Katsuhiro Shirai

Person

Kawasaki, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Transmission device, transmission system, and transmission method
- Patent number 9,755,756
- Issue date Sep 5, 2017
- Fujitsu Limited
- Katsuhiro Shirai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission system and noise suppression method
- Patent number 9,197,347
- Issue date Nov 24, 2015
- Fujitsu Limited
- Mineshi Nakashima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method of switching optical transport network and node device
- Patent number 8,965,197
- Issue date Feb 24, 2015
- Fujitsu Limited
- Katsuhiro Shirai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Communication apparatus and path setting control method
- Patent number 8,681,785
- Issue date Mar 25, 2014
- Fujitsu Limited
- Katsuhiro Shirai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Communication device, system and method to form communication route
- Patent number 8,320,278
- Issue date Nov 27, 2012
- Fujitsu Limited
- Koji Takeguchi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Network connection device and signal processing method in the netwo...
- Patent number 8,228,788
- Issue date Jul 24, 2012
- Fujitsu Limited
- Katsuhiro Shirai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmitting apparatus and optical repeating apparatus
- Patent number 6,924,927
- Issue date Aug 2, 2005
- Fujitsu Limited
- Katsuhiro Shirai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmitting apparatus and optical repeating apparatus
- Patent number 6,661,947
- Issue date Dec 9, 2003
- Fujitsu Limited
- Katsuhiro Shirai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Wavelength division multiplex optical transmission apparatus
- Patent number 6,169,615
- Issue date Jan 2, 2001
- Fujitsu Limited
- Katsuhiro Shirai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical bidirectional transmission system and method having transmi...
- Patent number 5,905,585
- Issue date May 18, 1999
- Fujitsu Limited
- Katsuhiro Shirai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Transmission device connected to optical transmission line
- Patent number 5,861,974
- Issue date Jan 19, 1999
- Fujitsu Limited
- Katsuhiro Shirai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical line switch device enabling connection of non-doubled optic...
- Patent number 5,760,936
- Issue date Jun 2, 1998
- Fujitsu Limited
- Katsuhiro Shirai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
TRANSMISSION DEVICE, TRANSMISSION SYSTEM, AND TRANSMISSION METHOD
- Publication number 20150381280
- Publication date Dec 31, 2015
- Fujitsu Limited
- Katsuhiro SHIRAI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL TRANSMISSION SYSTEM AND NOISE SUPPRESSION METHOD
- Publication number 20130071104
- Publication date Mar 21, 2013
- Fujitsu Limited
- Mineshi Nakashima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD OF SWITCHING OPTICAL TRANSPORT NETWORK AND NODE DEVICE
- Publication number 20120263452
- Publication date Oct 18, 2012
- Fujitsu Limited
- Katsuhiro SHIRAI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
COMMUNICATION DEVICE, SYSTEM AND METHOD TO FORM COMMUNICATION ROUTE
- Publication number 20100165987
- Publication date Jul 1, 2010
- FUJITSU LIMITED
- Koji Takeguchi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
COMMUNICATION APPARATUS AND PATH SETTING CONTROL METHOD
- Publication number 20100118872
- Publication date May 13, 2010
- FUJITSU LIMITED
- Katsuhiro SHIRAI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
NETWORK CONNECTION DEVICE AND SIGNAL PROCESSING METHOD IN THE NETWO...
- Publication number 20090245782
- Publication date Oct 1, 2009
- FUJITSU LIMITED
- Katsuhiro Shirai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical transmitting apparatus and optical repeating apparatus
- Publication number 20040032645
- Publication date Feb 19, 2004
- FUJITSU LIMITED
- Katsuhiro Shirai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical transmitting apparatus and optical repeating apparatus
- Publication number 20020126952
- Publication date Sep 12, 2002
- FUJITSU LIMITED
- Katsuhiro Shirai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Katsuhiro Shirai

Person

Patents Grantslast 30 patents

Transmission device, transmission system, and transmission method

Optical transmission system and noise suppression method

Method of switching optical transport network and node device

Communication apparatus and path setting control method

Communication device, system and method to form communication route

Network connection device and signal processing method in the netwo...

Optical transmitting apparatus and optical repeating apparatus

Optical transmitting apparatus and optical repeating apparatus

Wavelength division multiplex optical transmission apparatus

Optical bidirectional transmission system and method having transmi...

Transmission device connected to optical transmission line

Optical line switch device enabling connection of non-doubled optic...

Patents Applicationslast 30 patents

TRANSMISSION DEVICE, TRANSMISSION SYSTEM, AND TRANSMISSION METHOD

OPTICAL TRANSMISSION SYSTEM AND NOISE SUPPRESSION METHOD

METHOD OF SWITCHING OPTICAL TRANSPORT NETWORK AND NODE DEVICE

COMMUNICATION DEVICE, SYSTEM AND METHOD TO FORM COMMUNICATION ROUTE

COMMUNICATION APPARATUS AND PATH SETTING CONTROL METHOD

NETWORK CONNECTION DEVICE AND SIGNAL PROCESSING METHOD IN THE NETWO...

Optical transmitting apparatus and optical repeating apparatus

Optical transmitting apparatus and optical repeating apparatus