Hiroyuki Chihara

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Suwa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Power circuit for an electronic timepiece
- Patent number 4,435,089
- Issue date Mar 6, 1984
- Kabushiki Kaisha Suwa Seikosha
- Hiroyuki Chihara
- G04 - HOROLOGY
Information Patent Grant
Electronic timepiece
- Patent number 4,395,138
- Issue date Jul 26, 1983
- Kabushiki Kaisha Suwa Seikosha
- Hiroyuki Chihara
- G04 - HOROLOGY
Information Patent Grant
Electronic timepiece battery monitoring circuit
- Patent number 4,232,383
- Issue date Nov 4, 1980
- Kabushiki Kaisha Suwa Seikosha
- Hiroyuki Chihara
- G04 - HOROLOGY
Information Patent Grant
AC driving mode and circuit for an electro-optical display
- Patent number 4,196,432
- Issue date Apr 1, 1980
- Kabushiki Kaisha Suwa Seikosha
- Hiroyuki Chihara
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Electronic timepiece correction circuit
- Patent number 4,182,108
- Issue date Jan 8, 1980
- Kabushiki Kaisha Suwa Seikosha
- Hiroyuki Chihara
- G04 - HOROLOGY