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Yamaichi Electronics Co., Ltd.

USPTO Granted Patents = 340

% Expired Patents = 20.9

EPO Patents = 18

Trademarks = 10

Forward Citations = 2,995

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157 inventors (with patents filed for the assignee):

Toshiyasu Ito (82 out of 90 patents)

Noriyuki Matsuoka (42 out of 92 patents)

Yosuke Takai (31 out of 31 patents)

4. Shigeru Sato (22 out of 39 patents)

5. Takeyuki Suzuki (20 out of 36 patents)

6. Katsumi Suzuki (18 out of 62 patents)

7. Masaaki Ooya (17 out of 19 patents)

8. Kazumi Uratsuji (16 out of 38 patents)

9. Yuji Nakamura (15 out of 65 patents)

10. Shunji Abe (12 out of 34 patents)

11. Hiroshi Takahira (11 out of 11 patents)

12. Masaaki Saito (10 out of 31 patents)

13. Yoshiharu Ishii (10 out of 10 patents)

14. Takahiro Shimoyama (10 out of 20 patents)

15. Ryo Ujike (10 out of 10 patents)

Core Competencies:

High-Frequency Signal

Transmission Device

Plug Connector

Receptacle Assembly

Inspection Socket

Transceiver Module

Mezzanine Connector

Cable Assembly

IC Socket

Contact Probe

Electrical Connector

Flexible Circuit Board

340 patents: Sort by Forward Citations

1. D1148695 - Connector frame (2026-09-22),

2. 12676433 - Connector with shielding plates to block noise between adjacent channels (2026-07-07),

3. 12674946 - Cage and cage assembly (2026-07-07),

4. 12665368 - Plug connector, housing for plug connector, and manufacturing method of housing for plug connector (2026-06-23),

5. 12665352 - Electrical connector for high-speed transmission (2026-06-23),

6. 12652751 - Receptacle assembly and circuit board (2026-06-09),

7. 12614883 - Connector (2026-04-28),

8. D1119810 - Connector for an optical module (2026-03-24),

9. D1114741 - Connector for an optical module (2026-02-24),

10. 12537335 - Connector (2026-01-27),

11. 12512613 - High-frequency signal transmission device and electrical connection method for wiring board and connector (2025-12-30),

12. 12500378 - Plug connector and receptacle connector, and method of extracting plug connector (2025-12-16),

13. D1103123 - Receptacle cage (2025-11-25),

14. 12477653 - High-frequency signal transmission device and high-frequency signal transmission cable (2025-11-18),

15. 12461124 - Contact pin and socket for inspection (2025-11-04),

Company Overview

Yamaichi Electronics Co., Ltd., headquartered in Tokyo, specializes in the development and manufacturing of high-speed connectors. The company focuses on advanced technologies related to high-frequency signal transmission, offering a diverse range of products including plug connectors, receptacle assemblies, inspection sockets, transceiver modules, mezzanine connectors, and cable assemblies. Yamaichi's expertise positions it as a key player in industries requiring reliable and efficient connectivity solutions.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

340 Patents

#250 in Tokyo

#493 in Japan

#2,670 in the World

Yamaichi Electronics Co., Ltd.

Forward Citations = 2,995

157 inventors:

Toshiyasu Ito (82 out of 90 patents)

Noriyuki Matsuoka (42 out of 92 patents)

Yosuke Takai (31 out of 31 patents)

4. Shigeru Sato (22 out of 39 patents)

5. Takeyuki Suzuki (20 out of 36 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Yamaichi Electronics Co., Ltd.. Retrieved from https://idiyas.com/company/yamaichi-electronics-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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