Katsumi Hirakawa

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Yokkaichi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Olefin polymerization catalyst and process for producing olefin pol...
- Patent number 6,376,416
- Issue date Apr 23, 2002
- Japan Polychem Corporation
- Katsumi Hirakawa
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Ethylene polymers
- Patent number 5,693,719
- Issue date Dec 2, 1997
- Mitsubishi Chemical Corporation
- Yukitaka Goto
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Powder catalyst composition and process for polymerizing olefins wi...
- Patent number 5,474,962
- Issue date Dec 12, 1995
- Mitsubishi Petrochemical Company Limited
- Tadashi Takahashi
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Catalyst for olefin polymerization
- Patent number 4,814,314
- Issue date Mar 21, 1989
- Mitsubishi Petrochemical Company Limited
- Mitsuyuki Matsuura
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for polymerizing ethylene
- Patent number 4,762,898
- Issue date Aug 9, 1988
- Mitsubishi Petrochemical Company Limited
- Mitsuyuki Matsuura
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...