Norihisa Naganuma

Person

Yokohama, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Light communication device, light module, and method for coupling
- Patent number 10,001,693
- Issue date Jun 19, 2018
- Fujitsu Optical Components Limited
- Masaki Sugiyama
- G02 - OPTICS
Information Patent Grant
Optical modulating apparatus and optical transmitter
- Patent number 9,285,650
- Issue date Mar 15, 2016
- Fujitsu Optical Components Limited
- Masaki Sugiyama
- G02 - OPTICS
Information Patent Grant
Optical amplifier using reflection-type variable optical attenuator...
- Patent number 7,209,284
- Issue date Apr 24, 2007
- Fujitsu Limited
- Norifumi Shukunami
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical switch device
- Patent number 6,993,217
- Issue date Jan 31, 2006
- Fujitsu Limited
- Shinji Maruyama
- G02 - OPTICS
Information Patent Grant
Light source apparatus, optical amplifier and optical communication...
- Patent number 6,856,455
- Issue date Feb 15, 2005
- Fujitsu Limited
- Norihisa Naganuma
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical switch having an array of optical fibers with respective, r...
- Patent number 6,829,403
- Issue date Dec 7, 2004
- Fujitsu Limited
- Norihisa Naganuma
- G02 - OPTICS
Information Patent Grant
Wavelength characteristic control device, gain equalizer, and light...
- Patent number 6,829,396
- Issue date Dec 7, 2004
- Fujitsu Limited
- Norihisa Naganuma
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Wavelength characteristic variable apparatus
- Patent number 6,807,335
- Issue date Oct 19, 2004
- Fujitsu Limited
- Nobuaki Mitamura
- G02 - OPTICS
Information Patent Grant
Wavelength characteristics control device, gain equalizer and light...
- Patent number 6,650,797
- Issue date Nov 18, 2003
- Fujitsu Limited
- Norihisa Naganuma
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical device, terminal unit, and system for wavelength division m...
- Patent number 6,515,776
- Issue date Feb 4, 2003
- Fujitsu Limited
- Norihisa Naganuma
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method for gain equalization, and device and system for use in carr...
- Patent number 6,496,619
- Issue date Dec 17, 2002
- Fujitsu Limited
- Norihisa Naganuma
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Light source apparatus, optical amplifier and optical communication...
- Patent number 6,452,720
- Issue date Sep 17, 2002
- Fujitsu Limited
- Norihisa Naganuma
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Wavelength characteristic control device, gain equalizer, and light...
- Patent number 6,370,285
- Issue date Apr 9, 2002
- Fujitsu Limited
- Norihisa Naganuma
- G02 - OPTICS
Information Patent Grant
Optical amplifier and fiber module for optical amplification
- Patent number 6,310,717
- Issue date Oct 30, 2001
- Fujitsu Limited
- Norihisa Naganuma
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Polarized light synthesizing apparatus, a polarized light splitting...
- Patent number 6,295,393
- Issue date Sep 25, 2001
- Fujistsu Limited
- Norihisa Naganuma
- G02 - OPTICS
Information Patent Grant
Optical device
- Patent number 6,115,178
- Issue date Sep 5, 2000
- Fujitsu Limited
- Norihisa Naganuma
- G02 - OPTICS
Information Patent Grant
Optical repeater having redundancy
- Patent number 6,101,025
- Issue date Aug 8, 2000
- Fujitsu Limited
- Norihisa Naganuma
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Wavelength detecting device
- Patent number 6,046,813
- Issue date Apr 4, 2000
- Fujitsu Limilted
- Norihisa Naganuma
- G02 - OPTICS
Information Patent Grant
Optical multiplexer/demultiplexer and wavelength division multiplex...
- Patent number 5,905,827
- Issue date May 18, 1999
- Fujitsu Limited
- Norihisa Naganuma
- G02 - OPTICS
Information Patent Grant
Optical device and optical amplifier
- Patent number 5,812,307
- Issue date Sep 22, 1998
- Fujitsu Limited
- Norihisa Naganuma
- G02 - OPTICS
Information Patent Grant
Optical device having an optical film with an incident angle thereu...
- Patent number 5,801,892
- Issue date Sep 1, 1998
- Fujitsu Limited
- Norihisa Naganuma
- G02 - OPTICS
Information Patent Grant
Optical device for coupling and separating two light components
- Patent number 5,796,887
- Issue date Aug 18, 1998
- Fujitsu Limited
- Norihisa Naganuma
- G02 - OPTICS
Information Patent Grant
Polarization independent optical device
- Patent number 5,739,951
- Issue date Apr 14, 1998
- Fujitsu Limited
- Norihisa Naganuma
- G02 - OPTICS
Information Patent Grant
Polarization independent optical device
- Patent number 5,377,040
- Issue date Dec 27, 1994
- Fujitsu Limited
- Norihisa Naganuma
- G02 - OPTICS
Information Patent Grant
Polarization beam coupler including a splitter for producing an out...
- Patent number 5,223,975
- Issue date Jun 29, 1993
- Fujitsu Limited
- Norihisa Naganuma
- G02 - OPTICS
Information Patent Grant
Optical coupler ultizing prisms
- Patent number 5,125,053
- Issue date Jun 23, 1992
- Fujitsu Limited
- Kenichi Abe
- G02 - OPTICS
Information Patent Grant
Polarization coupler
- Patent number 5,015,055
- Issue date May 14, 1991
- Fujitsu Limited
- Hisashi Takamatsu
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
LIGHT COMMUNICATION DEVICE, LIGHT MODULE, AND METHOD FOR COUPLING
- Publication number 20170082906
- Publication date Mar 23, 2017
- FUJITSU OPTICAL COMPONENTS LIMITED
- MASAKI SUGIYAMA
- G02 - OPTICS
Information Patent Application
OPTICAL MODULE
- Publication number 20160246156
- Publication date Aug 25, 2016
- FUJITSU OPTICAL COMPONENTS LIMITED
- Masaki Sugiyama
- G02 - OPTICS
Information Patent Application
OPTICAL MODULATING APPARATUS AND OPTICAL TRANSMITTER
- Publication number 20140119745
- Publication date May 1, 2014
- Fujitsu Opitcal Components Limited
- Masaki SUGIYAMA
- G02 - OPTICS
Information Patent Application
Optical apparatus
- Publication number 20050270635
- Publication date Dec 8, 2005
- FUJITSU LIMITED
- Norifumi Shukunami
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical switch device
- Publication number 20050249452
- Publication date Nov 10, 2005
- FUJITSU LIMITED
- Shinji Maruyama
- G02 - OPTICS
Information Patent Application
Wavelength characteristic variable filter, optical amplifier, and o...
- Publication number 20050094272
- Publication date May 5, 2005
- FUJITSU LIMITED
- Norihisa Naganuma
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Wavelength characteristic control device, gain equalizer, and light...
- Publication number 20040005107
- Publication date Jan 8, 2004
- FUJITSU LIMITED
- Norihisa Naganuma
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical switch
- Publication number 20030174933
- Publication date Sep 18, 2003
- FUJITSU LIMITED
- Norihisa Naganuma
- G02 - OPTICS
Information Patent Application
Wavelength characteristic variable apparatus
- Publication number 20030021527
- Publication date Jan 30, 2003
- FUJITSU LIMITED
- Nobuaki Mitamura
- G02 - OPTICS
Information Patent Application
Light source apparatus, optical amplifier and optical communication...
- Publication number 20030016721
- Publication date Jan 23, 2003
- FUJITSU LIMITED
- Norihisa Naganuma
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Wavelength characteristic control device, gain equalizer, and light...
- Publication number 20020090161
- Publication date Jul 11, 2002
- FUJITSU LIMITED
- Norihisa Naganuma
- G02 - OPTICS

Norihisa Naganuma

Person

Patents Grantslast 30 patents

Light communication device, light module, and method for coupling

Optical modulating apparatus and optical transmitter

Optical amplifier using reflection-type variable optical attenuator...

Optical switch device

Light source apparatus, optical amplifier and optical communication...

Optical switch having an array of optical fibers with respective, r...

Wavelength characteristic control device, gain equalizer, and light...

Wavelength characteristic variable apparatus

Wavelength characteristics control device, gain equalizer and light...

Optical device, terminal unit, and system for wavelength division m...

Method for gain equalization, and device and system for use in carr...

Light source apparatus, optical amplifier and optical communication...

Wavelength characteristic control device, gain equalizer, and light...

Optical amplifier and fiber module for optical amplification

Polarized light synthesizing apparatus, a polarized light splitting...

Optical device

Optical repeater having redundancy

Wavelength detecting device

Optical multiplexer/demultiplexer and wavelength division multiplex...

Optical device and optical amplifier

Optical device having an optical film with an incident angle thereu...

Optical device for coupling and separating two light components

Polarization independent optical device

Polarization independent optical device

Polarization beam coupler including a splitter for producing an out...

Optical coupler ultizing prisms

Polarization coupler

Patents Applicationslast 30 patents

LIGHT COMMUNICATION DEVICE, LIGHT MODULE, AND METHOD FOR COUPLING

OPTICAL MODULE

OPTICAL MODULATING APPARATUS AND OPTICAL TRANSMITTER

Optical apparatus

Optical switch device

Wavelength characteristic variable filter, optical amplifier, and o...

Wavelength characteristic control device, gain equalizer, and light...

Optical switch

Wavelength characteristic variable apparatus

Light source apparatus, optical amplifier and optical communication...

Wavelength characteristic control device, gain equalizer, and light...