Masahiko Fujiwara

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Photo-electric combined substrate, optical waveguide and manufactur...
- Patent number 6,477,284
- Issue date Nov 5, 2002
- NEC Corporation
- Mikio Oda
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Optical module and manufacturing method thereof
- Patent number 6,430,327
- Issue date Aug 6, 2002
- NEC Corporation
- Yoshinobu Kaneyama
- G02 - OPTICS
Information Patent Grant
Hitless switching apparatus and method for optical network
- Patent number 5,471,332
- Issue date Nov 28, 1995
- NEC Corporation
- Tatsuya Shiragaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
System for transmitting data using wavelength division multiplexing
- Patent number 5,365,344
- Issue date Nov 15, 1994
- NEC Corporation
- Masahiro Eda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Tunable fiber Fabry-Perot etalon optical filter
- Patent number 5,251,275
- Issue date Oct 5, 1993
- NEC Corporation
- Toshihide Kuriyama
- G02 - OPTICS
Information Patent Grant
Optical wavelength-division switching system with coherent optical...
- Patent number 4,807,227
- Issue date Feb 21, 1989
- NEC Corporation
- Masahiko Fujiwara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical switch circuit
- Patent number 4,798,435
- Issue date Jan 17, 1989
- NEC Corporation
- Masahiko Fujiwara
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Device and method for providing optical bistability with free carri...
- Patent number 4,795,241
- Issue date Jan 3, 1989
- NEC Corporation
- Keiro Komatsu
- G02 - OPTICS
Information Patent Grant
Optical switch
- Patent number 4,778,235
- Issue date Oct 18, 1988
- NEC Corporation
- Masahiko Fujiwara
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
Photo-electric combined substrate
- Publication number 20030053765
- Publication date Mar 20, 2003
- NEC Corporation
- Mikio Oda
- G02 - OPTICS

Masahiko Fujiwara

Person

Patents Grantslast 30 patents

Photo-electric combined substrate, optical waveguide and manufactur...

Optical module and manufacturing method thereof

Hitless switching apparatus and method for optical network

System for transmitting data using wavelength division multiplexing

Tunable fiber Fabry-Perot etalon optical filter

Optical wavelength-division switching system with coherent optical...

Optical switch circuit

Device and method for providing optical bistability with free carri...

Optical switch

Patents Applicationslast 30 patents

Photo-electric combined substrate