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Seiko Electronic Components Ltd.

USPTO Granted Patents = 26

Forward Citations = 669

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47 inventors (with patents filed for the assignee):

Kensuke Tahara (6 out of 13 patents)

Tsugio Sakai (6 out of 22 patents)

Hirofumi Kawashima (6 out of 7 patents)

4. Toyoo Harada (5 out of 10 patents)

5. Hideki Ishikawa (4 out of 5 patents)

6. Fumiharu Iwasaki (3 out of 27 patents)

7. Akifumi Sakata (3 out of 8 patents)

8. Yoshitomo Masuda (3 out of 30 patents)

9. Takahiro Kawagoe (3 out of 42 patents)

10. Fujio Tamura (3 out of 3 patents)

11. Masao Ogawa (3 out of 16 patents)

12. Isamu Shinoda (3 out of 4 patents)

13. Seiji Yahagi (3 out of 4 patents)

14. Shinichi Toyosawa (2 out of 28 patents)

15. Hideharu Daifuku (2 out of 14 patents)

Core Competencies:

Non-Aqueous Electrolyte Battery

Quartz Resonator

Frequency Adjustment

Electrochemical Cell

Temperature Compensation

Sintered Bodies

Electric Cells

Polishing Machine

Vacuum Gauge

Organic Electrolyte Cell

Oscillator Circuit

Production Method

26 patents: Sort by Forward Citations

1. 5556721 - Non-aqueous electrolyte secondary battery and production method of the (1996-09-17),

2. 5516328 - End surface polishing machine (1996-05-14),

3. 5506075 - Non-aqueous electrolyte secondary battery and method of producing the (1996-04-09),

4. 5478670 - Non-aqueous electrolyte electrochemical cell comprising high Ni (1995-12-26),

5. 5469010 - Method of adjusting frequency of NS-GT cut quartz resonator (1995-11-21),

6. 5401599 - Non-aqueous electrolyte secondary battery and method of producing the (1995-03-28),

7. 5395711 - Non-aqueous electrolyte secondary battery and its production method (1995-03-07),

8. 5334900 - Torsional quartz crystal resonator (1994-08-02),

9. 5311096 - KT cut width-extensional mode quartz crystal resonator (1994-05-10),

10. 5286582 - Monaqueous electrolyte secondary battery and process for producing (1994-02-15),

11. 5280236 - IC test instrument (1994-01-18),

12. 5218260 - Longitudinal quartz crystal resonator (1993-06-08),

13. 5107164 - Length-extentional quartz resonator (1992-04-21),

14. 5059388 - Process for manufacturing sintered bodies (1991-10-22),

15. 5033306 - Quartz vacuum gauge (1991-07-23),

Company Overview

Seiko Electronic Components Ltd. specializes in the development and manufacturing of high-precision electronic components, including quartz crystals and oscillators. The company focuses on delivering innovative solutions that cater to various industries such as telecommunications, automotive, and consumer electronics. With a commitment to quality and technological advancement, Seiko Electronic Components plays a significant role in enhancing the performance and reliability of electronic devices globally.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

26 Patents

#25 in

#2,507 in Japan

#24,806 in the World

Seiko Electronic Components Ltd.

Forward Citations = 669

47 inventors:

Kensuke Tahara (6 out of 13 patents)

Tsugio Sakai (6 out of 22 patents)

Hirofumi Kawashima (6 out of 7 patents)

4. Toyoo Harada (5 out of 10 patents)

5. Hideki Ishikawa (4 out of 5 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Seiko Electronic Components Ltd.. Retrieved from https://idiyas.com/company/seiko-electronic-components

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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