Katsuhiko Komiyama

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Module for quartz watch
- Patent number 5,062,090
- Issue date Oct 29, 1991
- Citizen Watch Co., Ltd.
- Katsuhiko Komiyama
- G04 - HOROLOGY
Information Patent Grant
Electronic wristwatch
- Patent number 4,629,329
- Issue date Dec 16, 1986
- Citizen Watch Co., Ltd.
- Katsuhiko Komiyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Electronic timepiece
- Patent number 4,291,400
- Issue date Sep 22, 1981
- Citizen Watch Co. Ltd.
- Katsuhiko Komiyama
- G04 - HOROLOGY
Information Patent Grant
Module structure for electronic digital timepiece
- Patent number 4,276,627
- Issue date Jun 30, 1981
- Citizen Watch Company Limited
- Katsuhiko Komiyama
- G04 - HOROLOGY
Information Patent Grant
Wristwatch with solar cells
- Patent number 4,261,049
- Issue date Apr 7, 1981
- Citizen Watch Co., Ltd.
- Katsuhiko Komiyama
- G04 - HOROLOGY
Information Patent Grant
Electronic digital timepiece having a stopwatch function and a time...
- Patent number 4,236,238
- Issue date Nov 25, 1980
- Citizen Watch Company Limited
- Katsuhiko Komiyama
- G04 - HOROLOGY
Information Patent Grant
Solid state watch module construction
- Patent number 4,202,166
- Issue date May 13, 1980
- Citizen Watch Co., Ltd.
- Katsuhiko Komiyama
- G04 - HOROLOGY