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Minoru Hirai
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Shizuoka, JP
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last 30 patents
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Patent Grant
Carbon fiber chopped strands and method of production thereof
Patent number
5,227,238
Issue date
Jul 13, 1993
Toho Rayon Co., Ltd.
Minoru Hirai
D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information
Patent Grant
Method for manufacture of activated carbon fiber
Patent number
4,412,937
Issue date
Nov 1, 1983
Toho Belson Co., Ltd.
Shigeru Ikegami
D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information
Patent Grant
Fibrous activated carbon with metal chelate compound supported ther...
Patent number
4,366,085
Issue date
Dec 28, 1982
Toho Beslon Co., Ltd.
Shigeru Ikegami
D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information
Patent Grant
Process for the production of fibrous activated carbon
Patent number
4,362,646
Issue date
Dec 7, 1982
Toho Beslon Co., Ltd.
Shigeru Ikegami
D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information
Patent Grant
Process for production of activated carbon fibers
Patent number
4,285,831
Issue date
Aug 25, 1981
Toho Beslon Co., Ltd.
Masatoshi Yoshida
D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information
Patent Grant
Process for production of activated carbon fibers
Patent number
4,256,607
Issue date
Mar 17, 1981
Toho Beslon Co., Ltd.
Masatoshi Yoshida
D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information
Patent Grant
Tobacco smoke filter
Patent number
4,195,649
Issue date
Apr 1, 1980
Toho Beslon Co., Ltd.
Katsuichi Noguchi
A24 - TOBACCO CIGARS CIGARETTES SMOKERS' REQUISITES