Kazuo Takatsu

Person

Kawasaki-shi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Optical transfer system, control device, optical transfer method, a...
- Patent number 10,644,823
- Issue date May 5, 2020
- Fujitsu Limited
- Masahiro Yuki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical add drop multiplexer
- Patent number 9,264,167
- Issue date Feb 16, 2016
- Fujitsu Limited
- Kazuo Takatsu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission device and optical filter circuit
- Patent number 8,977,130
- Issue date Mar 10, 2015
- Fujitsu Limited
- Koji Takeguchi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical switching device, optical add device, and optical drop device
- Patent number 8,879,915
- Issue date Nov 4, 2014
- Fujitsu Limited
- Takeshi Sakamoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Reception pointer processing apparatus in SDH transmission system
- Patent number 7,359,316
- Issue date Apr 15, 2008
- Fujitsu Limited
- Kenji Fukunaga
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Frame synchronous pattern processing apparatus and frame synchronou...
- Patent number 7,151,783
- Issue date Dec 19, 2006
- Fujitsu Limited
- Yoshinori Nakamura
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Light wavelength-multiplexing systems
- Patent number 6,919,987
- Issue date Jul 19, 2005
- Fujitsu Limited
- Kazuo Takatsu
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Light wavelength-multiplexing systems
- Patent number 6,441,955
- Issue date Aug 27, 2002
- Fujitsu Limited
- Kazuo Takatsu
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Frame synchronous pattern processing apparatus and frame synchronou...
- Patent number 6,385,213
- Issue date May 7, 2002
- Fujitsu Limited
- Yoshinori Nakamura
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Path switching device for transmission apparatus
- Patent number 6,337,848
- Issue date Jan 8, 2002
- Fujitsu Limited
- Kazuo Takatsu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Reception pointer processing apparatus in SDH transmission system
- Patent number 6,118,795
- Issue date Sep 12, 2000
- Fujitsu Limited
- Kenji Fukunaga
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Repeating installation
- Patent number 6,009,076
- Issue date Dec 28, 1999
- Fujitsu Limited
- Kazuo Takatsu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Connection switching circuit for ring system
- Patent number 5,909,175
- Issue date Jun 1, 1999
- Fujitsu Limited
- Shosaku Yamasaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Different system transfer method for a ring transmission system and...
- Patent number 5,844,889
- Issue date Dec 1, 1998
- Fujitsu Limited
- Kazuo Takatsu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Add-drop multiplexer with enhancement of accessibility to signals i...
- Patent number 5,754,545
- Issue date May 19, 1998
- Fujitsu Limited
- Masahiro Shinbashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical terminal system having self-monitoring function
- Patent number 5,557,437
- Issue date Sep 17, 1996
- Fujitsu Limited
- Toshiharu Sakai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Routing system for linear add-drop multiplexer
- Patent number 5,311,501
- Issue date May 10, 1994
- Fujitsu Limited
- Kazuo Takatsu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method for phase compensation of optical regenerator equipment
- Patent number 5,172,260
- Issue date Dec 15, 1992
- Fujitsu Limited
- Kazuo Takatsu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Drop/insert channel selecting system
- Patent number 5,134,609
- Issue date Jul 28, 1992
- Fujitsu Limited
- Masakazu Mori
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL TRANSFER SYSTEM, CONTROL DEVICE, OPTICAL TRANSFER METHOD, A...
- Publication number 20190386767
- Publication date Dec 19, 2019
- Fujitsu Limited
- Masahiro YUKI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL TRANSMISSION DEVICE AND OPTICAL FILTER CIRCUIT
- Publication number 20120207477
- Publication date Aug 16, 2012
- FUJITSU LIMITED
- Koji TAKEGUCHI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL TRANSMISSION EQUIPMENT
- Publication number 20120141121
- Publication date Jun 7, 2012
- Fujitsu Limited
- Hiroyuki ITOH
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical switching device, optical add device, and optical drop device
- Publication number 20120128347
- Publication date May 24, 2012
- FUJITSU LIMITED
- Takeshi Sakamoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL ADD DROP MULTIPLEXER
- Publication number 20120002964
- Publication date Jan 5, 2012
- FUJITSU LIMITED
- Kazuo TAKATSU
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Frame synchronous pattern processing apparatus and frame synchronou...
- Publication number 20040028088
- Publication date Feb 12, 2004
- Yoshinori Nakamura
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Light wavelength-multiplexing systems
- Publication number 20030025965
- Publication date Feb 6, 2003
- FUJITSU LIMITED
- Kazuo Takatsu
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
LIGHT WAVELENGTH-MULTIPLEXING SYSTEMS
- Publication number 20020051284
- Publication date May 2, 2002
- KAZUO TAKATSU
- G06 - COMPUTING CALCULATING COUNTING

Kazuo Takatsu

Person

Patents Grantslast 30 patents

Optical transfer system, control device, optical transfer method, a...

Optical add drop multiplexer

Optical transmission device and optical filter circuit

Optical switching device, optical add device, and optical drop device

Reception pointer processing apparatus in SDH transmission system

Frame synchronous pattern processing apparatus and frame synchronou...

Light wavelength-multiplexing systems

Light wavelength-multiplexing systems

Frame synchronous pattern processing apparatus and frame synchronou...

Path switching device for transmission apparatus

Reception pointer processing apparatus in SDH transmission system

Repeating installation

Connection switching circuit for ring system

Different system transfer method for a ring transmission system and...

Add-drop multiplexer with enhancement of accessibility to signals i...

Optical terminal system having self-monitoring function

Routing system for linear add-drop multiplexer

Method for phase compensation of optical regenerator equipment

Drop/insert channel selecting system

Patents Applicationslast 30 patents

OPTICAL TRANSFER SYSTEM, CONTROL DEVICE, OPTICAL TRANSFER METHOD, A...

OPTICAL TRANSMISSION DEVICE AND OPTICAL FILTER CIRCUIT

OPTICAL TRANSMISSION EQUIPMENT

Optical switching device, optical add device, and optical drop device

OPTICAL ADD DROP MULTIPLEXER

Frame synchronous pattern processing apparatus and frame synchronou...

Light wavelength-multiplexing systems

LIGHT WAVELENGTH-MULTIPLEXING SYSTEMS