Yoshirou Hirai

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Saitama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Hairspring material for mechanical timepiece and hairspring using t...
- Patent number 9,395,692
- Issue date Jul 19, 2016
- Citizen Holdings Co., Ltd.
- Yoshirou Hirai
- C21 - METALLURGY OF IRON
Information Patent Grant
Heater coil for gas sensor, detecting element for gas sensor, catal...
- Patent number 8,257,656
- Issue date Sep 4, 2012
- Citizen Holdings Co., Ltd.
- Ikuo Takahashi
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Heater coil for gas sensor, detecting element for gas sensor, catal...
- Patent number 8,246,913
- Issue date Aug 21, 2012
- Citizen Holdings Co., Ltd.
- Ikuo Takahashi
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Heater coil for gas sensor, detection element for gas sensor, conta...
- Patent number 7,713,480
- Issue date May 11, 2010
- Citizen Holdings Co., Ltd.
- Ikuo Takahashi
- G01 - MEASURING TESTING
Information Patent Grant
Impregnated cathode and method of manufacturing same, electron gun...
- Patent number 6,425,793
- Issue date Jul 30, 2002
- Sony Corporation
- Yoji Hasegawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Impregnated cathode having varying surface porosity
- Patent number 6,252,341
- Issue date Jun 26, 2001
- Sony Corporation
- Yoji Hasegawa
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
HAIRSPRING MATERIAL FOR MECHANICAL TIMEPIECE AND HAIRSPRING USING T...
- Publication number 20150241847
- Publication date Aug 27, 2015
- CITIZEN HOLDINGS CO., LTD.
- Yoshirou Hirai
- G04 - HOROLOGY
Information Patent Application
HEATER COIL FOR GAS SENSOR, DETECTING ELEMENT FOR GAS SENSOR, CATAL...
- Publication number 20100176094
- Publication date Jul 15, 2010
- CITIZEN HOLDINGS CO., LTD.
- Ikuo TAKAHASHI
- G01 - MEASURING TESTING
Information Patent Application
HEATER COIL FOR GAS SENSOR, DETECTING ELEMENT FOR GAS SENSOR, CATAL...
- Publication number 20100175995
- Publication date Jul 15, 2010
- CITIZEN HOLDINGS CO., LTD.
- Ikuo TAKAHASHI
- G01 - MEASURING TESTING
Information Patent Application
Heater Coil For Gas Sensor, Detection Element For Gas Sensor, Conta...
- Publication number 20070209936
- Publication date Sep 13, 2007
- CITZEN WATCH CO., LTD.
- Ikuo Takahashi
- G01 - MEASURING TESTING