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For the Inventor, By the Inventor

Tokyo, Japan

Photoscience Japan Corporation


USPTO Granted Patents = 14

% Expired Patents = 7.1


Forward Citations = 64

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12 inventors (with patents filed for the assignee):

goldMedal Yuji Yamakoshi (5 out of 5 patents)

silverMedal Eiichi Ishiyama (3 out of 3 patents)

bronzeMedal Koji Nakano (2 out of 2 patents)

4.  Masahiro Kadoya (2 out of 2 patents)

5.  Mitsuhiro Matsuda (1 out of 4 patents)

6.  Arata Ishii (1 out of 1 patent)

7.  Hiroshi Ohara (1 out of 1 patent)

8.  Noboru Akiyama (1 out of 1 patent)

9.  Bill Sotirakos (1 out of 2 patents)

10.  Demao Wang (1 out of 2 patents)

11.  Akihiro Inoue (1 out of 10 patents)

12.  Tomoyoshi Nakamura (1 out of 1 patent)

13.  Koji c/o Photoscience Japan Corporation Nakano (0 patent)


14 patents:

1. 11814304 - Ultraviolet treatment method and system (2023-11-14),
2. 11437228 - Mercury discharge lamp (2022-09-06),
3. 11325848 - Ultraviolet irradiation device and method (2022-05-10),
4. 10939515 - Discharge lamp and discharge lamp apparatus (2021-03-02),
5. 10834846 - Ultraviolet ray treatment apparatus (2020-11-10),
6. 10040700 - Ultraviolet treatment apparatus and light-shielding component therefor (2018-08-07),
7. RE39522 - Ultraviolet ray irradiation equipment having scraper rings fitted to light transmission tubes (2007-03-19),
8. 6683411 - Discharge lamp, ultraviolet ray irradiation apparatus and method of using the apparatus (2004-01-27),
9. 6538378 - Low-pressure mercury vapor discharge lamp and ultraviolet-ray irradiating apparatus and method using the same (2003-03-25),
10. 6432213 - Tube scraper (2002-08-13),
11. 6013917 - UV ray irradiation apparatus having scraper rings fitted to light (2000-01-11),
12. 5937266 - Light irradiating device employing light irradiating modules equipped (1999-08-10),
13. 5874740 - Ultraviolet ray irradiation equipment having scraper rings fitted to (1999-02-23),
14. 5792433 - Light irradiating device with easily replaceable light irradiating lamps (1998-08-11),
Company Overview
Photoscience Japan Corporation is a prominent player in the field of advanced imaging technologies, specializing in the development and manufacturing of high-performance optical systems and components. The company focuses on innovative solutions for various applications, including industrial inspection, medical imaging, and scientific research. With a strong emphasis on research and development, Photoscience aims to enhance imaging capabilities through cutting-edge technology, catering to both domestic and international markets from its headquarters in Tokyo.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 13 2026

14 Patents

#1,597 in Tokyo

#3,580 in Japan

#42,249 in the World

Tokyo, JP
Tokyo, Japan

Photoscience Japan Corporation

Forward Citations = 64

12 inventors:

goldMedal Yuji Yamakoshi (5 out of 5 patents)

silverMedal Eiichi Ishiyama (3 out of 3 patents)

bronzeMedal Koji Nakano (2 out of 2 patents)

4.  Masahiro Kadoya (2 out of 2 patents)

5.  Mitsuhiro Matsuda (1 out of 4 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Photoscience Japan Corporation. Retrieved from https://idiyas.com/company/photoscience-japan

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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