Katsuyoshi Yamashita

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Niihama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Propylene-ethylene copolymer having improved stretchability
- Patent number 4,414,373
- Issue date Nov 8, 1983
- Sumitomo Chemical Co., Ltd.
- Akinobu Shiga
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for producing a propylene-ethylene copolymer having improve...
- Patent number 4,355,144
- Issue date Oct 19, 1982
- Sumitomo Chemical Company Limited
- Akinobu Shiga
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...