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Silver Seiko Ltd.

USPTO Granted Patents = 54

Forward Citations = 369

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52 inventors (with patents filed for the assignee):

Kenji Tamada (13 out of 13 patents)

Taro Kasagi (7 out of 7 patents)

Mitsuhito Koike (5 out of 5 patents)

4. Shigeo Kamikura (5 out of 7 patents)

5. Yoshimitsu Nagashima (4 out of 4 patents)

6. Hideo Aoki (4 out of 4 patents)

7. Masayuki Mutoh (3 out of 11 patents)

8. Junzo Ueki (3 out of 3 patents)

9. Kazuaki Takahashi (2 out of 74 patents)

10. Yoshiaki Nakajima (2 out of 13 patents)

11. Toshiyuki Suzuki (2 out of 2 patents)

12. Nobuaki Yokoyama (2 out of 2 patents)

13. Yasuhiro Iwasaki (2 out of 2 patents)

14. Yutaka Kagaya (2 out of 4 patents)

15. Kensuke Uemura (2 out of 2 patents)

Core Competencies:

Ink Jet Recording

Typewriter Mechanisms

Knitting Machines

Copying Systems

Automated Printers

Step Motor Control

Envelope Sealing

Print Ribbon

Paper Feeding

Impression Control

Yarn Changing

Fabric Manipulation

54 patents: Sort by Forward Citations

1. 6256105 - Copy system and copy controller (2001-07-03),

2. 6247800 - Ink jet recording apparatus with ink drop registration control (2001-06-19),

3. 5940101 - Method and apparatus for determining optimum ink drop (1999-08-17),

4. 5583552 - Optimum phase determination based on the detected jet current (1996-12-10),

5. 5000595 - Printing apparatus (1991-03-19),

6. D313239 - Typewriter (1990-12-25),

7. 4946297 - Printing apparatus (1990-08-07),

8. D306249 - Combined paper folder and envelope opener or similar article (1990-02-27),

9. D305775 - Copying machine (1990-01-30),

10. 4830525 - Typewriter with pivoting keyboard (1989-05-16),

11. D300434 - Typewriter (1989-03-28),

12. D299249 - Typewriter (1989-01-03),

13. D299248 - Typewriter (1989-01-03),

14. D297714 - Score collector for base-ball game (1988-09-20),

15. 4734632 - Driving device for a stepping motor (1988-03-29),

Company Overview

Silver Seiko Ltd., based in Tokyo, specializes in advanced printing technology, focusing on innovative solutions such as ink jet recording and automated printers. The company has a diverse portfolio that includes typewriter mechanisms, knitting machines, and copying systems, showcasing its expertise in both traditional and modern printing applications. Additionally, Silver Seiko is involved in the development of step motor control and envelope sealing technologies, positioning itself as a key player in the evolving landscape of printing and automation.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

54 Patents

#764 in Tokyo

#1,630 in Japan

#13,140 in the World

Silver Seiko Ltd.

Forward Citations = 369

52 inventors:

Kenji Tamada (13 out of 13 patents)

Taro Kasagi (7 out of 7 patents)

Mitsuhito Koike (5 out of 5 patents)

4. Shigeo Kamikura (5 out of 7 patents)

5. Yoshimitsu Nagashima (4 out of 4 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Silver Seiko Ltd.. Retrieved from https://idiyas.com/company/silver-seiko

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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