楕円 (JP Patent Analysis Report)
The Technical Field "楕円" had 694 patent application filings in the most recent period (2022-01-01 to 2022-08-31). This is a significantly decreased of -264 filings (-27.6%) over 958 they had in the same period of the previous year (2021-01-01 to 2021-08-31). This report also includes technical terms related to " だ円 ", " 偏円 ", " 卵円 ", " 長円 " in the search set.
The highest number of filings in 2016 with 2,233 cases, and their lowest number in 2022 with 899 cases.
The mean of the number of filings over the last 5 years (2018 to 2023, 8,168 cases in total) is 1,361, and the median is 1,554. The coefficient of variation (standard deviation/mean) is 0.5, and there have been big fluctuations in the number of filings from year to year.
| Index | Value |
|---|---|
| Average | 1,361 patents |
| Std Dev | 671 |
| COV | 0.5 |
| Year | Cases | YOY |
|---|---|---|
| 2022 year | 899 cases | -37.7 % |
| 2021 year | 1,443 cases | -13.39 % |
| 2020 year | 1,666 cases | -9.65 % |
This report provides the latest patent analysis information (the IP landscape, including a patent map) on the patent search results of the JP patent database for 楕円 for the period of the last 10 years (2014-01-01 to 2024-04-30). You can compare the information in this report with the trends in your competitors’ patent filings and technologies, and use it to search for important patents.
This service provides, free of charge, a patent analysis report based on the latest patent data (Japanese, U.S., European, and PCT application publications) for use in patent searches, patent analysis, and IP landscaping. The service is offered by "Patent Integration" a firm specializing in patent search/patent analysis.
This report includes basic information to help you understand the IP strategy and management of 楕円, such as changes in the number of patents/patent applications they have filed, comparisons of the numbers of patents/patent applications filed by their peers and competitors, their top coapplicants (joint research partners, alliance partners), and their most important patents. It can be used in various intellectual property business operations such as IP landscaping, patent search/patent analysis, preparation of intellectual property business evaluation reports, selection of M&A candidates, and selection of alliance partners.
He is a patent attorney at a patent office. He specializes in invention counseling, patent filing, and intellectual property strategies for start-up companies and new businesses in the fields of software, information technology and artificial intelligence. He runs a patent course for beginners on Udemy, an online course provider.
After studying physics at the University of Tokyo as a doctoral student, he was engaged in intellectual property analysis and technology trend research as an in-house patent attorney at a precision equipment manufacturer and at Toyota Central R&D Labs. Inc..
Introduction
The concept of the "IP landscape" (IPL) has been attracting attention recently.
An IP landscape is not limited to patent information, but also integrates and analyzes business information (e.g., non-patent information such as papers, news releases, stock information, and market information). Intellectual-property-based business management is realized through the analysis of intellectual property information applied to the formulation of management strategies and business strategies. This is a comprehensive approach that includes but not limited to planning of open and closed strategies, selecting M&A candidates, searching for alliance partners, and formulating intellectual property strategies, through the exploitation of intellectual property information.
IP landscaping usually includes patent search and patent analysis. In patent search and patent analysis, it is important to grasp the market position of each company and the overall technological trends and development trends for each technology. More specifically, it is important to understand what intellectual property your own company and other companies hold, what the strengths and weaknesses of other companies are, and how other companies are trying to exploit their intellectual property. In other words, it is important to understand both the business strategy and the intellectual property strategy of each company.
After reading this search report, you may be interested in more detailed patent searches and patent analysis. We offer a service called Patent Integration, which is an integrated patent search and patent analysis service. With reasonable pricing and a simple user interface such that even beginners can quickly search for and analyze patent information by company or technology from a web browser, please consider using it for detailed patent searches, patent analysis, and IP landscaping.
Patent Integration has a patent-landscaping function that can visually represent a set of tens of thousands of patents/patent applications. This allows you to convincingly show the technical positions of your company and its competitors to your management and business strategists in order to formulate management strategies and business strategies.
楕円, Changes in the Number of JP Patents/Patent Applications
The changes in the number of patent filings of 楕円 over the last 20 years (JP) are shown below.
The change in the number of patents/patent applications is the most basic index in patent analysis. By examining the change in the number of patents/patent applications, you can see the status of technological development and R&D focus for each company or technology. It should be noted that since there is a one and a half year lag between the filing and the laying open of patent applications, it is not possible to analyze the situation more recently than one and half years prior to the present.
In this report, you can only see the change in the number of patents/patent applications by company or technology, whereas Patent Integration allows you to quickly compare the number of patent applications with your competitors in each technical field by cross-referencing with other keywords and patent classifications.
Search Set (Analysis Patents)
This patent analysis report was created for a patent search set of 16,944 cases retrieved by applying the following search formula and analysis period to the following patent database. Patent information such as a patent analysis result, a patent map, and a patent landscape can be freely used for patent searches, analysis, and work on intellectual property strategies, including IP landscaping.
楕円
Same industry / competition company information (JP)
The number of patents and changes in the number of patents of other companies (competitors) in the same industry as 楕円 are shown below.
Comparison of changes in the number of patents with peers and competitors is an important analytical index for understanding the intellectual property strategies of each company. By checking the transition of the number of patents for each company / competitor, you can check the status of focus on technology development and R&D for each company / technology.
It should be noted that patents have a time lag of one and a half years from filing to publication, so it is not possible to analyze the situation more recent than one and a half years.
If you want to find out more information, " Patent Integration , You can compare the number of patent applications with competitors in each technical field in a short time by multiplying with other keywords and patent classifications.Please use it for more detailed patent information analysis such as selection of M&A candidate destinations and alliance destinations.
Trends in filing of joint patent applications in the last 3 years (2022 to 2024).
Comparing the number of applications of each company, 三菱電機株式会社 has the highest number of joint applications in the last in the last 3 years (2022 to 2024) with 11 cases, followed by キヤノン株式会社 with 11 cases.
| Name | Cases |
|---|---|
| 三菱電機株式会社 | 11 cases |
| キヤノン株式会社 | 11 cases |
| トヨタ自動車株式会社 | 11 cases |
| セイコーエプソン株式会社 | 8 cases |
| 株式会社東芝 | 6 cases |
| シャープ株式会社 | 4 cases |
| 株式会社リコー | 3 cases |
| 株式会社日立製作所 | 2 cases |
| 日本電気株式会社 | 2 cases |
Trends in filing of joint patent applications for the target period (2014 to 2024).
Comparing the number of applications of each company, 三菱電機株式会社 has the highest number of joint applications in the last for the target period (2014 to 2024) with 268 cases, followed by キヤノン株式会社 with 252 cases.
| Name | Cases |
|---|---|
| 三菱電機株式会社 | 268 cases |
| キヤノン株式会社 | 252 cases |
| トヨタ自動車株式会社 | 108 cases |
| セイコーエプソン株式会社 | 96 cases |
| 株式会社東芝 | 80 cases |
| 株式会社日立製作所 | 61 cases |
| 株式会社リコー | 61 cases |
| シャープ株式会社 | 53 cases |
| ソニーグループ株式会社 | 43 cases |
| 日本電気株式会社 | 30 cases |
| パナソニックホールディングス株式会社 | 13 cases |
Same industry / competition company, Change in the Number of JP Patents
Below is a patent map showing changes in the number of applications for JP patents of 11 companies in the same industry over the past 20 years.
Top company information (JP)
The number of patents and changes in the number of patents of other companies (competitors) in the same industry as 楕円 are shown below.
Comparison of changes in the number of patents with peers and competitors is an important analytical index for understanding the intellectual property strategies of each company. By checking the transition of the number of patents for each company / competitor, you can check the status of focus on technology development and R&D for each company / technology.
It should be noted that patents have a time lag of one and a half years from filing to publication, so it is not possible to analyze the situation more recent than one and a half years.
If you want to find out more information, " Patent Integration , You can compare the number of patent applications with competitors in each technical field in a short time by multiplying with other keywords and patent classifications.Please use it for more detailed patent information analysis such as selection of M&A candidate destinations and alliance destinations.
Trends in filing of joint patent applications in the last 3 years (2022 to 2024).
Among the top coapplicants, 三菱電機株式会社 has the highest number of joint applications in the last in the last 3 years (2022 to 2024) with 11 cases, followed by キヤノン株式会社 with 11 cases.
Trends in filing of joint patent applications for the target period (2014 to 2024).
Among the top coapplicants, 三菱電機株式会社 has the highest number of joint applications in the last for the target period (2014 to 2024) with 268 cases, followed by キヤノン株式会社 with 252 cases.
| Name | Cases |
|---|---|
| 三菱電機株式会社 | 268 cases |
| キヤノン株式会社 | 252 cases |
| セイコーエプソン株式会社 | 96 cases |
| 株式会社東芝 | 80 cases |
| 株式会社日立製作所 | 61 cases |
| シャープ株式会社 | 53 cases |
| パナソニックホールディングス株式会社 | 13 cases |
Top company, Change in the Number of JP Patents
Below is a ranking of the number of JP patent applications by 楕円’s top 7 coapplicants over the last 20 years.
Below is a patent map showing the changes in the numbers of JP patent filings by 楕円’s top 7 coapplicants over the last 20 years.
Top company Details (JP)
Trends in filing of joint patent applications with パナソニックホールディングス株式会社
楕円 filed 13 joint applications with パナソニックホールディングス株式会社 for the analysis period (2014 to 2024).
The mean of the number of filings over the last 5 years (2018 to 2023, 5 cases in total) is 0.8, and the median is 0. The coefficient of variation (standard deviation/mean) is 1.8, and there have been very big fluctuations in the number of filings from year to year.
The highest number of filings in 2017 with 6 cases, and their lowest number in 2022 with 0 cases.
| Index | Value |
|---|---|
| Average | 0.8 patents |
| Std Dev | 1.5 |
| COV | 1.8 |
| Year | Cases | YOY |
|---|---|---|
| 2019 year | 4 cases | +300 % |
| 2018 year | 1 cases | -83.3 % |
| 2017 year | 6 cases | +500 % |
Trends in filing of joint patent applications with 株式会社日立製作所
楕円 filed 61 joint applications with 株式会社日立製作所 for the analysis period (2014 to 2024).
The mean of the number of filings over the last 5 years (2018 to 2023, 25 cases in total) is 4.2, and the median is 3.0. The coefficient of variation (standard deviation/mean) is 0.8, and there have been relatively large fluctuations in the number of filings from year to year.
The number of filings has been decreasing for the last 3 years (2020 to 2023). The highest number of filings in 2016 with 11 cases, and their lowest number in 2022 with 2 cases.
| Index | Value |
|---|---|
| Average | 4.2 patents |
| Std Dev | 3.3 |
| COV | 0.8 |
| Year | Cases | YOY |
|---|---|---|
| 2022 year | 2 cases | -33.3 % |
| 2021 year | 3 cases | 0 |
| 2020 year | 3 cases | -57.1 % |
Trends in filing of joint patent applications with 三菱電機株式会社
楕円 filed 268 joint applications with 三菱電機株式会社 for the analysis period (2014 to 2024).
The mean of the number of filings over the last 5 years (2018 to 2023, 152 cases in total) is 25.3, and the median is 33.0. The coefficient of variation (standard deviation/mean) is 0.6, and there have been big fluctuations in the number of filings from year to year.
The number of filings has been decreasing for the last 3 years (2020 to 2023). The highest number of filings in 2016 with 40 cases, and their lowest number in 2022 with 10 cases.
| Index | Value |
|---|---|
| Average | 25.3 patents |
| Std Dev | 14.4 |
| COV | 0.6 |
| Year | Cases | YOY |
|---|---|---|
| 2022 year | 10 cases | -74.4 % |
| 2021 year | 39 cases | +21.88 % |
| 2020 year | 32 cases | -5.88 % |
Trends in filing of joint patent applications with キヤノン株式会社
楕円 filed 252 joint applications with キヤノン株式会社 for the analysis period (2014 to 2024).
The mean of the number of filings over the last 5 years (2018 to 2023, 97 cases in total) is 16.2, and the median is 17.5. The coefficient of variation (standard deviation/mean) is 0.6, and there have been big fluctuations in the number of filings from year to year.
The number of filings has been decreasing for the last 3 years (2020 to 2023). The highest number of filings in 2014 with 48 cases, and their lowest number in 2022 with 9 cases.
| Index | Value |
|---|---|
| Average | 16.2 patents |
| Std Dev | 9.0 |
| COV | 0.6 |
| Year | Cases | YOY |
|---|---|---|
| 2022 year | 9 cases | -55.0 % |
| 2021 year | 20 cases | +17.65 % |
| 2020 year | 17 cases | -45.2 % |
Trends in filing of joint patent applications with 株式会社東芝
楕円 filed 80 joint applications with 株式会社東芝 for the analysis period (2014 to 2024).
The mean of the number of filings over the last 5 years (2018 to 2023, 30 cases in total) is 5.0, and the median is 6.0. The coefficient of variation (standard deviation/mean) is 0.5, and there have been big fluctuations in the number of filings from year to year.
The number of filings has been decreasing for the last 3 years (2020 to 2023). The highest number of filings in 2014 with 16 cases, and their lowest number in 2021 with 4 cases.
| Index | Value |
|---|---|
| Average | 5.0 patents |
| Std Dev | 2.5 |
| COV | 0.5 |
| Year | Cases | YOY |
|---|---|---|
| 2022 year | 6 cases | +50.0 % |
| 2021 year | 4 cases | -33.3 % |
| 2020 year | 6 cases | -25.00 % |
Information on important patents (JP)
The following shows JP patents held by 楕円 that have had an invalidation trial against them demanded or an opposition filed against them by a third party, and 楕円’s JP patents/patent applications of high importance cited by Examiners in patent examination processes.
By noting the most important patents, you can obtain knowledge of the competitive business environment in which 楕円 is placed (e.g., whether it is a fiercely competitive environment or an oligopolistic market and the like). In general, it can be understood that a company with a large number of demands for invalidation trials is developing their business in a business environment where IP disputes are common.
If you want to search for more detailed information, you can use Patent Integration to retrieve and download by company cited patents/patent applications or patents undergoing invalidation trials. You can quickly extract important patents from a patent set that includes multiple competitors by cross-referencing with other keywords and patent classifications. Please consider using it for searches for important patents/patent applications.
Glossary
- Cited
- Indicates that the patent/patent application has been cited (by Examiners) in notices of reasons for rejection in the examination process of other (Japanese, U.S., or European) patent applications. The higher the number of citations, the more important the patent/patent application is considered to be.
- Request for invalidation trial
- Indicates that a third party has requested a procedure to invalidate the patent. It is likely to affect the business of third parties and is considered to be of high importance.
- Opposition
- Indicates that a third party has filed a petition with the Patent Office to hear the validity of the patent again. Like the trial for invalidation, it is considered to be of high importance.
- Information provision
- Indicates that a third party has provided the Patent Office with useful information for examination for the patent filed. It is usually considered to be of high importance because it is done to prevent the patent from being granted.
- Browsing request
- Indicates that a third party has requested the Patent Office to view the patent bag (a set of documents exchanged between the Patent Office and the applicant). The bag is often checked prior to trial for invalidation, opposition, and provision of information, and is considered to be a highly important patent.
Invalidationed Trial cases
List of latest Invalidationed Trial patents
In the last 3 years (2021-05-01 ~ 2024-04-30), there were 1 patents Invalidation Trial from third parties. The average number of Invalidation Trial is 1.0 times. The most recently Invalidation Trial patent is 特許5628179 "回転式噴霧装置、及び該回転式噴霧装置を使用することによって被覆製品を噴霧する方法" (Invalidation Trial day 2022-06-27) .
| - | No. | Title | Invalidation Trial days |
|---|---|---|---|
| 1 | 特許5628179 | 回転式噴霧装置、及び該回転式噴霧装置を使用することによって被覆製品を噴霧する方法 | 2022-06-27 |
Oppositioned cases
List of latest Oppositioned patents
In the last 3 years (2021-05-01 ~ 2024-04-30), there were 19 patents Opposition from third parties. The average number of Opposition is 1.0 times. The most recently Opposition patent is 特許7312448 "目視支援装置" (Opposition day 2023-12-26) , next is 特許7287980 "バネ表面の植毛加工方法" (Opposition day 2023-12-05) .
| - | No. | Title | Opposition days |
|---|---|---|---|
| 1 | 特許7312448 | 目視支援装置 | 2023-12-26 |
| 2 | 特許7287980 | バネ表面の植毛加工方法 | 2023-12-05 |
| 3 | 特許7278336 | 電子インタフェースを備えた電子カード | 2023-11-17 |
| 4 | 特許7269125 | 取り付け構造、表示装置、及び、照明装置 | 2023-11-08 |
| 5 | 特許7206762 | 電極及びその製造方法、電極素子、非水電解液蓄電素子 | 2023-07-12 |
| 6 | 特許7183641 | 立体造形用粒子、立体造形用粉末、立体造形物の製造装置、立体造形物の製造方法、立体造形用粉末の製造方法、及び粒子 | 2023-06-05 |
| 7 | 特許7164791 | 波動歯車減速機用モータユニット | 2023-04-18 |
| 8 | 特許7146335 | ベンティング装置 | 2023-04-04 |
| 9 | 特許7127611 | 青果物鮮度保持包装袋の製造方法 | 2023-02-27 |
| 10 | 特許7121818 | プログラム、画像処理装置及び画像処理方法 | 2023-02-16 |
Protested cases
List of latest Protested patents
In the last 3 years (2021-05-01 ~ 2024-04-30), there were 52 patents Protest from third parties. The average number of Protest is 1.5 times. The most recently Protest patent is 特開2022-156553 "中空構造体" (Protest day 2024-04-17) , next is 特開2021-023453 "クッション材" (Protest day 2024-04-09) .
| - | No. | Title | Protest days |
|---|---|---|---|
| 1 | 特開2022-156553 | 中空構造体 | 2024-04-17 |
| 2 | 特開2021-023453 | クッション材 | 2024-04-09 |
| 3 | 特表2022-517067 | 非円形瞳を有する検査システム | 2024-04-08 |
| 4 | 特表2023-551226 | 二次電池 | 2024-03-22 |
| 5 | 特開2022-057910 | タイヤ | 2024-03-01 |
| 6 | 特許7463702 | 光源ユニットおよび照明器具 | 2024-03-01 |
| 7 | 特開2022-153659 | プログラム、画像処理装置及び画像処理方法 | 2024-01-31 |
| 8 | 特許7416107 | ＲＨ真空脱ガス槽の下部槽構造及びＲＨ真空脱ガス設備 | 2024-01-24 |
| 9 | 特開2022-075799 | ＰＴＰ包装体 | 2024-01-15 |
| 10 | 特表2023-535776 | 二次電池 | 2024-01-12 |
| 11 | 特開2023-009748 | 摩擦係数安定剤排出機能を備えた締結部材 | 2023-12-22 |
| 12 | 特開2023-022391 | 摩擦係数安定剤排出機能を備えた締結部材 | 2023-12-22 |
| 13 | 特開2023-123428 | バネ表面の植毛加工方法 | 2023-11-21 |
| 14 | 特開2021-162323 | 疾患鑑別支援方法、疾患鑑別支援装置、及び疾患鑑別支援コンピュータプログラム | 2023-09-01 |
| 15 | 特表2018-514359 | 上腕骨用釘 | 2023-07-25 |
| 16 | 特開2021-095179 | 包装用容器 | 2023-07-10 |
| 17 | 特開2021-158014 | 電池ケースの製造方法 | 2023-06-19 |
| 18 | 特開2022-169501 | 台座付きアクリルスタンド | 2023-04-13 |
| 19 | 特許7480054 | アイラッシュカーラー | 2023-04-08 |
| 20 | 特許7429707 | 弁消音器及びその電子膨張弁 | 2023-02-01 |
Top Patents/Patent Applications with the Highest Number of Protested
Of the patent applications filed in the last 10 years (2014-05-01 to 2024-04-30), 144 patents/patent applications were protest more than once in the examination process of other patent applications. The mean of the number of protest is 1.4. The most protest patent is 特表2018-514359 "上腕骨用釘" (7 times) , and the next most protest patent is 特許6420119 "染色又は脱色キット" (6 times) .
| - | No. | Title | |
|---|---|---|---|
| 1 | 特表2018-514359 | 上腕骨用釘 | 7 times |
| 2 | 特許6420119 | 染色又は脱色キット | 6 times |
| 3 | 特開2017-178352 | ＰＴＰ包装体 | 6 times |
| 4 | 特開2022-075799 | ＰＴＰ包装体 | 5 times |
| 5 | 特許6651455 | 造粒機の運転条件の評価装置、評価方法、およびプログラム | 4 times |
Inspectioned cases
List of latest Inspectioned patents
In the last 3 years (2021-05-01 ~ 2024-04-30), there were 114 patents Inspection from third parties. The average number of Inspection is 1.6 times. The most recently Inspection patent is 特開2021-023453 "クッション材" (Inspection day 2024-04-17) , next is 特表2023-551226 "二次電池" (Inspection day 2024-04-15) .
| - | No. | Title | Inspection days |
|---|---|---|---|
| 1 | 特開2021-023453 | クッション材 | 2024-04-17 |
| 2 | 特表2023-551226 | 二次電池 | 2024-04-15 |
| 3 | 特表2022-513795 | ポリアミドブロック及びポリエーテルブロックを有するコポリマー粉末 | 2024-04-09 |
| 4 | 特許7466515 | 自動化試料堆積および染色システムならびに関連方法 | 2024-03-27 |
| 5 | 特許7463702 | 光源ユニットおよび照明器具 | 2024-03-26 |
| 6 | 特開2022-057910 | タイヤ | 2024-03-11 |
| 7 | 特開2022-153659 | プログラム、画像処理装置及び画像処理方法 | 2024-02-19 |
| 8 | 特許7338944 | 弁当箱用ボード及びこれを備えた弁当箱 | 2024-02-15 |
| 9 | 特開2021-168405 | 太陽電池及びそれを含む太陽電池パネル | 2024-02-08 |
| 10 | 特表2023-535776 | 二次電池 | 2024-02-07 |
| 11 | 特開2022-075799 | ＰＴＰ包装体 | 2024-02-06 |
| 12 | 特許6874818 | 液晶装置および電子機器 | 2024-02-06 |
| 13 | 特開2023-009748 | 摩擦係数安定剤排出機能を備えた締結部材 | 2024-01-09 |
| 14 | 特開2023-022391 | 摩擦係数安定剤排出機能を備えた締結部材 | 2024-01-09 |
| 15 | 特開2022-136689 | 卓上カレンダー | 2023-12-29 |
| 16 | 特許7406903 | 爪やすり | 2023-12-26 |
| 17 | 特開2023-123428 | バネ表面の植毛加工方法 | 2023-12-18 |
| 18 | 特開2021-185124 | 防塵および建築材製造のための組成物および方法 | 2023-10-31 |
| 19 | 特表2020-531157 | 負圧を誘発し、腎臓灌流を増加させる、尿管および膀胱カテーテルおよび方法 | 2023-10-31 |
| 20 | 特開2021-162323 | 疾患鑑別支援方法、疾患鑑別支援装置、及び疾患鑑別支援コンピュータプログラム | 2023-09-28 |
Top Patents/Patent Applications with the Highest Number of Inspectioned
Of the patent applications filed in the last 10 years (2014-05-01 to 2024-04-30), 297 patents/patent applications were inspection more than once in the examination process of other patent applications. The mean of the number of inspection is 1.4. The most inspection patent is 特開2017-178352 "ＰＴＰ包装体" (11 times) , and the next most inspection patent is 特許6420119 "染色又は脱色キット" (8 times) .
| - | No. | Title | |
|---|---|---|---|
| 1 | 特開2017-178352 | ＰＴＰ包装体 | 11 times |
| 2 | 特許6420119 | 染色又は脱色キット | 8 times |
| 3 | 特表2018-514359 | 上腕骨用釘 | 8 times |
| 4 | 特許6198711 | 鼻用アセンブリ | 7 times |
| 5 | 特許6477720 | 繊維強化プラスチック及びその製造方法 | 6 times |
Cited cases
Top Patents/Patent Applications with the Highest Number of Cited
Of the patent applications filed in the last 10 years (2014-05-01 to 2024-04-30), 3,453 patents/patent applications were cited more than once in the examination process of other patent applications. The mean of the number of cited is 2.5. The most cited patent is 特許6089081 "磁気メモリ" (90 times) , and the next most cited patent is 特許6680793 "導波路回折格子デバイス" (70 times) .
| - | No. | Title | |
|---|---|---|---|
| 1 | 特許6089081 | 磁気メモリ | 90 times |
| 2 | 特許6680793 | 導波路回折格子デバイス | 70 times |
| 3 | 特許6727245 | レーザ血栓溶解装置 | 66 times |
| 4 | 特表2017-500605 | 仮想現実および拡張現実のシステムおよび方法 | 41 times |
| 5 | 特許6233442 | 光源ユニット、光源装置、及び画像表示装置 | 35 times |
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