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Seiko Npc Corporation

USPTO Granted Patents = 14

% Expired Patents = 21.4

EPO Patents = 3

Trademarks = 1

Forward Citations = 44

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24 inventors (with patents filed for the assignee):

Masayuki Takahashi (5 out of 12 patents)

Masahiro Oshio (3 out of 26 patents)

Takayuki Kikuchi (3 out of 74 patents)

4. Yoshinao Yanagisawa (3 out of 10 patents)

5. Toshihiro Nishida (3 out of 3 patents)

6. Yoshihiro Kobayashi (1 out of 73 patents)

7. Masayuki Takahashi (1 out of 54 patents)

8. Shinichi Watanabe (1 out of 53 patents)

9. Shigeki Sakai (1 out of 21 patents)

10. Kenji Sato (1 out of 16 patents)

11. Shoji Yokoi (1 out of 9 patents)

12. Yasuhiro Komiya (1 out of 74 patents)

13. Hideto Naruse (1 out of 5 patents)

14. Yutaka Takada (1 out of 20 patents)

15. Shinnosuke Kano (1 out of 1 patent)

14 patents: Sort by Forward Citations

1. 12635582 - Optical device and method of manufacturing optical device (2026-05-19),

2. 9046366 - Signal processing circuit, physical quantity detection apparatus, angular velocity detection apparatus, integrated circuit device, and electronic instrument (2015-06-02),

3. 8850887 - Detection circuit, physical quantity detection apparatus, angular velocity detection apparatus, integrated circuit device, and electronic instrument (2014-10-07),

4. 8618890 - Angular velocity detection apparatus (2013-12-31),

5. 8375790 - Physical quantity detection apparatus, method of controlling physical quantity detection apparatus, abnormality diagnosis system, and abnormality diagnosis method (2013-02-19),

6. 8141425 - Angular rate detection apparatus providing stable output (2012-03-27),

7. 7667252 - Semiconductor nonvolatile storage element and method of fabricating the same (2010-02-23),

8. 7441458 - Systems for measuring physical quantities (2008-10-28),

9. 7397883 - Spread spectrum type clock generation circuit for improving frequency modulation efficiency (2008-07-08),

10. 7271619 - Charge pump circuit reducing noise and charge error and PLL circuit using the same (2007-09-18),

11. 7176432 - Image detection processor and image detection processing method (2007-02-13),

12. 7161419 - Sensor device and a signal amplification device of a small detection signal provided by the sensor (2007-01-09),

13. 7129776 - Bias voltage generator circuit (2006-10-31),

14. 7091797 - MOS-type variable capacitance element and voltage control oscillation circuit (2006-08-15),

SEIKO NPC CORPORATION is a leading global manufacturer of precision optical products, including lenses, prisms, filters, and optical coatings. With over 50 years of experience in the industry, SEIKO NPC CORPORATION is renowned for its high-quality and innovative optical solutions. Our products are used in various industries such as automotive, aerospace, medical, telecommunications, and consumer electronics. We are committed to delivering superior optical performance and customer satisfaction through continuous research and development.

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Company Badge

USPTO Data Jan 1 1976 - Sep 22 2026

14 Patents

#67 in

#3,572 in Japan

#42,135 in the World

Seiko Npc Corporation

Forward Citations = 44

24 inventors:

Masayuki Takahashi (5 out of 12 patents)

Masahiro Oshio (3 out of 26 patents)

Takayuki Kikuchi (3 out of 74 patents)

4. Yoshinao Yanagisawa (3 out of 10 patents)

5. Toshihiro Nishida (3 out of 3 patents)

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