Hiroyuki Yoshida

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Akashi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Process for post-treating pre-expanded polyolefin resin particles
- Patent number 4,937,271
- Issue date Jun 26, 1990
- Kanegafuchi Kagaku Kogyo Kabushiki Kaisha
- Naruhiko Akamatsu
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Process for pre-expanding thermoplastic resin particles
- Patent number 4,810,440
- Issue date Mar 7, 1989
- Kanegafuchi Kagaku Kogyo Kabushiki Kaisha
- Hiroyuki Yoshida
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL