Yumiko Sakamaki

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Sayama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Thermal power generating timepiece and rear cover for thermal power...
- Patent number 6,970,399
- Issue date Nov 29, 2005
- Citizen Watch Co., Ltd.
- Shigeru Watanabe
- G04 - HOROLOGY
Information Patent Grant
Thermoelectric device and method of fabricating the same
- Patent number 6,329,217
- Issue date Dec 11, 2001
- Citizen Watch Co., Ltd.
- Shigeru Watanabe
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Thermoelectric element and method for manufacturing the same
- Patent number 6,310,383
- Issue date Oct 30, 2001
- Citizen Watch Co., Ltd.
- Shigeru Watanabe
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Thermal power generating timepiece and rear cover for thermal power...
- Publication number 20030007424
- Publication date Jan 9, 2003
- Shigeru Watanabe
- G04 - HOROLOGY