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USPTO Data Jan 1 1976 - Oct 27 2026
2,004 Patents
#65 in Tokyo
#121 in Japan
#506 in the World
Citizen Watch Company, Ltd.
Forward Citations = 23,998
1,261 inventors:
Citizen Watch Company, Ltd.
Calculating rank
% Expired Patents = 6.3
CIPO Patents = 1
EPO Patents = 199
Trademarks = 5
Forward Citations = 23,998
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1,261 inventors (with patents filed for the assignee):
Shigeru Morokawa (61 out of 65 patents)
Fukuo Sekiya (52 out of 53 patents)
Heihachiro Ebihara (41 out of 41 patents)
4. Kanetaka Sekiguchi (40 out of 46 patents)
5. Takashi Toida (34 out of 35 patents)
6. Takashi Akiyama (32 out of 69 patents)
7. Tomomi Murakami (29 out of 36 patents)
8. Yasushi Nomura (29 out of 29 patents)
9. Masafumi Ide (27 out of 51 patents)
10. Yukio Miya (27 out of 32 patents)
11. Yasushi Kaneko (26 out of 27 patents)
12. Fumio Nakajima (25 out of 26 patents)
13. Minoru Watanabe (24 out of 200 patents)
14. Kazunari Kume (24 out of 24 patents)
15. Shinya Kondoh (23 out of 26 patents)
Core Competencies:
Mechanical Timepiece
Light-Emitting Device
Watchcase
Timepiece
Electronic Watch
Magnetic Field Sensor
Control Device
Machine Tool
Detection Device
Pressure Detection
Tooling Mechanism
Emotion Assessment
2,004 patents:
Company Overview
Citizen Watch Company, Ltd., headquartered in Tokyo, Japan, is a leading innovator in timepiece technology, specializing in the development and manufacturing of a diverse range of watches. The company is renowned for its advancements in mechanical timepieces and electronic watches, integrating cutting-edge technologies such as light-emitting devices and magnetic field sensors. Citizen's commitment to precision and quality is evident in its extensive research across various domains, including control devices and watchcase design, positioning it as a key player in the global watch industry.
Profile summary synthesized from public USPTO records and patent filings.
IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Citizen Watch Company, Ltd.. Retrieved from https://idiyas.com/company/citizen-watch-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]
1 patent (CIPO):
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]
199 patents (EPO):
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]