Yoshitsugu Hirokawa

Person

Kamakura, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Alkylidenenorbornene polymer and process for producing the same
- Patent number 5,399,646
- Issue date Mar 21, 1995
- Nippon Zeon Co., Ltd.
- Teiji Kohara
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Method of producing polymers
- Patent number 5,248,746
- Issue date Sep 28, 1993
- Nippon Zeon Co., Ltd.
- Yoshiharu Shimokawa
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Method for modifying rubbers
- Patent number 4,677,153
- Issue date Jun 30, 1987
- Nippon Zeon Co., Ltd.
- Shizuo Kitahara
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for addition reaction of unsaturated organic compounds
- Patent number 4,654,435
- Issue date Mar 31, 1987
- Nippon Zeon Co., Ltd.
- Shizuo Kitahara
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for modifying rubbers employing a compound containing a car...
- Patent number 4,412,041
- Issue date Oct 25, 1983
- Nippon Zeon Co. Ltd.
- Shizuo Kitahara
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Modified rubber composition employing a compound containing a carbo...
- Patent number 4,412,031
- Issue date Oct 25, 1983
- Nippon Zeon Co., Ltd.
- Shizuo Kitahara
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

Yoshitsugu Hirokawa

Person

Patents Grantslast 30 patents

Alkylidenenorbornene polymer and process for producing the same

Method of producing polymers

Method for modifying rubbers

Process for addition reaction of unsaturated organic compounds

Process for modifying rubbers employing a compound containing a car...

Modified rubber composition employing a compound containing a carbo...