Hidehiko Takara

Person

Yokosuka-shi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Optical amplification system and optical amplification method
- Patent number 11,108,208
- Issue date Aug 31, 2021
- Nippon Telegraph and Telephone Corporation
- Takuya Oda
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Transmission quality estimation system, transmission quality estima...
- Patent number 10,686,520
- Issue date Jun 16, 2020
- Nippon Telegraph and Telephone Corporation
- Takuya Oda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Transmission quality estimation system, transmission quality estima...
- Patent number 10,637,568
- Issue date Apr 28, 2020
- Nippon Telegraph and Telephone Corporation
- Takuya Oda
- G02 - OPTICS
Information Patent Grant
Communication system and fault detection method
- Patent number 10,615,868
- Issue date Apr 7, 2020
- Nippon Telegraph and Telephone Corporation
- Takuya Oda
- G02 - OPTICS
Information Patent Grant
Communication system and connector
- Patent number 10,527,781
- Issue date Jan 7, 2020
- Nippon Telegraph and Telephone Corporation
- Takuya Oda
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Communication system and fault location specifying method
- Patent number 10,511,381
- Issue date Dec 17, 2019
- Nippon Telegraph and Telephone Corporation
- Takuya Oda
- G02 - OPTICS
Information Patent Grant
Multi-flow optical transceiver, multi-flow optical transponder and...
- Patent number 9,762,982
- Issue date Sep 12, 2017
- Nippon Telegraph and Telephone Corporation
- Kazushige Yonenaga
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical communication apparatus, optical route switching apparatus...
- Patent number 9,479,282
- Issue date Oct 25, 2016
- Nippon Telegraph and Telephone Corporation
- Masahiko Jinno
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Multi-flow optical transceiver, multi-flow optical transponder and...
- Patent number 9,326,049
- Issue date Apr 26, 2016
- Nippon Telegraph and Telephone Corporation
- Kazushige Yonenaga
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplifier
- Patent number 9,065,243
- Issue date Jun 23, 2015
- Nippon Telegraph and Telephone Corporation
- Masaki Asobe
- G02 - OPTICS
Information Patent Grant
Bandwidth variable communication method, bandwidth variable communi...
- Patent number 8,964,581
- Issue date Feb 24, 2015
- Nippon Telegraph and Telephone Corporation
- Hidehiko Takara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Bandwidth variable communication apparatus and bandwidth variable c...
- Patent number 8,526,438
- Issue date Sep 3, 2013
- Nippon Telegraph and Telephone Corporation
- Masahiko Jinno
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical signal quality monitoring circuit and optical signal qualit...
- Patent number 7,684,697
- Issue date Mar 23, 2010
- Nippon Telegraph and Telephone Corporation
- Ippei Shake
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Dispersion monitoring method and apparatus and dispersion slope tem...
- Patent number 7,668,459
- Issue date Feb 23, 2010
- Nippon Telegraph and Telephone Corporation
- Tetsuro Inui
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and system for determining origin of optical signal quality...
- Patent number 7,200,328
- Issue date Apr 3, 2007
- Nippon Telegraph and Telephone Corporation
- Ippei Shake
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Data signal quality evaluation method and apparatus using high spee...
- Patent number 7,190,752
- Issue date Mar 13, 2007
- Nippon Telegraph and Telephone Corporation
- Ippei Shake
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical clock phase-locked loop circuit
- Patent number 7,151,897
- Issue date Dec 19, 2006
- Nippon Telegraph and Telephone Corporation
- Takuya Ohara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical wavelength division multiplex signal monitoring apparatus
- Patent number 7,079,765
- Issue date Jul 18, 2006
- Nippon Telegraph and Telephone Corporation
- Ippei Shake
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Ultrahigh-speed clock extraction circuit
- Patent number 7,024,122
- Issue date Apr 4, 2006
- Nippon Telegraph and Telephone Corporation
- Kentaro Uchiyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical modulation/multiplexing circuit
- Patent number 6,842,565
- Issue date Jan 11, 2005
- Nippon Telegraph and Telephone Corporation
- Takuya Ohara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical sampling waveform measuring apparatus aiming at achieving w...
- Patent number 6,720,548
- Issue date Apr 13, 2004
- Anritsu Corporation
- Akihito Otani
- G01 - MEASURING TESTING
Information Patent Grant
Sum frequency light generation method and sum frequency light gener...
- Patent number 6,697,395
- Issue date Feb 24, 2004
- Anritsu Corporation
- Akihito Otani
- G02 - OPTICS
Information Patent Grant
Optical fiber
- Patent number 6,671,444
- Issue date Dec 30, 2003
- The Furukawa Electric Co., Ltd.
- Shinichi Arai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
System for monitoring quality of optical signals having different b...
- Patent number 6,396,601
- Issue date May 28, 2002
- Nippon Telegraph and Telephone Corporation
- Hidehiko Takara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Complementary optical sampling waveform measuring apparatus and pol...
- Patent number 6,154,309
- Issue date Nov 28, 2000
- Anritsu Corporation
- Akihito Otani
- G02 - OPTICS
Information Patent Grant
Multiple-channel all-optical TDM-WDM converter and multiple-channel...
- Patent number 6,023,360
- Issue date Feb 8, 2000
- Nippon Telegraph & Telephone Corporation
- Toshio Morioka
- G02 - OPTICS
Information Patent Grant
White optical pulse source and applications
- Patent number 5,999,548
- Issue date Dec 7, 1999
- Nippon Telegraph and Telephone Corporation
- Kunihiko Mori
- G02 - OPTICS
Information Patent Grant
Wavelength dispersion measuring apparatus and polarization dispersi...
- Patent number 5,995,228
- Issue date Nov 30, 1999
- Anritsu Corporation
- Akihito Otani
- G01 - MEASURING TESTING
Information Patent Grant
Optical fiber and light source apparatus
- Patent number 5,960,146
- Issue date Sep 28, 1999
- Sumitomo Electric Industries, Ltd.
- Toshiaki Okuno
- G02 - OPTICS
Information Patent Grant
Mode-locked laser stabilizing method and apparatus
- Patent number 5,646,774
- Issue date Jul 8, 1997
- Nippon Telegraph & Telephone Corporation
- Hidehiko Takara
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
COMMUNICATION SYSTEM AND CONNECTOR
- Publication number 20180375579
- Publication date Dec 27, 2018
- Nippon Telegraph and Telephone Corporation
- Takuya ODA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL AMPLIFICATION SYSTEM AND OPTICAL AMPLIFICATION METHOD
- Publication number 20180358773
- Publication date Dec 13, 2018
- Nippon Telegraph and Telephone Corporation
- Takuya ODA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
COMMUNICATION SYSTEM AND FAULT DETECTION METHOD
- Publication number 20180359024
- Publication date Dec 13, 2018
- Nippon Telegraph and Telephone Corporation
- Takuya ODA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
COMMUNICATION SYSTEM AND FAULT LOCATION SPECIFYING METHOD
- Publication number 20180351639
- Publication date Dec 6, 2018
- Nippon Telegraph and Telephone Corporation
- Takuya ODA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
NODE AND OPTICAL POWER SUPPLY SYSTEM
- Publication number 20180343067
- Publication date Nov 29, 2018
- Nippon Telegraph and Telephone Corporation
- Takuya ODA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
COMMUNICATION SYSTEM AND CONNECTOR
- Publication number 20180341060
- Publication date Nov 29, 2018
- Nippon Telegraph and Telephone Corporation
- Takuya ODA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
TRANSMISSION QUALITY ESTIMATION SYSTEM, TRANSMISSION QUALITY ESTIMA...
- Publication number 20180337726
- Publication date Nov 22, 2018
- Nippon Telegraph and Telephone Corporation
- Takuya ODA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
MULTI-FLOW OPTICAL TRANSCEIVER, MULTI-FLOW OPTICAL TRANSPONDER AND...
- Publication number 20160205451
- Publication date Jul 14, 2016
- Nippon Telegraph and Telephone Corporation
- Kazushige YONENAGA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL AMPLIFIER DEVICE
- Publication number 20150036210
- Publication date Feb 5, 2015
- Masaki Asobe
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
OPTICAL COMMUNICATION APPARATUS, OPTICAL ROUTE SWITCHING APPARATUS...
- Publication number 20140270776
- Publication date Sep 18, 2014
- NIPPON TELEGRAPH AND TELEPHONE CORPORATION
- Masahiko Jinno
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
MULTI-FLOW OPTICAL TRANSCEIVER, MULTI-FLOW OPTICAL TRANSPONDER AND...
- Publication number 20140126905
- Publication date May 8, 2014
- Nippon Telegraph and Telephone Corporation
- Kazushige Yonenaga
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
BANDWIDTH VARIABLE COMMUNICATION METHOD, BANDWIDTH VARIABLE COMMUNI...
- Publication number 20120224851
- Publication date Sep 6, 2012
- NIPPON TELEGRAPH AND TELEPHONE CORPORATION
- Hidehiko Takara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
BANDWIDTH VARIABLE COMMUNICATION APPARATUS AND BANDWIDTH VARIABLE C...
- Publication number 20110164620
- Publication date Jul 7, 2011
- Nippon Telegraph Ans Telephone Corp.
- Masahiko Jinno
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical Signal Quality Monitoring Circuit and Optical Signal Qualit...
- Publication number 20080285970
- Publication date Nov 20, 2008
- Nippon Telegraph and Telephone Corporation
- Ippei Shake
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Dispersion monitoring method and apparatus and dispersion slope tem...
- Publication number 20070242956
- Publication date Oct 18, 2007
- Tetsuro Inui
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method and apparatus for channel extraction of optical time-divisio...
- Publication number 20040028089
- Publication date Feb 12, 2004
- Nippon Telegraph and Telephone Corporation
- Ippei Shake
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Data signal quality evaluation method and apparatus using high spee...
- Publication number 20040005000
- Publication date Jan 8, 2004
- Ippei Shake
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical modulation/multiplexing circuit
- Publication number 20030214698
- Publication date Nov 20, 2003
- Nippon Telegraph and Telephone Corporation
- Takuya Ohara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical clock phase-locked loop circuit
- Publication number 20030118349
- Publication date Jun 26, 2003
- Takuya Ohara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Ultrahigh-speed clock extraction circuit
- Publication number 20030117196
- Publication date Jun 26, 2003
- Nippon Telegraph and Telephone Corporation
- Kentaro Uchiyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method and system for determining origin of optical signal quality...
- Publication number 20030011837
- Publication date Jan 16, 2003
- Nippon Telegraph and Telephone Corporation
- Ippei Shake
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical sampling waveform measuring apparatus aiming at achieving w...
- Publication number 20020139924
- Publication date Oct 3, 2002
- Anritsu Corporation
- Akihito Otani
- G01 - MEASURING TESTING
Information Patent Application
Sum frequency light generation method and sum frequency light gener...
- Publication number 20020141459
- Publication date Oct 3, 2002
- Anritsu Corporation
- Akihito Otani
- G02 - OPTICS
Information Patent Application
Optical wavelength division multiplex signal monitoring apparatus
- Publication number 20020126352
- Publication date Sep 12, 2002
- Nippon Telegraph and Telephone Corporation
- Ippei Shake
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Hidehiko Takara

Person

Patents Grantslast 30 patents

Optical amplification system and optical amplification method

Transmission quality estimation system, transmission quality estima...

Transmission quality estimation system, transmission quality estima...

Communication system and fault detection method

Communication system and connector

Communication system and fault location specifying method

Multi-flow optical transceiver, multi-flow optical transponder and...

Optical communication apparatus, optical route switching apparatus...

Multi-flow optical transceiver, multi-flow optical transponder and...

Optical amplifier

Bandwidth variable communication method, bandwidth variable communi...

Bandwidth variable communication apparatus and bandwidth variable c...

Optical signal quality monitoring circuit and optical signal qualit...

Dispersion monitoring method and apparatus and dispersion slope tem...

Method and system for determining origin of optical signal quality...

Data signal quality evaluation method and apparatus using high spee...

Optical clock phase-locked loop circuit

Optical wavelength division multiplex signal monitoring apparatus

Ultrahigh-speed clock extraction circuit

Optical modulation/multiplexing circuit

Optical sampling waveform measuring apparatus aiming at achieving w...

Sum frequency light generation method and sum frequency light gener...

Optical fiber

System for monitoring quality of optical signals having different b...

Complementary optical sampling waveform measuring apparatus and pol...

Multiple-channel all-optical TDM-WDM converter and multiple-channel...

White optical pulse source and applications

Wavelength dispersion measuring apparatus and polarization dispersi...

Optical fiber and light source apparatus

Mode-locked laser stabilizing method and apparatus

Patents Applicationslast 30 patents

COMMUNICATION SYSTEM AND CONNECTOR

OPTICAL AMPLIFICATION SYSTEM AND OPTICAL AMPLIFICATION METHOD

COMMUNICATION SYSTEM AND FAULT DETECTION METHOD

COMMUNICATION SYSTEM AND FAULT LOCATION SPECIFYING METHOD

NODE AND OPTICAL POWER SUPPLY SYSTEM

COMMUNICATION SYSTEM AND CONNECTOR

TRANSMISSION QUALITY ESTIMATION SYSTEM, TRANSMISSION QUALITY ESTIMA...

MULTI-FLOW OPTICAL TRANSCEIVER, MULTI-FLOW OPTICAL TRANSPONDER AND...

OPTICAL AMPLIFIER DEVICE

OPTICAL COMMUNICATION APPARATUS, OPTICAL ROUTE SWITCHING APPARATUS...

MULTI-FLOW OPTICAL TRANSCEIVER, MULTI-FLOW OPTICAL TRANSPONDER AND...

BANDWIDTH VARIABLE COMMUNICATION METHOD, BANDWIDTH VARIABLE COMMUNI...

BANDWIDTH VARIABLE COMMUNICATION APPARATUS AND BANDWIDTH VARIABLE C...

Optical Signal Quality Monitoring Circuit and Optical Signal Qualit...

Dispersion monitoring method and apparatus and dispersion slope tem...

Method and apparatus for channel extraction of optical time-divisio...

Data signal quality evaluation method and apparatus using high spee...

Optical modulation/multiplexing circuit

Optical clock phase-locked loop circuit

Ultrahigh-speed clock extraction circuit

Method and system for determining origin of optical signal quality...

Optical sampling waveform measuring apparatus aiming at achieving w...

Sum frequency light generation method and sum frequency light gener...

Optical wavelength division multiplex signal monitoring apparatus