Chisai Hirose

Person

Yokohama-shi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Planar lightwave circuit type variable optical attenuator
- Patent number 6,819,859
- Issue date Nov 16, 2004
- Sumitomo Electric Industries, Ltd.
- Hitoshi Hatayama
- G02 - OPTICS
Information Patent Grant
Apparatus for and method of monitoring wavelength multiplexed signa...
- Patent number 6,782,168
- Issue date Aug 24, 2004
- Sumitomo Electric Industries, Ltd.
- Hitoshi Hatayama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Silica based optical waveguide and production method therefor
- Patent number 6,690,872
- Issue date Feb 10, 2004
- Sumitomo Electric Industries, Ltd.
- Takashi Sasaki
- G02 - OPTICS
Information Patent Grant
Optical device and control method thereof
- Patent number 6,643,431
- Issue date Nov 4, 2003
- Sumitomo Electric Industries, Ltd.
- Hitoshi Hatayama
- G02 - OPTICS
Information Patent Grant
Optical filter
- Patent number 6,560,381
- Issue date May 6, 2003
- Sumitomo Electric Industries, Ltd.
- Hitoshi Hatayama
- G02 - OPTICS
Information Patent Grant
Process for producing optical waveguide
- Patent number 5,693,116
- Issue date Dec 2, 1997
- Sumitomo Electric Industries, Ltd.
- Hiroo Kanamori
- G02 - OPTICS
Information Patent Grant
Method for fabricating an optical waveguide
- Patent number 5,556,442
- Issue date Sep 17, 1996
- Sumitomo Electric Industries, Ltd.
- Hiroo Kanamori
- G02 - OPTICS
Information Patent Grant
Optical waveguide and method of fabricating the same
- Patent number 5,551,966
- Issue date Sep 3, 1996
- Sumitomo Electric Industries, Ltd.
- Chisai Hirose
- G02 - OPTICS
Information Patent Grant
Method for fabricating an optical waveguide
- Patent number 5,385,594
- Issue date Jan 31, 1995
- Sumitomo Electric Industries, Ltd.
- Hiroo Kanamori
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
Planar lightwave circuit type variable optical attenuator
- Publication number 20030016938
- Publication date Jan 23, 2003
- SUMITOMO ELECTRIC INDUSTRIES, LTD.
- Hitoshi Hatayama
- G02 - OPTICS
Information Patent Application
Apparatus for and method of monitoring wavelength multiplexed signa...
- Publication number 20030002798
- Publication date Jan 2, 2003
- SUMITOMO ELECTRIC INDUSTRIES, LTD.
- Hitoshi Hatayama
- G02 - OPTICS
Information Patent Application
Optical device and control method thereof
- Publication number 20020164124
- Publication date Nov 7, 2002
- Hitoshi Hatayama
- G02 - OPTICS
Information Patent Application
Optical filter
- Publication number 20020021856
- Publication date Feb 21, 2002
- SUMITOMO ELECTRIC INDUSTRIES, LTD.
- Hitoshi Hatayama
- G02 - OPTICS
Information Patent Application
Silica based optical waveguide and production method therefor
- Publication number 20010007606
- Publication date Jul 12, 2001
- SUMITOMO ELECTRIC INDUSTRIES, LTD.
- Takashi Sasaki
- G02 - OPTICS

Chisai Hirose

Person

Patents Grantslast 30 patents

Planar lightwave circuit type variable optical attenuator

Apparatus for and method of monitoring wavelength multiplexed signa...

Silica based optical waveguide and production method therefor

Optical device and control method thereof

Optical filter

Process for producing optical waveguide

Method for fabricating an optical waveguide

Optical waveguide and method of fabricating the same

Method for fabricating an optical waveguide

Patents Applicationslast 30 patents

Planar lightwave circuit type variable optical attenuator

Apparatus for and method of monitoring wavelength multiplexed signa...

Optical device and control method thereof

Optical filter

Silica based optical waveguide and production method therefor