Shin-Etsu Quartz Products Ltd.

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USPTO Granted Patents = 5

% Expired Patents = 20.0

Forward Citations = 15

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16 inventors (with patents filed for the assignee):

Tetsuji Ueda (2 out of 10 patents)

Martin Trommer (1 out of 27 patents)

Stefan Ochs (1 out of 14 patents)

4. Yuji Baba (1 out of 4 patents)

5. Yuya Yokosawa (1 out of 4 patents)

6. Hiroyuki Nishimura (1 out of 20 patents)

7. Akira Fujinoki (1 out of 35 patents)

8. Kyoichi Inaki (1 out of 17 patents)

9. Itsuo Araki (1 out of 3 patents)

10. Hiroshi Kimura (1 out of 1 patent)

11. Kazuo Asajima (1 out of 1 patent)

12. Tooru Ikeda (1 out of 1 patent)

13. Hiroyuki Watanabe (1 out of 13 patents)

14. Kotaro Sumi (1 out of 1 patent)

15. Hikari Kuwahara (1 out of 1 patent)

5 patents: Sort by Forward Citations

1. 12742254 - Method for evaluating quartz glass crucible, method for manufacturing the same, and quartz glass crucible (2026-09-22),

2. 12692184 - Large-sized hollow porous quartz glass preform and method of manufacturing the same (2026-07-28),

3. 7645526 - Member for plasma etching device and method for manufacture thereof (2010-01-12),

4. 7007510 - Method of producing an optical member (2006-03-07),

5. 5762672 - Method for producing a quartz glass crucible (1998-06-09),

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USPTO Data Jan 1 1976 - Oct 27 2026

5 Patents

#2,722 in Tokyo

#6,656 in Japan

Tokyo, Japan