KOJI ENBUTSU

Person

TOKYO, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Optical switch, optical modulator and wavelength variable filter
- Patent number 7,492,975
- Issue date Feb 17, 2009
- Nippon Telegraph and Telephone Corporation
- Seiji Toyoda
- G02 - OPTICS
Information Patent Grant
Photosensitive composition for manufacturing optical waveguide, pro...
- Patent number 7,358,036
- Issue date Apr 15, 2008
- Nippon Telegraph and Telephone Corporation
- Seiji Toyoda
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Optical switch, optical modulator and wavelength variable filter
- Patent number 7,356,227
- Issue date Apr 8, 2008
- Nippon Telegraph and Telephone Corporation
- Seiji Toyoda
- G02 - OPTICS
Information Patent Grant
Optical switch, optical modulator and wavelength variable filter
- Patent number 7,340,116
- Issue date Mar 4, 2008
- Nippon Telegraph and Telephone Corporation
- Seiji Toyoda
- G02 - OPTICS
Information Patent Grant
Optical switch, optical modulator and wavelength variable filter
- Patent number 7,336,854
- Issue date Feb 26, 2008
- Nippon Telegraph and Telephone Corporation
- Seiji Toyoda
- G02 - OPTICS
Information Patent Grant
Optical waveguide and method of manufacture
- Patent number 7,110,652
- Issue date Sep 19, 2006
- Nippon Telegraph and Telephone Corporation
- Masahiro Sasaura
- G02 - OPTICS
Information Patent Grant
Optical waveguide and method of manufacture
- Patent number 6,996,321
- Issue date Feb 7, 2006
- Nippon Telegraph and Telephone Corporation
- Masahiro Sasaura
- G02 - OPTICS
Information Patent Grant
Photosensitive composition for manufacturing optical waveguide, pro...
- Patent number 6,933,097
- Issue date Aug 23, 2005
- Nippon Telegraph and Telephone Corporation
- Seiji Toyoda
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Photosensitive composition for manufacturing optical waveguide, pro...
- Patent number 6,806,040
- Issue date Oct 19, 2004
- Nippon Telegraph and Telephone Corporation
- Seiji Toyoda
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Wavelength converter
- Patent number 6,795,232
- Issue date Sep 21, 2004
- Nippon Telegraph and Telephone Corporation
- Kazuo Fujiura
- G02 - OPTICS
Information Patent Grant
Optical waveguide and method of manufacture
- Patent number 6,792,189
- Issue date Sep 14, 2004
- Nippon Telegraph and Telephone Corporation
- Masahiro Sasaura
- G02 - OPTICS
Information Patent Grant
Photosensitive composition for manufacturing optical waveguide, pro...
- Patent number 6,537,723
- Issue date Mar 25, 2003
- Nippon Telegraph and Telephone Corporation
- Seiji Toyoda
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Optical waveguide device for optical wiring and manufacturing metho...
- Patent number 6,496,624
- Issue date Dec 17, 2002
- Nippon Telegraph and Telephone Corporation
- Makoto Hikita
- G02 - OPTICS
Information Patent Grant
Manufacturing method for optical waveguide device
- Patent number 6,226,429
- Issue date May 1, 2001
- Nippon Telegraph and Telephone Corporation
- Makoto Hikita
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL SWITCH, OPTICAL MODULATOR AND WAVELENGTH VARIABLE FILTER
- Publication number 20070253659
- Publication date Nov 1, 2007
- Nippon Telegraph and Telephone Corporation
- Seiji Toyoda
- G02 - OPTICS
Information Patent Application
OPTICAL SWITCH, OPTICAL MODULATOR AND WAVELENGTH VARIABLE FILTER
- Publication number 20070092181
- Publication date Apr 26, 2007
- Nippon Telegraph and Telephone Corporation
- Seiji Toyoda
- G02 - OPTICS
Information Patent Application
OPTICAL SWITCH, OPTICAL MODULATOR AND WAVELENGTH VARIABLE FILTER
- Publication number 20070086691
- Publication date Apr 19, 2007
- Nippon Telegraph and Telephone Corporation
- Seiji Toyoda
- G02 - OPTICS
Information Patent Application
Optical switch, optical modulator and variable wavelength filter
- Publication number 20070058896
- Publication date Mar 15, 2007
- Nippon Telegraph and Telephone Corporation
- Seiji Toyoda
- G02 - OPTICS
Information Patent Application
Optical waveguide and method of manufacture
- Publication number 20060018616
- Publication date Jan 26, 2006
- Nippon Telegraph and Telephone Corporation
- Masahiro Sasaura
- G02 - OPTICS
Information Patent Application
Optical waveguide and method of manufacture
- Publication number 20060018617
- Publication date Jan 26, 2006
- Nippon Telegraph and Telephone Corporation
- Masahiro Sasaura
- G02 - OPTICS
Information Patent Application
Optical waveguide and method of manufacture
- Publication number 20050008318
- Publication date Jan 13, 2005
- Nippon Telegraph and Telephone Corporation
- Masahiro Sasaura
- G02 - OPTICS
Information Patent Application
Photosensitive composition for manufacturing optical waveguide, pro...
- Publication number 20040175650
- Publication date Sep 9, 2004
- Nippon Telegraph and Telephone Corporation
- Seiji Toyoda
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Photosensitive composition for manufacturing optical waveguide, pro...
- Publication number 20040175655
- Publication date Sep 9, 2004
- Nippon Telegraph and Telephone Corporation
- Seiji Toyoda
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Photosensitive composition for manufacturing optical waveguide, pro...
- Publication number 20040175651
- Publication date Sep 9, 2004
- Nippon Telegraph and Telephone Corporation
- Seiji Toyoda
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Photosensitive composition for manufacturing optical waveguide, pro...
- Publication number 20030148228
- Publication date Aug 7, 2003
- Nippon Telegraph and Telephone Corporation
- Seiji Toyoda
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Optical waveguide and method of manufacture
- Publication number 20030072550
- Publication date Apr 17, 2003
- Masahiro Sasaura
- G02 - OPTICS
Information Patent Application
Wavelength converter
- Publication number 20020141040
- Publication date Oct 3, 2002
- Kazuo Fujiura
- G02 - OPTICS
Information Patent Application
METHOD FOR PRODUCING AN OPTICAL WAVEGUIDE
- Publication number 20010055461
- Publication date Dec 27, 2001
- SATORU TOMARU
- G02 - OPTICS

KOJI ENBUTSU

Person

Patents Grantslast 30 patents

Optical switch, optical modulator and wavelength variable filter

Photosensitive composition for manufacturing optical waveguide, pro...

Optical switch, optical modulator and wavelength variable filter

Optical switch, optical modulator and wavelength variable filter

Optical switch, optical modulator and wavelength variable filter

Optical waveguide and method of manufacture

Optical waveguide and method of manufacture

Photosensitive composition for manufacturing optical waveguide, pro...

Photosensitive composition for manufacturing optical waveguide, pro...

Wavelength converter

Optical waveguide and method of manufacture

Photosensitive composition for manufacturing optical waveguide, pro...

Optical waveguide device for optical wiring and manufacturing metho...

Manufacturing method for optical waveguide device

Patents Applicationslast 30 patents

OPTICAL SWITCH, OPTICAL MODULATOR AND WAVELENGTH VARIABLE FILTER

OPTICAL SWITCH, OPTICAL MODULATOR AND WAVELENGTH VARIABLE FILTER

OPTICAL SWITCH, OPTICAL MODULATOR AND WAVELENGTH VARIABLE FILTER

Optical switch, optical modulator and variable wavelength filter

Optical waveguide and method of manufacture

Optical waveguide and method of manufacture

Optical waveguide and method of manufacture

Photosensitive composition for manufacturing optical waveguide, pro...

Photosensitive composition for manufacturing optical waveguide, pro...

Photosensitive composition for manufacturing optical waveguide, pro...

Photosensitive composition for manufacturing optical waveguide, pro...

Optical waveguide and method of manufacture

Wavelength converter

METHOD FOR PRODUCING AN OPTICAL WAVEGUIDE