Hisaharu Yanagawa

Person

Ichihara, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Optical waveguide component and a light signal processing method us...
- Patent number 5,649,037
- Issue date Jul 15, 1997
- The Furukawa Electric Co., Ltd.
- Isao Ohyama
- G02 - OPTICS
Information Patent Grant
Composite optical device
- Patent number 5,583,958
- Issue date Dec 10, 1996
- The Furukawa Electric Co., Ltd.
- Hisaharu Yanagawa
- G02 - OPTICS
Information Patent Grant
Multifiber connector, a method of manufacturing the same, and a con...
- Patent number 5,548,675
- Issue date Aug 20, 1996
- The Furukawa Electric Co., Ltd.
- Takashi Shigematsu
- G02 - OPTICS
Information Patent Grant
Method of positioning elements of an optical integrated circuit
- Patent number 5,529,595
- Issue date Jun 25, 1996
- The Furukawa Electric Co., Ltd.
- Ken Ueki
- G02 - OPTICS
Information Patent Grant
Semiconductor optical component and manufacturing method therefor
- Patent number 5,453,874
- Issue date Sep 26, 1995
- The Furukawa Electric Co., Ltd.
- Takahiro Ono
- G02 - OPTICS
Information Patent Grant
Waveguide type optical component having optical coupling sections w...
- Patent number 5,440,656
- Issue date Aug 8, 1995
- The Furukawa Electric Co., Ltd.
- Ken Ueki
- G02 - OPTICS
Information Patent Grant
Optical line monitoring method and an apparatus permitting simultan...
- Patent number 5,396,569
- Issue date Mar 7, 1995
- The Furukawa Electric Co., Ltd.
- Hisaharu Yanagawa
- G01 - MEASURING TESTING
Information Patent Grant
Optical fiber/terminal connecting device
- Patent number 5,390,267
- Issue date Feb 14, 1995
- The Furukawa Electric Co., Ltd.
- Hisaharu Yanagawa
- G02 - OPTICS
Information Patent Grant
Method of manufacturing silica waveguide optical components
- Patent number 5,378,256
- Issue date Jan 3, 1995
- The Furukawa Electric Co., Ltd.
- Mino Green
- G02 - OPTICS
Information Patent Grant
Total internal reflection-type optical waveguide switch
- Patent number 5,369,718
- Issue date Nov 29, 1994
- The Furukawa Electric Co., Ltd.
- Yoshiyuki Kamata
- G02 - OPTICS
Information Patent Grant
Method of connecting optical waveguide and optical fiber
- Patent number 5,361,382
- Issue date Nov 1, 1994
- The Furukawa Electric Co., Ltd.
- Shirou Nakamura
- G02 - OPTICS
Information Patent Grant
Optical fiber for connection to waveguide type optical device and m...
- Patent number 5,333,232
- Issue date Jul 26, 1994
- The Furukawa Electric Co., Ltd.
- Hisaharu Yanagawa
- G02 - OPTICS
Information Patent Grant
Directional coupler type optical function element
- Patent number 5,321,782
- Issue date Jun 14, 1994
- Furukawa Electric Co., Ltd.
- Akira Mugino
- G02 - OPTICS
Information Patent Grant
Mode field conversion fiber component
- Patent number 5,301,252
- Issue date Apr 5, 1994
- The Furukawa Electric Company, Ltd.
- Hisaharu Yanagawa
- G02 - OPTICS
Information Patent Grant
Method of connecting an optical fiber to an optical waveguide
- Patent number 5,297,228
- Issue date Mar 22, 1994
- The Furukawa Electric Co., Ltd.
- Hisaharu Yanagawa
- G02 - OPTICS
Information Patent Grant
Manufacturing method for waveguide-type optical components
- Patent number 5,291,575
- Issue date Mar 1, 1994
- The Furukawa Electric Co., Ltd.
- Hisaharu Yanagawa
- G02 - OPTICS
Information Patent Grant
Directional coupler type optical device and a driving method therefor
- Patent number 5,255,334
- Issue date Oct 19, 1993
- The Furukawa Electric Co., Ltd.
- Hon-Ming Mak
- G02 - OPTICS
Information Patent Grant
Optical coupler/splitter with a filter
- Patent number 5,214,725
- Issue date May 25, 1993
- The Furukawa Electric Co., Ltd.
- Hisaharu Yanagawa
- G02 - OPTICS
Information Patent Grant
Waveguide-type coupler/splitter
- Patent number 5,179,604
- Issue date Jan 12, 1993
- The Furukawa Electric Co., Ltd.
- Hisaharu Yanagawa
- G02 - OPTICS
Information Patent Grant
Waveguide-type optical switch
- Patent number 5,177,804
- Issue date Jan 5, 1993
- The Furukawa Electric Co., Ltd.
- Takeo Shimizu
- G02 - OPTICS
Information Patent Grant
Optical semiconductor waveguide switch
- Patent number 5,148,505
- Issue date Sep 15, 1992
- The Fukukawa Electric Co., Ltd.
- Hisaharu Yanagawa
- G02 - OPTICS
Information Patent Grant
Optical directional coupler device and a method of driving same
- Patent number 5,146,518
- Issue date Sep 8, 1992
- The Furukawa Electric Co., Ltd.
- Hon-Ming Mak
- G02 - OPTICS
Information Patent Grant
Optical switch
- Patent number 5,033,811
- Issue date Jul 23, 1991
- The Furukawa Electric Co., Ltd.
- Hisaharu Yanagawa
- G02 - OPTICS
Information Patent Grant
Thin film optical component for use in optical transmission lines a...
- Patent number 4,958,897
- Issue date Sep 25, 1990
- The Furukawa Electric Co., Ltd.
- Hisaharu Yanagawa
- G02 - OPTICS
Information Patent Grant
Method and apparatus for switching optical connector
- Patent number 4,909,590
- Issue date Mar 20, 1990
- The Furukawa Electric Co., Ltd.
- Kazuo Kamiko
- G02 - OPTICS
Information Patent Grant
Multiple-fiber optical component and method for manufacturing of th...
- Patent number 4,900,118
- Issue date Feb 13, 1990
- Furukawa Electric Co., Ltd.
- Hisaharu Yanagawa
- G02 - OPTICS
Information Patent Grant
Optical fiber switch system
- Patent number 4,886,335
- Issue date Dec 12, 1989
- Furukawa Electric Co., Ltd.
- Hisaharu Yanagawa
- G02 - OPTICS
Information Patent Grant
Polling communication method
- Patent number 4,868,816
- Issue date Sep 19, 1989
- The Furukawa Electric Co. Ltd.
- Minoru Katsumata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Hisaharu Yanagawa

Person

Patents Grantslast 30 patents

Optical waveguide component and a light signal processing method us...

Composite optical device

Multifiber connector, a method of manufacturing the same, and a con...

Method of positioning elements of an optical integrated circuit

Semiconductor optical component and manufacturing method therefor

Waveguide type optical component having optical coupling sections w...

Optical line monitoring method and an apparatus permitting simultan...

Optical fiber/terminal connecting device

Method of manufacturing silica waveguide optical components

Total internal reflection-type optical waveguide switch

Method of connecting optical waveguide and optical fiber

Optical fiber for connection to waveguide type optical device and m...

Directional coupler type optical function element

Mode field conversion fiber component

Method of connecting an optical fiber to an optical waveguide

Manufacturing method for waveguide-type optical components

Directional coupler type optical device and a driving method therefor

Optical coupler/splitter with a filter

Waveguide-type coupler/splitter

Waveguide-type optical switch

Optical semiconductor waveguide switch

Optical directional coupler device and a method of driving same

Optical switch

Thin film optical component for use in optical transmission lines a...

Method and apparatus for switching optical connector

Multiple-fiber optical component and method for manufacturing of th...

Optical fiber switch system

Polling communication method