Hiroyuki Koura

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Ichihara, JP

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Patents Grantslast 30 patents

Information Patent Grant
Process for producing ethylene-propylene block copolymer
- Patent number 5,473,021
- Issue date Dec 5, 1995
- Sumitomo Chemical Company, Limited
- Hiroyuki Koura
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for producing ethylene-propylene block copolymer
- Patent number 5,449,738
- Issue date Sep 12, 1995
- Sumitomo Chemical Company, Ltd.
- Hiroyuki Koura
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Gas distributor for use in gas phase polymerization apparatus
- Patent number 5,381,827
- Issue date Jan 17, 1995
- Sumitomo Chemical Company, Limited
- Hiroyuki Koura
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...