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Yokohama, JP
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last 30 patents
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Patent Grant
Method for the preparation of a foamed article of a polyolefin resin
Patent number
4,674,976
Issue date
Jun 23, 1987
Japan Styrene Paper Corporation
Junsuke Naohara
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Patent Grant
Apparatus for the preparation of a foamed article of a polyolefin r...
Patent number
4,589,845
Issue date
May 20, 1986
Japan Styrene Paper Corp.
Junsuke Naohara
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL