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For the Inventor, By the Inventor

Saitama, Japan

Kamakura Koki Co., Ltd.

Calculating rank
USPTO Granted Patents = 13

% Expired Patents = 15.4


Trademarks = 1

Forward Citations = 26

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9 inventors (with patents filed for the assignee):

goldMedal Naomi Watanabe (6 out of 7 patents)

silverMedal Kazuya Miyaji (6 out of 6 patents)

bronzeMedal Kunio Ando (4 out of 5 patents)

4.  Masashi Kato (4 out of 11 patents)

5.  Haruo Itoh (4 out of 5 patents)

6.  Toshiya Kamakura (1 out of 1 patent)

7.  Kazuki Shiraishi (1 out of 1 patent)

8.  Hiroaki Ishigaki (1 out of 1 patent)

9.  Akihiro Shimofuruta (1 out of 1 patent)

10.  Haruo Ito (0 patent)

11.  Noami Watanabe (0 patent)


13 patents:

1. 11536982 - Anti-vibration optical device (2022-12-27),
2. 10852525 - Binocular system (2020-12-01),
3. 10375322 - Optical observation device (2019-08-06),
4. 9529208 - Image stabilizer (2016-12-27),
5. 9417458 - Image stabilizing device and system for telescopic optical instruments (2016-08-16),
6. 9395551 - Optical image stabilizer (2016-07-19),
7. 8379306 - Magnification-varying optical device (2013-02-19),
8. 7372637 - Focusing unit and optical device (2008-05-13),
9. 7251073 - Pair of binoculars (2007-07-31),
10. 7006285 - Range binoculars (2006-02-28),
11. 6903811 - Rangefinder binoculars (2005-06-07),
12. 6870669 - Variable-powered binoculars (2005-03-22),
13. 5028123 - Focal-length adjusting assembly for binoculars (1991-07-02),
Company Overview
Kamakura Koki Co., Ltd. is a Japanese company based in Saitama, specializing in the development and manufacturing of precision machinery and equipment. The organization focuses on advanced technologies in the fields of industrial automation and control systems, providing innovative solutions that enhance operational efficiency. With a commitment to quality and precision, Kamakura Koki serves various sectors, contributing to the evolution of manufacturing processes and supporting the growth of the industrial landscape in Japan and beyond.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

13 Patents

#69 in Saitama 343-0827

#3,754 in Japan

#45,104 in the World

Saitama, JP
Saitama, Japan

Kamakura Koki Co., Ltd.

Forward Citations = 26

9 inventors:

goldMedal Naomi Watanabe (6 out of 7 patents)

silverMedal Kazuya Miyaji (6 out of 6 patents)

bronzeMedal Kunio Ando (4 out of 5 patents)

4.  Masashi Kato (4 out of 11 patents)

5.  Haruo Itoh (4 out of 5 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Kamakura Koki Co., Ltd.. Retrieved from https://idiyas.com/company/kamakura-koki-company

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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