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Yuichi Tokumoto
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Yokohama, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Butene oligomer derivatives having terminal 1,4-butanediol function...
Patent number
7,126,037
Issue date
Oct 24, 2006
Nippon Petrochemicals Co., Lt.
Tsutomu Takashima
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Method of dehalogenating hydrocarbon containing carbon-carbon doubl...
Patent number
6,476,284
Issue date
Nov 5, 2002
Nippon Petrochemicals Company, Limited
Koichi Ohashi
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Method of removing and recovering boron trifluoride with metal fluo...
Patent number
6,462,151
Issue date
Oct 8, 2002
Nippon Petrochemicals Company, Limited
Tsutomu Takashima
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Process for producing butene polymer
Patent number
6,300,444
Issue date
Oct 9, 2001
Nippon Petrochemicals Company, Limited
Yuichi Tokumoto
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Method of recovering boron trifluoride complex and process for prod...
Patent number
6,084,144
Issue date
Jul 4, 2000
Nippon Petrochemicals Company, Limited
Tsutomu Takashima
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Method for producing lower alkyl acetate
Patent number
5,457,228
Issue date
Oct 10, 1995
Daicel Chemical Industries, Ltd.
Yuichi Tokumoto
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Method for preparing p-isobutylstyrene
Patent number
5,436,402
Issue date
Jul 25, 1995
Nippon Petrochemicals Co., Ltd.
Isoo Shimizu
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the preparation of isopropyl acetate
Patent number
5,384,426
Issue date
Jan 24, 1995
Daicel Chemical Industries, Ltd.
Kyuichi Ohyama
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Method for preparing alpha-(4-isobutylphenyl)propionic acid or its...
Patent number
5,260,477
Issue date
Nov 9, 1993
Nippon Petrochemicals Co., Ltd.
Isoo Shimizu
C07 - ORGANIC CHEMISTRY
Patents Applications
last 30 patents
Information
Patent Application
Butene oligomer derivatives having terminal 1,4-butanediol functina...
Publication number
20040034184
Publication date
Feb 19, 2004
Tsutomu Takashima
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...