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For the Inventor, By the Inventor

Tokyo, Japan

Katsumi Shimamura

This inventor holds 15 USPTO granted patents. Top assignees: Seikosha Co., Ltd., Seiko Clock Inc.. Active years: 1991-1999.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Katsumi Shimamura. Retrieved from https://idiyas.com/inventor/katsumi-shimamura

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 15

% Patents Active = 100.0

Average Co-Inventor Count = 1.1

ph-index = 4

Forward Citations = 55(Granted Patents)


Company Filing History:

goldMedal12 out of 696 
 
Seikosha Co., Ltd.
 patents
silverMedal3 out of 29 
 
Seiko Clock Inc.
 patents

Years Active: 1991-1999

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15 patents (USPTO):Explore Patents
1. D412669 - Clock (1999-08-10),
2. D412286 - Clock (1999-07-27),
3. D386093 - Clock (1997-11-11),
4. D378497 - Clock (1997-03-18),
5. D354011 - Clock (1995-01-03),
6. D349060 - Clock (1994-07-26),
7. D347185 - Clock (1994-05-24),
8. D346972 - Clock (1994-05-17),
9. D346968 - Clock (1994-05-17),
10. D344027 - Clock (1994-02-08),
11. D344025 - Clock (1994-02-08),
12. D337529 - Travel alarm clock (1993-07-20),
13. D335087 - Clock (1993-04-27),
14. D322577 - Clock (1991-12-24),
15. D321661 - Clock (1991-11-19),

Title: The Innovative Mind of Katsumi Shimamura

Introduction: Katsumi Shimamura, a distinguished inventor based in Tokyo, Japan, has made significant contributions to the world of timekeeping with his innovative designs and technologies. With a prolific portfolio of 15 patents, Shimamura's work has profoundly influenced the clockmaking industry.

Latest Patents: Among his latest creations is a groundbreaking Clock, which showcases his commitment to merging functionality with aesthetic appeal. This invention continues to push the boundaries of conventional clock design.

Career Highlights: Throughout his career, Shimamura has collaborated with reputable companies, including Seikosha Co., Ltd. and Seiko Clock Inc. His tenure at these firms has allowed him to develop unique inventions that resonate with consumers and meet modern demands.

Collaborations: In his journey, Shimamura has worked alongside notable professionals such as Seiji Odaka and Keiko Yoshida. Their collective efforts have resulted in innovative solutions and advancements in clock technology that have defined industry standards.

Conclusion: Katsumi Shimamura stands out as a prominent figure in the invention of clocks, with a rich history of patents and collaborations. His work not only reflects his ingenuity but also contributes greatly to the evolution of timekeeping devices. His legacy in the field continues to inspire future inventors and innovation enthusiasts alike.

Profile summary based on public USPTO records.
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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