Kazutoshi Ishikawa

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Ichihara, JP

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Patents Grantslast 30 patents

Information Patent Grant
Process for producing styrenic polymer
- Patent number 5,597,879
- Issue date Jan 28, 1997
- Idemitsu Petrochemical Co., Ltd.
- Hisashi Ase
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for producing styrenic polymer
- Patent number 5,306,790
- Issue date Apr 26, 1994
- Idemitsu Petrochemical Co., Ltd.
- Hideki Imabayashi
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for producing styrene-based polymers
- Patent number 5,254,647
- Issue date Oct 19, 1993
- Idemitsu Petrochemichal Co., Ltd.
- Koji Yamamoto
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for producing mainly syndiotactic styrene-based polymers
- Patent number 5,037,907
- Issue date Aug 6, 1991
- Idemitsu Petrochemical Co., Ltd.
- Hideki Imabayashi
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for producing a highly syndiotactic styrene-based polymer
- Patent number 5,032,650
- Issue date Jul 16, 1991
- Idemitsu Petrochemical Co., Ltd.
- Koji Yamamoto
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...