% Expired Patents = 83.3

Forward Citations = 18

Loading Chart...

14 inventors (with patents filed for the assignee):

Homu Takayama (4 out of 18 patents)

Masayuki Ueno (3 out of 14 patents)

Kenji Kaneko (3 out of 24 patents)

4. Shinichi Suzuki (2 out of 40 patents)

5. Takanori Yachi (2 out of 5 patents)

6. Tadahisa Hoshino (2 out of 3 patents)

7. Go Watanabe (1 out of 21 patents)

8. Eijiroh Tada (1 out of 16 patents)

9. Shunichiro Wakamiya (1 out of 6 patents)

10. Tatsuo Gotoh (1 out of 6 patents)

11. Yoichi Kojima (1 out of 25 patents)

12. Masakazu Yamagata (1 out of 4 patents)

13. Sachiko Nasu (1 out of 1 patent)

14. Masahiro Sakurai (1 out of 1 patent)

6 patents: Sort by Forward Citations

1. 6796042 - Survey point indicating instrument (2004-09-28),

2. 6734410 - Surveying instrument having an optical distance meter and an autofocus system, and a surveying instrument having a detachable autofocus system (2004-05-11),

3. 6701093 - Integral transmitter-receiver optical communication apparatus and a crosstalk preventive device therefor (2004-03-02),

4. 6683730 - Variable-focus lens system (2004-01-27),

5. 6624402 - Surveying instrument, surveying instrument having AF function, surveying instrument having PF mechanism, and surveying instrument having multiple-focus function (2003-09-23),

6. 6542225 - Surveying machine automatically adjusting optical axis (2003-04-01),

Company Overview

Pentax Precision Co., Ltd. is a leading manufacturer of high-precision components for a wide range of industries including automotive, aerospace, and medical. With state-of-the-art technology and a commitment to excellence, we provide innovative solutions to meet our customers' needs.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

6 Patents

#2,469 in Tokyo

#5,989 in Japan

Tokyo, Japan

Pentax Precision Co., Ltd.

Forward Citations = 18

14 inventors:

Homu Takayama (4 out of 18 patents)

Masayuki Ueno (3 out of 14 patents)

Kenji Kaneko (3 out of 24 patents)

4. Shinichi Suzuki (2 out of 40 patents)

5. Takanori Yachi (2 out of 5 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Pentax Precision Co., Ltd.. Retrieved from https://idiyas.com/company/pentax-precision-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]