Hideaki Tsushima

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Failure isolation method and management server for failure isolation
- Patent number 10,020,982
- Issue date Jul 10, 2018
- Hitachi, Ltd.
- Atsushi Iwamura
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical receiver and optical transfer apparatus
- Patent number 8,712,255
- Issue date Apr 29, 2014
- Hitachi, Ltd.
- Hiroshi Takeuchi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical cross connect apparatus and optical transmission system
- Patent number 7,447,430
- Issue date Nov 4, 2008
- Hitachi Communications Technologies, Ltd.
- Yoshio Nogi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical switching apparatus and optical communication network system
- Patent number 7,356,257
- Issue date Apr 8, 2008
- Hitachi, Ltd.
- Shigeki Kitajima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical network
- Patent number 7,302,176
- Issue date Nov 27, 2007
- Hitachi, Ltd.
- Shinji Sakano
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical switching apparatus, optical transmission system and method...
- Patent number 7,206,475
- Issue date Apr 17, 2007
- Hitachi, Ltd.
- Sunao Kakizaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission apparatus and optical systems
- Patent number 7,194,205
- Issue date Mar 20, 2007
- Hitachi, Ltd.
- Hideaki Tsushima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical one-to-one protection switching apparatus
- Patent number 6,975,811
- Issue date Dec 13, 2005
- Hitachi, Ltd.
- Sunao Kakizaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical switching equipment, optical transport network, and methods...
- Patent number 6,970,614
- Issue date Nov 29, 2005
- Hitachi, Ltd.
- Hideaki Tsushima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical switching apparatus and optical communication network system
- Patent number 6,933,852
- Issue date Aug 23, 2005
- Hitachi, Ltd.
- Shigeki Kitajima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical switching apparatus, optical transmission system and method...
- Patent number 6,839,480
- Issue date Jan 4, 2005
- Hitachi, Ltd.
- Sunao Kakizaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical switching apparatus, optical transmission system and method...
- Patent number 6,778,725
- Issue date Aug 17, 2004
- Hitachi, Ltd.
- Sunao Kakizaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission apparatus and optical systems
- Patent number 6,731,874
- Issue date May 4, 2004
- Hitachi, Ltd.
- Hideaki Tsushima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical switch
- Patent number 6,577,784
- Issue date Jun 10, 2003
- Hitachi, Ltd.
- Masaya Horino
- G02 - OPTICS
Information Patent Grant
Optical switching device and optical switching method
- Patent number 6,463,191
- Issue date Oct 8, 2002
- Hitachi, Ltd.
- Hideaki Tsushima
- G02 - OPTICS
Information Patent Grant
Optical signal switching apparatus
- Patent number 6,434,286
- Issue date Aug 13, 2002
- Hitachi, Ltd.
- Yukio Hayashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission apparatus and optical systems
- Patent number 6,424,445
- Issue date Jul 23, 2002
- Hitachi, Ltd.
- Hideaki Tsushima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and system for reducing optical surge
- Patent number 6,341,032
- Issue date Jan 22, 2002
- Hitachi, Ltd.
- Yasuyuki Fukashiro
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical signal switching apparatus
- Patent number 6,334,009
- Issue date Dec 25, 2001
- Hitachi, Ltd.
- Yasuyuki Fukashiro
- G02 - OPTICS
Information Patent Grant
Fault restoration control method and it's apparatus in a co...
- Patent number 6,304,346
- Issue date Oct 16, 2001
- Hitachi, Ltd.
- Yasushi Sawada
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical signal switching apparatus
- Patent number 6,229,932
- Issue date May 8, 2001
- Hitachi, Ltd.
- Yasuyuki Fukashiro
- G02 - OPTICS
Information Patent Grant
WDM network with control wavelength
- Patent number 5,864,414
- Issue date Jan 26, 1999
- British Telecommunications public limited company
- Peter E. Barnsley
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Wavelength division optical signalling network apparatus and method
- Patent number 5,600,466
- Issue date Feb 4, 1997
- British Telecommunications public limited company
- Hideaki Tsushima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical fiber transmission system and supervision method of the same
- Patent number 5,500,756
- Issue date Mar 19, 1996
- Hitachi, Ltd.
- Hideaki Tsushima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical frequency division multiplexing transmission system
- Patent number 5,408,349
- Issue date Apr 18, 1995
- Hitachi, Ltd.
- Hideaki Tsushima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Frequency separation stabilization method for optical heterodyne or...
- Patent number 5,396,361
- Issue date Mar 7, 1995
- Hitachi, Ltd.
- Shinya Sasaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Homodyne optical receiver equipment
- Patent number 5,323,258
- Issue date Jun 21, 1994
- Hitachi, Ltd.
- Hideaki Tsushima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical frequency division multiplexing transmitter and optical fre...
- Patent number 5,305,134
- Issue date Apr 19, 1994
- Hitachi, Ltd.
- Hideaki Tsushima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmitter, optical receiver and optical transmission appa...
- Patent number 5,274,490
- Issue date Dec 28, 1993
- Hitachi, Ltd.
- Hideaki Tsushima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical tuning method and apparatus suitable for selective receptio...
- Patent number 5,144,467
- Issue date Sep 1, 1992
- Hitachi, Ltd.
- Shigeki Kitajima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
FAILURE ISOLATION METHOD AND MANAGEMENT SERVER FOR FAILURE ISOLATION
- Publication number 20170099179
- Publication date Apr 6, 2017
- Hitachi, Ltd
- Atsushi IWAMURA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL RECEIVER AND OPTICAL TRANSFER APPARATUS
- Publication number 20110293270
- Publication date Dec 1, 2011
- Hitachi, Ltd.
- Hiroshi Takeuchi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical cross connect apparatus and optical transmission system
- Publication number 20060018656
- Publication date Jan 26, 2006
- Yoshio Nogi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical switching apparatus and optical communication network system
- Publication number 20050281556
- Publication date Dec 22, 2005
- Hitachi, Ltd
- Shigeki Kitajima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical switching apparatus, optical transmission system and method...
- Publication number 20050031346
- Publication date Feb 10, 2005
- Hitachi, Ltd
- Sunao Kakizaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical network
- Publication number 20040213564
- Publication date Oct 28, 2004
- Shinji Sakano
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical transmission apparatus and optical systems
- Publication number 20040179839
- Publication date Sep 16, 2004
- Hideaki Tsushima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Wavelength tunable optical transmitter, optical transponder and opt...
- Publication number 20040131366
- Publication date Jul 8, 2004
- Hideaki Tsushima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical switching apparatus, optical transmission system and method...
- Publication number 20040081460
- Publication date Apr 29, 2004
- Hitachi, Ltd
- Sunao Kakizaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical switching apparatus and optical communication network system
- Publication number 20030128979
- Publication date Jul 10, 2003
- Shigeki Kitajima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical switching equipment, optical transport network, and methods...
- Publication number 20030118272
- Publication date Jun 26, 2003
- Hideaki Tsushima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical transmission apparatus and optical systems
- Publication number 20020176142
- Publication date Nov 28, 2002
- Hideaki Tsushima
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Optical Switch
- Publication number 20020003921
- Publication date Jan 10, 2002
- Masaya Horino
- G02 - OPTICS
Information Patent Application
Optical signal switching apparatus
- Publication number 20010046344
- Publication date Nov 29, 2001
- Yuki Hayashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Protection switching apparatus for 1 + 1 optical transmission lines
- Publication number 20010046074
- Publication date Nov 29, 2001
- Sunao Kakizaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical network
- Publication number 20010026384
- Publication date Oct 4, 2001
- Shinji Sakano
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Hideaki Tsushima

Person

Patents Grantslast 30 patents

Failure isolation method and management server for failure isolation

Optical receiver and optical transfer apparatus

Optical cross connect apparatus and optical transmission system

Optical switching apparatus and optical communication network system

Optical network

Optical switching apparatus, optical transmission system and method...

Optical transmission apparatus and optical systems

Optical one-to-one protection switching apparatus

Optical switching equipment, optical transport network, and methods...

Optical switching apparatus and optical communication network system

Optical switching apparatus, optical transmission system and method...

Optical switching apparatus, optical transmission system and method...

Optical transmission apparatus and optical systems

Optical switch

Optical switching device and optical switching method

Optical signal switching apparatus

Optical transmission apparatus and optical systems

Method and system for reducing optical surge

Optical signal switching apparatus

Fault restoration control method and it&#x00027;s apparatus in a co...

Optical signal switching apparatus

WDM network with control wavelength

Wavelength division optical signalling network apparatus and method

Optical fiber transmission system and supervision method of the same

Optical frequency division multiplexing transmission system

Frequency separation stabilization method for optical heterodyne or...

Homodyne optical receiver equipment

Optical frequency division multiplexing transmitter and optical fre...

Optical transmitter, optical receiver and optical transmission appa...

Optical tuning method and apparatus suitable for selective receptio...

Patents Applicationslast 30 patents

FAILURE ISOLATION METHOD AND MANAGEMENT SERVER FOR FAILURE ISOLATION

OPTICAL RECEIVER AND OPTICAL TRANSFER APPARATUS

Optical cross connect apparatus and optical transmission system

Optical switching apparatus and optical communication network system

Optical switching apparatus, optical transmission system and method...

Optical network

Optical transmission apparatus and optical systems

Wavelength tunable optical transmitter, optical transponder and opt...

Optical switching apparatus, optical transmission system and method...

Optical switching apparatus and optical communication network system

Optical switching equipment, optical transport network, and methods...

Optical transmission apparatus and optical systems

Optical Switch

Optical signal switching apparatus

Protection switching apparatus for 1 + 1 optical transmission lines

Optical network

Fault restoration control method and it's apparatus in a co...