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Hideaki Shibata
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Ichihara, JP
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last 30 patents
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Patent Grant
Foamable resin composition and a thermoplastic foamable pattern and...
Patent number
5,403,866
Issue date
Apr 4, 1995
Hitachi Chemical Co., Ltd.
Yoshiyuki Kato
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Lens and optical disc base plate obtained from copolymer of norborn...
Patent number
4,986,648
Issue date
Jan 22, 1991
Hitachi Chemical Company, Ltd.
Akihiro Kobayashi
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Optical resin material
Patent number
4,868,261
Issue date
Sep 19, 1989
Hitachi Chemical Company, Ltd.
Akihiro Kobayashi
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Novel expandable particles of a styrene polymer and process for pre...
Patent number
4,238,570
Issue date
Dec 9, 1980
Hitachi Chemical Company, Ltd.
Hideaki Shibata
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...