Hitoshi Shiiki

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Ibaraki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Polypropylene resin pre-expanded beads, manufacturing method thereo...
- Patent number 5,017,621
- Issue date May 21, 1991
- Kanegafuchi Kagaku Kogyo Kabushiki Kaisha
- Hitoshi Shiiki
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polypropylene resin pre-expanded beads, manufacturing method thereo...
- Patent number 4,931,477
- Issue date Jun 5, 1990
- Kanegafuchi Kagaku Kogyo Kabushiki Kaisha
- Hitoshi Shiiki
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...