Hiroaki Tomofuji

Person

Kawasaki-shi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Optical transceiving apparatus, optical transmitting method, and op...
- Patent number 10,044,463
- Issue date Aug 7, 2018
- Fujitsu Limited
- Noriaki Mizuguchi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transceiving apparatus, optical transmitting method, and op...
- Patent number 9,537,570
- Issue date Jan 3, 2017
- Fujitsu Limited
- Noriaki Mizuguchi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Transmission device, transmission system, and method for adjusting...
- Patent number 9,124,382
- Issue date Sep 1, 2015
- Fujitsu Limited
- Kenichi Kaburagi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical communication node and optical network system
- Patent number 7,756,416
- Issue date Jul 13, 2010
- Fujitsu Limited
- Hiroaki Tomofuji
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method of upgrading optical node, and an optical node apparatus
- Patent number 7,650,072
- Issue date Jan 19, 2010
- Fujitsu Limited
- Miki Onaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method of upgrading optical node, and an optical node apparatus
- Patent number 7,522,839
- Issue date Apr 21, 2009
- Fujitsu Limited
- Miki Onaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission system with automatic signal level adjustment...
- Patent number 7,509,055
- Issue date Mar 24, 2009
- Fujitsu Limited
- Hiroaki Tomofuji
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical-level control method, optical-level control apparatus and w...
- Patent number 7,466,478
- Issue date Dec 16, 2008
- Fujitsu Limited
- Takuji Maeda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical node device and system including the device
- Patent number 7,433,600
- Issue date Oct 7, 2008
- Fujitsu Limited
- Toru Katagiri
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical signal level control apparatus
- Patent number 7,394,951
- Issue date Jul 1, 2008
- Fujitsu Limited
- Takuji Maeda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission system with automatic signal level adjustment...
- Patent number 7,343,102
- Issue date Mar 11, 2008
- Fujitsu Limited
- Hiroaki Tomofuji
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method for switching transmission route, and optical transmission d...
- Patent number 7,286,758
- Issue date Oct 23, 2007
- Fujitsu Limited
- Yuji Shimada
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Multiplex optical communication system
- Patent number 7,254,334
- Issue date Aug 7, 2007
- Fujitsu Limited
- Hiroaki Tomofuji
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical communication apparatus, system, and method that properly c...
- Patent number 7,200,333
- Issue date Apr 3, 2007
- Fujitsu Limited
- Toru Katagiri
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Wavelength division multiplexing optical communication system
- Patent number 7,088,922
- Issue date Aug 8, 2006
- Fujitsu Limited
- Hiroaki Tomofuji
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical device and wavelength division multiplexing communication s...
- Patent number 7,062,173
- Issue date Jun 13, 2006
- Fujitsu Limited
- Hiroaki Tomofuji
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission network, optical transmission apparatus, dispe...
- Patent number 6,987,903
- Issue date Jan 17, 2006
- Fujitsu Limited
- Ichiro Nakajima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplifier amplifying wavelength multiplexed light, and wave...
- Patent number 6,903,324
- Issue date Jun 7, 2005
- Fujitsu Limited
- Hiroaki Tomofuji
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Timing circuit
- Patent number 6,850,581
- Issue date Feb 1, 2005
- Fujitsu Limited
- Hiroaki Tomofuji
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplifying apparatus and optical communication system
- Patent number 6,839,162
- Issue date Jan 4, 2005
- Fujitsu Limited
- Motoyoshi Sekiya
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for chromatic dispersion equalization
- Patent number 6,662,317
- Issue date Dec 9, 2003
- Fujitsu Limited
- Hiroaki Tomofuji
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for measuring optical signal-to-noise ratio, a...
- Patent number 6,654,561
- Issue date Nov 25, 2003
- Fujitsu Limited
- Takafumi Terahara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Wavelength division multiplexing optical communication system and o...
- Patent number 6,639,716
- Issue date Oct 28, 2003
- Fujitsu Limited
- Hiroaki Tomofuji
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Multiplex optical communication system
- Patent number 6,600,584
- Issue date Jul 29, 2003
- Fujitsu Limited
- Hiroaki Tomofuji
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplifying apparatus, optical amplifying method, and optica...
- Patent number 6,570,703
- Issue date May 27, 2003
- Fujitsu Limited
- Makoto Murakami
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Timing circuit
- Patent number 6,496,552
- Issue date Dec 17, 2002
- Fujitsu Limited
- Hiroaki Tomofuji
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplifier
- Patent number 6,483,636
- Issue date Nov 19, 2002
- Fujitsu Limited
- Yasushi Sugaya
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplifying apparatus, wide-band optical amplifying apparatu...
- Patent number 6,411,429
- Issue date Jun 25, 2002
- Fujitsu Limited
- Hiroaki Tomofuji
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Multiplex optical communication system
- Patent number 6,348,987
- Issue date Feb 19, 2002
- Fujitsu Limited
- Hiroaki Tomofuji
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission system, optical multiplexing transmission syst...
- Patent number 5,991,477
- Issue date Nov 23, 1999
- Fujitsu Limited
- George Ishikawa
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL TRANSCEIVING APPARATUS, OPTICAL TRANSMITTING METHOD, AND OP...
- Publication number 20170005748
- Publication date Jan 5, 2017
- Fujitsu Limited
- Noriaki MIZUGUCHI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
TRANSMISSION DEVICE, TRANSMISSION SYSTEM, AND METHOD FOR ADJUSTING...
- Publication number 20140161448
- Publication date Jun 12, 2014
- Fujitsu Limited
- Kenichi Kaburagi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL TRANSCEIVING APPARATUS, OPTICAL TRANSMITTING METHOD, AND OP...
- Publication number 20130259479
- Publication date Oct 3, 2013
- Fujitsu Limited
- Noriaki MIZUGUCHI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD OF UPGRADING OPTICAL NODE, AND AN OPTICAL NODE APPARATUS
- Publication number 20090226167
- Publication date Sep 10, 2009
- FUJITSU LIMITED
- Miki Onaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical transmission system with automatic signal level adjustment...
- Publication number 20080159753
- Publication date Jul 3, 2008
- FUJITSU LIMITED
- Hiroaki Tomofuji
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method of upgrading optical node, and an optical node apparatus
- Publication number 20080002978
- Publication date Jan 3, 2008
- Miki Onaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method for switching transmission route, and optical transmission d...
- Publication number 20060188253
- Publication date Aug 24, 2006
- Yuji Shimada
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical transmission network, optical transmission apparatus, dispe...
- Publication number 20050175279
- Publication date Aug 11, 2005
- FUJITSU LIMITED
- Ichiro Nakajima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical-level control method, optical-level control apparatus and w...
- Publication number 20050168806
- Publication date Aug 4, 2005
- FUJITSU LIMITED
- Takuji Maeda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical transmission system with automatic signal level adjustment...
- Publication number 20050158057
- Publication date Jul 21, 2005
- FUJITSU LIMITED
- Hiroaki Tomofuji
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical transmission apparatus and an optical wavelength multiplex...
- Publication number 20040184809
- Publication date Sep 23, 2004
- Fujitsu Limited
- Hideyuki Miyata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Apparatus for compensating for dispersion and wavelength division m...
- Publication number 20040161241
- Publication date Aug 19, 2004
- Hiroaki Tomofuji
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Multiplex optical communication system
- Publication number 20040001712
- Publication date Jan 1, 2004
- Hiroaki Tomofuji
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical communication apparatus, system, and method that properly c...
- Publication number 20040001715
- Publication date Jan 1, 2004
- FUJITSU LIMITED
- Toru Katagiri
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical ring network system having a plurality of node apparatuses...
- Publication number 20030228148
- Publication date Dec 11, 2003
- FUJITSU LIMITED
- Hideyuki Miyata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical communication node and optical network system
- Publication number 20030223745
- Publication date Dec 4, 2003
- FUJITSU LIMITED
- Hiroaki Tomofuji
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical signal level control apparatus
- Publication number 20030223728
- Publication date Dec 4, 2003
- FUJITSU LIMITED
- Takuji Maeda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Wavelength division multiplexing optical communication system
- Publication number 20030215233
- Publication date Nov 20, 2003
- FUJITSU LIMITED
- Hiroaki Tomofuji
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD AND APPARATUS FOR CHROMATIC DISPERSION EQUALIZATION
- Publication number 20030163771
- Publication date Aug 28, 2003
- Hiroaki Tomofuji
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical amplifier
- Publication number 20030106990
- Publication date Jun 12, 2003
- FUJITSU LIMITED
- Hiroaki Tomofuji
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Timing circuit
- Publication number 20030039328
- Publication date Feb 27, 2003
- FUJITSU LIMITED
- Hiroaki Tomofuji
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical device and wavelength division multiplexing communication s...
- Publication number 20020149818
- Publication date Oct 17, 2002
- FUJITSU LIMITED
- Hiroaki Tomofuji
- G02 - OPTICS
Information Patent Application
Optical node device and system including the device
- Publication number 20020093707
- Publication date Jul 18, 2002
- FUJITSU LIMITED
- Toru Katagiri
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
TIMING CIRCUIT
- Publication number 20020067786
- Publication date Jun 6, 2002
- HIROAKI TOMOFUJI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical amplifying apparatus, optical amplifying method, and optica...
- Publication number 20020039226
- Publication date Apr 4, 2002
- FUJITSU LIMITED
- Makoto Murakami
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Multiplex optical communication system
- Publication number 20020030876
- Publication date Mar 14, 2002
- Hiroaki Tomofuji
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical amplifying apparatus, complex optical amplifying apparatus,...
- Publication number 20020024723
- Publication date Feb 28, 2002
- FUJITSU LIMITED
- Motoyoshi Sekiya
- H01 - BASIC ELECTRIC ELEMENTS

Hiroaki Tomofuji

Person

Patents Grantslast 30 patents

Optical transceiving apparatus, optical transmitting method, and op...

Optical transceiving apparatus, optical transmitting method, and op...

Transmission device, transmission system, and method for adjusting...

Optical communication node and optical network system

Method of upgrading optical node, and an optical node apparatus

Method of upgrading optical node, and an optical node apparatus

Optical transmission system with automatic signal level adjustment...

Optical-level control method, optical-level control apparatus and w...

Optical node device and system including the device

Optical signal level control apparatus

Optical transmission system with automatic signal level adjustment...

Method for switching transmission route, and optical transmission d...

Multiplex optical communication system

Optical communication apparatus, system, and method that properly c...

Wavelength division multiplexing optical communication system

Optical device and wavelength division multiplexing communication s...

Optical transmission network, optical transmission apparatus, dispe...

Optical amplifier amplifying wavelength multiplexed light, and wave...

Timing circuit

Optical amplifying apparatus and optical communication system

Method and apparatus for chromatic dispersion equalization

Method and apparatus for measuring optical signal-to-noise ratio, a...

Wavelength division multiplexing optical communication system and o...

Multiplex optical communication system

Optical amplifying apparatus, optical amplifying method, and optica...

Timing circuit

Optical amplifier

Optical amplifying apparatus, wide-band optical amplifying apparatu...

Multiplex optical communication system

Optical transmission system, optical multiplexing transmission syst...

Patents Applicationslast 30 patents

OPTICAL TRANSCEIVING APPARATUS, OPTICAL TRANSMITTING METHOD, AND OP...

TRANSMISSION DEVICE, TRANSMISSION SYSTEM, AND METHOD FOR ADJUSTING...

OPTICAL TRANSCEIVING APPARATUS, OPTICAL TRANSMITTING METHOD, AND OP...

METHOD OF UPGRADING OPTICAL NODE, AND AN OPTICAL NODE APPARATUS

Optical transmission system with automatic signal level adjustment...

Method of upgrading optical node, and an optical node apparatus

Method for switching transmission route, and optical transmission d...

Optical transmission network, optical transmission apparatus, dispe...

Optical-level control method, optical-level control apparatus and w...

Optical transmission system with automatic signal level adjustment...

Optical transmission apparatus and an optical wavelength multiplex...

Apparatus for compensating for dispersion and wavelength division m...

Multiplex optical communication system

Optical communication apparatus, system, and method that properly c...

Optical ring network system having a plurality of node apparatuses...

Optical communication node and optical network system

Optical signal level control apparatus

Wavelength division multiplexing optical communication system

METHOD AND APPARATUS FOR CHROMATIC DISPERSION EQUALIZATION

Optical amplifier

Timing circuit

Optical device and wavelength division multiplexing communication s...

Optical node device and system including the device

TIMING CIRCUIT

Optical amplifying apparatus, optical amplifying method, and optica...

Multiplex optical communication system

Optical amplifying apparatus, complex optical amplifying apparatus,...