Yuzo Maegawa

Person

Oita, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Process for producing 1,4-dihydroxy-2-arylnaphthoate
- Patent number 5,241,103
- Issue date Aug 31, 1993
- Sumitomo Chemical Company, Limited
- Yuzo Maegawa
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for producing 1,4-dihydroxy-2-arylnaphthoate
- Patent number 5,162,570
- Issue date Nov 10, 1992
- Sumitomo Chemical Company, Limited
- Yuzo Maegawa
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for producing piperidine derivative and stabilized resin co...
- Patent number 5,049,604
- Issue date Sep 17, 1991
- Sumitomo Chemical Company, Limited
- Takeo Fujii
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for producing 2,4-dichloro-3-alkyl-6-nitrophenol
- Patent number 5,012,015
- Issue date Apr 30, 1991
- Daiei Chemical Co., Ltd.
- Masanobu Terao
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Stabilizer for synthetic resins
- Patent number 4,725,634
- Issue date Feb 16, 1988
- Sumitomo Chemical Company, Ltd.
- Tamaki Ishii
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Piperidine derivatives, production process therefor, and stabilizer...
- Patent number 4,719,037
- Issue date Jan 12, 1988
- Sumitomo Chemical Company, Limited
- Yukoh Takahashi
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method for purifying 1-aminoanthraquinone
- Patent number 4,695,407
- Issue date Sep 22, 1987
- Sumitomo Chemical Company, Limited
- Norio Kotera
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Piperidine derivatives, their production and use as stabilizers
- Patent number 4,670,488
- Issue date Jun 2, 1987
- Sumitomo Chemical Co., Ltd.
- Yuzo Maegawa
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Piperidine derivatives, their production and use as stabilizers
- Patent number 4,670,489
- Issue date Jun 2, 1987
- Sumitomo Chemical Company, Ltd.
- Yukoh Takahashi
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Purification of compounds having high melting point
- Patent number 4,323,431
- Issue date Apr 6, 1982
- Sumitomo Chemical Company Limited
- Masatoshi Takahashi
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Process for producing 2 hydroxy-naphthalene-3-carboxylic acid
- Patent number 4,297,508
- Issue date Oct 27, 1981
- Sumitomo Chemical Company, Limited
- Yuzo Maegawa
- C07 - ORGANIC CHEMISTRY

Yuzo Maegawa

Person

Patents Grantslast 30 patents

Process for producing 1,4-dihydroxy-2-arylnaphthoate

Process for producing 1,4-dihydroxy-2-arylnaphthoate

Process for producing piperidine derivative and stabilized resin co...

Process for producing 2,4-dichloro-3-alkyl-6-nitrophenol

Stabilizer for synthetic resins

Piperidine derivatives, production process therefor, and stabilizer...

Method for purifying 1-aminoanthraquinone

Piperidine derivatives, their production and use as stabilizers

Piperidine derivatives, their production and use as stabilizers

Purification of compounds having high melting point

Process for producing 2 hydroxy-naphthalene-3-carboxylic acid