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Akira Okada
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Yokohama, JP
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last 30 patents
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Patent Grant
Production method of sintered silicon nitride
Patent number
5,545,362
Issue date
Aug 13, 1996
Nissan Motor Company
Naoto Hirosaki
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Laminated composite composed of fiber-reinforced ceramics and ceram...
Patent number
5,211,999
Issue date
May 18, 1993
Nissan Motor Co., Ltd.
Akira Okada
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Sintered silicon nitride and production method thereof
Patent number
5,126,294
Issue date
Jun 30, 1992
Nissan Motor Co., Ltd.
Naoto Hirosaki
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Gas pressure sintering of silicon nitride with addition of rare ear...
Patent number
4,810,678
Issue date
Mar 7, 1989
Nissan Motor Co., Ltd.
Naoto Hirosaki
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Particles of activated oxidized polysaccharide substance coated wit...
Patent number
4,339,360
Issue date
Jul 13, 1982
Agency of Industrial Science and Technology
Toshimi Shimizu
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Method for surface treatment of shaped articles of polyvinyl chlori...
Patent number
4,272,559
Issue date
Jun 9, 1981
Agency of Industrial Science and Technology
Michihiko Asai
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Device for removal of excess water from blood
Patent number
4,218,321
Issue date
Aug 19, 1980
Agency of Industrial Science and Technology
Kanji Sasaki
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE