Takashi Kobayakawa

Person

Yamaguchi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Process of the preparation of high-purity alkyladamantyl esters
- Patent number 6,696,595
- Issue date Feb 24, 2004
- Tokuyama Corporation
- Hiromasa Yamamoto
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Photochromic curable composition
- Patent number 5,776,376
- Issue date Jul 7, 1998
- Tokuyama Corporation
- Hironobu Nagoh
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Photochromic compound
- Patent number 5,708,063
- Issue date Jan 13, 1998
- Tokuyama Corporation
- Satoshi Imura
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparing the spiropyrone compounds
- Patent number 5,693,830
- Issue date Dec 2, 1997
- Tokuyama Corporation
- Junji Momoda
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Photochromic composition and photochromic resin obtainable by using...
- Patent number 5,683,628
- Issue date Nov 4, 1997
- Seiko Epson Corp.
- Hitoshi Mizuno
- G02 - OPTICS
Information Patent Grant
Fulgimide compound
- Patent number 5,631,382
- Issue date May 20, 1997
- Tokuyama Corporation
- Tsuneyoshi Tanizawa
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Photochromic composition and method producing photochromic cured pr...
- Patent number 5,621,017
- Issue date Apr 15, 1997
- Tokuyama Corporation
- Takashi Kobayakawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Photochromic composition
- Patent number 5,462,698
- Issue date Oct 31, 1995
- Tokuyama Corporation
- Takashi Kobayakawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Photochromic composition
- Patent number 5,395,566
- Issue date Mar 7, 1995
- Tokuyama Corporation
- Takashi Kobayakawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
Process of the preparation of high-purity alkyladamantyl esters
- Publication number 20030120107
- Publication date Jun 26, 2003
- Hiromasa Yamamoto
- C07 - ORGANIC CHEMISTRY

Takashi Kobayakawa

Person

Patents Grantslast 30 patents

Process of the preparation of high-purity alkyladamantyl esters

Photochromic curable composition

Photochromic compound

Process for preparing the spiropyrone compounds

Photochromic composition and photochromic resin obtainable by using...

Fulgimide compound

Photochromic composition and method producing photochromic cured pr...

Photochromic composition

Photochromic composition

Patents Applicationslast 30 patents

Process of the preparation of high-purity alkyladamantyl esters