Tokuya Akase

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Chiba, JP

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Patents Grantslast 30 patents

Information Patent Grant
Light emitting indicator drive circuit
- Patent number 6,930,659
- Issue date Aug 16, 2005
- Seiko Instruments Inc.
- Masafumi Hoshino
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Self-luminous display element driving device
- Patent number 6,897,837
- Issue date May 24, 2005
- Seiko Instruments Inc.
- Kazumi Sakumoto
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Electronic timepiece having thermoelectric element
- Patent number 6,459,658
- Issue date Oct 1, 2002
- Seiko Instruments Inc.
- Susumu Fujita
- G04 - HOROLOGY
Information Patent Grant
Light emitting display device having luminance compensating circuitry
- Patent number 6,429,600
- Issue date Aug 6, 2002
- Seiko Instruments Inc.
- Susumu Fujita
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Circuit for driving a light emitting elements display device
- Patent number 6,404,139
- Issue date Jun 11, 2002
- Seiko Instruments Inc.
- Osamu Sasaki
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Self-luminous display element driving device
- Patent number 6,291,942
- Issue date Sep 18, 2001
- Seiko Instruments Inc.
- Hiroshi Odagiri
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS