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Masahiko Kishida
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Hiratsuka, JP
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last 30 patents
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Patent Grant
Method of producing a foamed, molded article
Patent number
4,806,293
Issue date
Feb 21, 1989
Japan Styrene Paper Corporation
Hiroyuki Akiyama
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Patent Grant
Method of pressurizing treatment of pre-foamed particles of polyole...
Patent number
4,443,393
Issue date
Apr 17, 1984
Japan Styrene Paper Corporation
Hiroyuki Akiyama
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL