Isao Ohyama

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Ichihara, JP

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Patents Grantslast 30 patents

Information Patent Grant
Hybrid optical waveguide circuit chip, and method for predicting th...
- Patent number 6,480,642
- Issue date Nov 12, 2002
- Furukawa Electric Co., Ltd.
- Hiroshi Kawashima
- G02 - OPTICS
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
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
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 coupler/splitter with a filter
- Patent number 5,214,725
- Issue date May 25, 1993
- The Furukawa Electric Co., Ltd.
- Hisaharu Yanagawa
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
Optical hybrid module, optical device thereof and semifabricated pr...
- Publication number 20030039043
- Publication date Feb 27, 2003
- THE FURUKAWA ELECTRIC CO., LTD.
- Yoshinobu Nekado
- G02 - OPTICS