Keizo Takahama

Person

Chigasaki, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Photosensitive resin composition, optical waveguide film, film for...
- Patent number 8,699,841
- Issue date Apr 15, 2014
- Sumitomo Bakelite Co., Ltd.
- Tetsuya Mori
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Optical waveguides and methods thereof
- Patent number 8,420,293
- Issue date Apr 16, 2013
- Sumitomo Bakelite Co., Ltd.
- Koji Choki
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Substrate for mounting an optical element, optical circuit substrat...
- Patent number 8,208,769
- Issue date Jun 26, 2012
- Sumitomo Bakelite Co., Ltd.
- Koji Choki
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Light guide and light guide structure
- Patent number 8,200,058
- Issue date Jun 12, 2012
- Sumitomo Bakelite Company, Ltd.
- Koji Choki
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Optical waveguides and methods thereof
- Patent number 8,053,166
- Issue date Nov 8, 2011
- Sumitomo Bakelite Co. Ltd.
- Koji Choki
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Optical waveguides and methods thereof
- Patent number 8,021,825
- Issue date Sep 20, 2011
- Sumitomo Bakelite Co., Ltd.
- Koji Choki
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Substrate for mounting an optical element, optical circuit substrat...
- Patent number 7,869,670
- Issue date Jan 11, 2011
- Sumitomo Bakelite Co., Ltd.
- Koji Choki
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Optical waveguides and methods thereof
- Patent number 7,820,356
- Issue date Oct 26, 2010
- Sumitomo Bakelite Co. Ltd.
- Koji Choki
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Heat resistant resin composition, heat resistant film adhesive and...
- Patent number 5,773,509
- Issue date Jun 30, 1998
- Sumitomo Bakelite Company Limited
- Tatsuhiro Yoshida
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL WAVEGUIDES AND METHODS THEREOF
- Publication number 20120064458
- Publication date Mar 15, 2012
- PROMERUS, LLC
- Koji CHOKI
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
PHOTOSENSITIVE RESIN COMPOSITION, OPTICAL WAVEGUIDE FILM, FILM FOR...
- Publication number 20110286713
- Publication date Nov 24, 2011
- SUMITOMO BAKELITE CO., LTD.
- Tetsuya Mori
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
SUBSTRATE FOR MOUNTING AN OPTICAL ELEMENT, OPTICAL CIRCUIT SUBSTRAT...
- Publication number 20100226606
- Publication date Sep 9, 2010
- SUMITOMO BAKELITE CO., LTD.
- Koji CHOKI
- G02 - OPTICS
Information Patent Application
LIGHT GUIDE AND LIGHT GUIDE STRUCTURE
- Publication number 20100067861
- Publication date Mar 18, 2010
- SUMITOMO BAKELITE COMPANY LIMITED
- Koji Choki
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
OPTICAL WAVEGUIDES AND METHODS THEREOF
- Publication number 20100062378
- Publication date Mar 11, 2010
- SUMITOMO BAKELITE CO., LTD.
- Koji Choki
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
OPTICAL WAVEGUIDES AND METHODS THEREOF
- Publication number 20100061688
- Publication date Mar 11, 2010
- SUMITOMO BAKELITE CO., LTD.
- Koji Choki
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
OPTICAL ELEMENT MOUNTING BOARD, OPTICAL CIRCUIT BOARD AND OPTICAL E...
- Publication number 20090245720
- Publication date Oct 1, 2009
- SUMITOMO BAKELITE CO.,LTD.
- Koji Choki
- G02 - OPTICS
Information Patent Application
Optical waveguides and methods thereof
- Publication number 20070148566
- Publication date Jun 28, 2007
- SUMITOMO BAKELITE CO., LTD.
- Koji Choki
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

Keizo Takahama

Person

Patents Grantslast 30 patents

Photosensitive resin composition, optical waveguide film, film for...

Optical waveguides and methods thereof

Substrate for mounting an optical element, optical circuit substrat...

Light guide and light guide structure

Optical waveguides and methods thereof

Optical waveguides and methods thereof

Substrate for mounting an optical element, optical circuit substrat...

Optical waveguides and methods thereof

Heat resistant resin composition, heat resistant film adhesive and...

Patents Applicationslast 30 patents

OPTICAL WAVEGUIDES AND METHODS THEREOF

PHOTOSENSITIVE RESIN COMPOSITION, OPTICAL WAVEGUIDE FILM, FILM FOR...

SUBSTRATE FOR MOUNTING AN OPTICAL ELEMENT, OPTICAL CIRCUIT SUBSTRAT...

LIGHT GUIDE AND LIGHT GUIDE STRUCTURE

OPTICAL WAVEGUIDES AND METHODS THEREOF

OPTICAL WAVEGUIDES AND METHODS THEREOF

OPTICAL ELEMENT MOUNTING BOARD, OPTICAL CIRCUIT BOARD AND OPTICAL E...

Optical waveguides and methods thereof