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Hirofumi Yanagi
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Tokyo, JP
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last 30 patents
Information
Patent Grant
Overtone crystal oscillator
Patent number
4,709,218
Issue date
Nov 24, 1987
Seikosha Co., Ltd.
Nakanobu Moritani
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Electrode configuration for thickness-shear mode piezoelectric vibr...
Patent number
4,370,584
Issue date
Jan 25, 1983
Seikosha Co., Ltd.
Hitoshi Ikeno
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Thickness-shear piezo-electric vibrator with additional mass for mo...
Patent number
4,262,227
Issue date
Apr 14, 1981
Kabushiki Kaisha Seikosha
Hitoshi Ikeno
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Process for preparing quartz oscillator
Patent number
4,183,126
Issue date
Jan 15, 1980
Kabushiki Kaisha Seikosha
Hitoshi Ikeno
H03 - BASIC ELECTRONIC CIRCUITRY