Yoji Hasegawa

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Kanagawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Short arc type high voltage electrical discharge electrode, short a...
- Patent number 8,018,155
- Issue date Sep 13, 2011
- Sony Corporation
- Yoji Hasegawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Non-evaporation type getter, display unit and production method for...
- Patent number 7,126,276
- Issue date Oct 24, 2006
- Sony Corporation
- Yoji Hasegawa
- B22 - CASTING POWDER METALLURGY
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
Short arc type high voltage electrical discharge electrode, short a...
- Publication number 20070108911
- Publication date May 17, 2007
- SONY CORPORATION
- Yoji Hasegawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Non-evaporation type getter, display unit and production method for...
- Publication number 20040169469
- Publication date Sep 2, 2004
- Yoji Hasegawa
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL