Toru Iwashima

Person

Yokohama, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Variable dispersion compensator and optical transmission system
- Patent number 6,892,003
- Issue date May 10, 2005
- Sumitomo Electric Industries, Ltd.
- Makoto Katayama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Diffraction grating device
- Patent number 6,876,791
- Issue date Apr 5, 2005
- Sumitomo Electric Industries, Ltd.
- Kiyotaka Murashima
- G02 - OPTICS
Information Patent Grant
Method for determining an aging condition for an optical waveguide...
- Patent number 6,504,962
- Issue date Jan 7, 2003
- Sumitomo Electric Industries, Ltd.
- Shinji Ishikawa
- G02 - OPTICS
Information Patent Grant
Diffraction grating device
- Patent number 6,483,955
- Issue date Nov 19, 2002
- Sumitomo Electric Industries, Ltd.
- Manabu Shiozaki
- G02 - OPTICS
Information Patent Grant
Optical waveguide devices and methods of fabricating the same
- Patent number 6,477,308
- Issue date Nov 5, 2002
- Sumitomo Electric Industries, Ltd.
- Tetsuya Hattori
- G02 - OPTICS
Information Patent Grant
Method for determining an aging condition for an optical waveguide...
- Patent number 6,292,607
- Issue date Sep 18, 2001
- Sumitomo Electric Industries
- Shinji Ishikawa
- G02 - OPTICS
Information Patent Grant
Method for determining a condition of aging for optical fiber grating
- Patent number 6,137,931
- Issue date Oct 24, 2000
- Sumitomo Electric Industries, Ltd.
- Shinji Ishikawa
- G02 - OPTICS
Information Patent Grant
Optical filter
- Patent number 6,072,927
- Issue date Jun 6, 2000
- Sumitomo Electric Industries, Ltd.
- Toru Iwashima
- G02 - OPTICS
Information Patent Grant
Optical fiber diffraction grating, a method of fabricating thereof...
- Patent number 6,067,392
- Issue date May 23, 2000
- Sumitomo Electric Industries, Ltd.
- Toshinori Wakami
- G02 - OPTICS
Information Patent Grant
Diffraction grating type band-pass filter and method of making the...
- Patent number 6,021,242
- Issue date Feb 1, 2000
- Sumitomo Electric Industries
- Michiko Harumoto
- G02 - OPTICS
Information Patent Grant
Optical connector
- Patent number 5,859,944
- Issue date Jan 12, 1999
- Sumitomo Electric Industries, Ltd.
- Akira Inoue
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
Diffraction grating device making method and apparatus
- Publication number 20040161196
- Publication date Aug 19, 2004
- SUMITOMO ELECTRIC INDUSTRIES, LTD.
- Kiyotaka Murashima
- G02 - OPTICS
Information Patent Application
Diffraction grating device
- Publication number 20030044117
- Publication date Mar 6, 2003
- Kiyotaka Murashima
- G02 - OPTICS
Information Patent Application
Variable dispersion compensator and optical transmission system
- Publication number 20020159701
- Publication date Oct 31, 2002
- Makoto Katayama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method for determining an aging condition for an optical waveguide...
- Publication number 20020009281
- Publication date Jan 24, 2002
- Shinji Ishikawa
- G02 - OPTICS
Information Patent Application
Diffraction grating device
- Publication number 20010048789
- Publication date Dec 6, 2001
- Manabu Shiozaki
- G02 - OPTICS
Information Patent Application
Optical waveguide devices and methods of fabricating the same
- Publication number 20010041039
- Publication date Nov 15, 2001
- SUMITOMO ELECTRIC INDUSTRIES, LTD.
- Tetsuya Hattori
- G02 - OPTICS

Toru Iwashima

Person

Patents Grantslast 30 patents

Variable dispersion compensator and optical transmission system

Diffraction grating device

Method for determining an aging condition for an optical waveguide...

Diffraction grating device

Optical waveguide devices and methods of fabricating the same

Method for determining an aging condition for an optical waveguide...

Method for determining a condition of aging for optical fiber grating

Optical filter

Optical fiber diffraction grating, a method of fabricating thereof...

Diffraction grating type band-pass filter and method of making the...

Optical connector

Patents Applicationslast 30 patents

Diffraction grating device making method and apparatus

Diffraction grating device

Variable dispersion compensator and optical transmission system

Method for determining an aging condition for an optical waveguide...

Diffraction grating device

Optical waveguide devices and methods of fabricating the same