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Silver Seiko Ltd.

USPTO Granted Patents = 54

Trademarks = 1

Forward Citations = 366

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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 9 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

Copying Machine

Typewriter Technology

Industrial Robotics

Knitting Machine Mechanisms

Electronic Typewriters

Automatic Paper Feeding

Print Ribbon Cartridges

Step Motor Control

Envelope Sealing Devices

Fabric Manipulation Devices

Keyboard Signal Storage

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),

Silver Seiko Ltd. is a leading manufacturer of high-quality watches. With a rich history spanning over 50 years, the company has consistently produced timepieces that are renowned for their precision, elegance, and durability. From classic designs to innovative technology, Silver Seiko offers a diverse range of watches to suit every style and occasion. Each watch is meticulously crafted using the finest materials and advanced techniques, ensuring longevity and excellent performance. Visit our website to explore our collection and experience the art of timekeeping.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 16 2025

54 Patents

#671 in Tokyo

#1,593 in Japan

#12,740 in the World

Silver Seiko Ltd.

Forward Citations = 366

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)

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