Kuninori Hirosawa

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Isehara, JP

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Patents Grantslast 30 patents

Information Patent Grant
Process for producing foamed and molded article of polypropylene resin
- Patent number 4,440,703
- Issue date Apr 3, 1984
- Japan Styrene Paper Corporation
- Hiroyuki Akiyama
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Process for producing pre-foamed particles of polyolefin resin
- Patent number 4,436,840
- Issue date Mar 13, 1984
- Japan Styrene Paper Corporation
- Hiroyuki Akiyama
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for producing foamed polyolefin articles from aged pre-foam...
- Patent number 4,399,087
- Issue date Aug 16, 1983
- Japan Styrene Paper Corporation
- Hiroyuki Akiyama
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Pre-foamed particles of polypropylene resin and process for product...
- Patent number 4,379,859
- Issue date Apr 12, 1983
- Japan Styrene Paper Corporation
- Kuninori Hirosawa
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...