Tomoyuki Yokokawa

Person

Kanagawa, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Connecting harness
- Patent number 11,209,604
- Issue date Dec 28, 2021
- Sumitomo Electric Industries, Ltd.
- Tomoyuki Yokokawa
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Termination unit
- Patent number 11,073,671
- Issue date Jul 27, 2021
- SEI Optifrontier Co., Ltd.
- Kazuya Masuda
- G02 - OPTICS
Information Patent Grant
Optical connector, detaching jig, and cap
- Patent number 10,677,996
- Issue date Jun 9, 2020
- Sei Optifrontier Co., Ltd.
- Yohei Aoshima
- G02 - OPTICS
Information Patent Grant
Termination unit and optical fiber exchange method using the same
- Patent number 10,591,693
- Issue date Mar 17, 2020
- Sumitomo Electric Industries, Ltd.
- Takayasu Yamauchi
- G02 - OPTICS
Information Patent Grant
Housing for an optical fiber connector
- Patent number D828811
- Issue date Sep 18, 2018
- Sei Optifrontier Co., Ltd.
- Yohei Aoshima
- D13 - Equipment for production, distribution, or transformation of energy
Information Patent Grant
Pull tab for an optical fiber connector
- Patent number D828812
- Issue date Sep 18, 2018
- Sei Optifrontier Co., Ltd.
- Yohei Aoshima
- D13 - Equipment for production, distribution, or transformation of energy
Information Patent Grant
Glass tube processing apparatus
- Patent number 8,024,945
- Issue date Sep 27, 2011
- Sumitomo Electric Industries, Ltd.
- Tetsuya Nakanishi
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Glass tube processing method
- Patent number 8,015,845
- Issue date Sep 13, 2011
- Sumitomo Electric Industries, Ltd.
- Tetsuya Nakanishi
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Glass tube processing method, apparatus and glass tube
- Patent number 7,637,125
- Issue date Dec 29, 2009
- Sumitomo Electric Industries, Ltd.
- Tetsuya Nakanishi
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Manufacturing method of optical fiber preform, manufacturing method...
- Patent number 7,376,316
- Issue date May 20, 2008
- Sumitomo Electric Industries, Ltd.
- Takashi Sasaki
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Optical cable
- Patent number 7,321,709
- Issue date Jan 22, 2008
- Sumitomo Electric Industries, Ltd.
- Tomoyuki Yokokawa
- G02 - OPTICS
Information Patent Grant
Optical fiber, dispersion compensator, and optical transmission system
- Patent number 7,239,783
- Issue date Jul 3, 2007
- Sumitomo Electric Industries, Ltd.
- Yoshinori Yamamoto
- G02 - OPTICS
Information Patent Grant
Optical fiber, dispersion compensator, and optical transmission system
- Patent number 7,206,484
- Issue date Apr 17, 2007
- Sumitomo Electric Industries, Ltd.
- Yoshinori Yamamoto
- G02 - OPTICS
Information Patent Grant
Optical fiber preform producing method, optical fiber production me...
- Patent number 7,068,901
- Issue date Jun 27, 2006
- Sumitomo Electric Industries, Ltd.
- Masaaki Hirano
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Dispersion compensation unit and optical communication system
- Patent number 7,016,581
- Issue date Mar 21, 2006
- Sumitomo Electric Industries, Ltd.
- Tomoyuki Yokokawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical fiber manufacturing method and optical fiber
- Patent number 7,010,203
- Issue date Mar 7, 2006
- Sumitomo Electric Industries, Ltd.
- Tomoyuki Yokokawa
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Optical fiber cable and method of producing the same
- Patent number 6,757,465
- Issue date Jun 29, 2004
- Sumitomo Electric Industries, Ltd.
- Tomoyuki Yokokawa
- G02 - OPTICS
Information Patent Grant
Cable, and method for removing sheath at intermediate part of cable
- Patent number 6,545,222
- Issue date Apr 8, 2003
- Sumitomo Electric Industries, Ltd.
- Tomoyuki Yokokawa
- G02 - OPTICS
Information Patent Grant
Optical fiber cable
- Patent number 6,411,761
- Issue date Jun 25, 2002
- Sumitomo Electric Industries, Ltd.
- Tomoyuki Yokokawa
- G02 - OPTICS
Information Patent Grant
Optical fiber cable
- Patent number 6,229,944
- Issue date May 8, 2001
- Sumitomo Electric Industries, Ltd.
- Tomoyuki Yokokawa
- G02 - OPTICS
Information Patent Grant
Spacer type optical fiber cable
- Patent number 6,122,427
- Issue date Sep 19, 2000
- Sumitomo Electric Industries, Ltd.
- Tomoyuki Yokokawa
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
TERMINATION UNIT
- Publication number 20210055497
- Publication date Feb 25, 2021
- SEI Optifrontier Co., Ltd.
- Kazuya MASUDA
- G02 - OPTICS
Information Patent Application
CONNECTING HARNESS
- Publication number 20200341220
- Publication date Oct 29, 2020
- Sumitomo Electric Industries, Ltd.
- Tomoyuki YOKOKAWA
- G02 - OPTICS
Information Patent Application
OPTICAL CONNECTOR AND OPTICAL FIBER WITH CONNECTOR
- Publication number 20190391343
- Publication date Dec 26, 2019
- SEI Optifrontier Co., Ltd.
- Yohei AOSHIMA
- G02 - OPTICS
Information Patent Application
OPTICAL CONNECTOR AND OPTICAL FIBER WITH CONNECTOR
- Publication number 20190361177
- Publication date Nov 28, 2019
- SEI Optifrontier Co., Ltd.
- Yohei AOSHIMA
- G02 - OPTICS
Information Patent Application
OPTICAL WIRING RACK
- Publication number 20190293889
- Publication date Sep 26, 2019
- SEI Optifrontier Co., Ltd.
- Kazuya MASUDA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL CONNECTOR, DETACHING JIG, AND CAP
- Publication number 20190278029
- Publication date Sep 12, 2019
- SEI Optifrontier Co., Ltd.
- Yohei AOSHIMA
- G02 - OPTICS
Information Patent Application
TERMINATION UNIT AND OPTICAL FIBER EXCHANGE METHOD USING THE SAME
- Publication number 20190064468
- Publication date Feb 28, 2019
- Sumitomo Electric Industries, Ltd.
- Takayasu YAMAUCHI
- G02 - OPTICS
Information Patent Application
GLASS TUBE PROCESSING METHOD, APPARATUS AND GLASS TUBE
- Publication number 20100236289
- Publication date Sep 23, 2010
- Sumitomo Electric Industries, Ltd.
- Tetsuya Nakanishi
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Application
GLASS TUBE PROCESSING METHOD, APPARATUS AND GLASS TUBE
- Publication number 20100064733
- Publication date Mar 18, 2010
- Sumitomo Electric Industries, Ltd.
- Tetsuya Nakanishi
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Application
Optical cable
- Publication number 20070104429
- Publication date May 10, 2007
- Tomoyuki Yokokawa
- G02 - OPTICS
Information Patent Application
Process for producing optical fiber preform, process for producing...
- Publication number 20060204189
- Publication date Sep 14, 2006
- Takashi Sasaki
- G02 - OPTICS
Information Patent Application
Glass tube processing method, apparatus and glass tube
- Publication number 20050144983
- Publication date Jul 7, 2005
- Tetsuya Nakanishi
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Application
Optical fiber preform producing method, optical fiber production me...
- Publication number 20040247269
- Publication date Dec 9, 2004
- Masaaki Hirano
- G02 - OPTICS
Information Patent Application
Optical fiber manufactring method and optical fiber
- Publication number 20040170365
- Publication date Sep 2, 2004
- Tomoyuki Yokokawa
- G02 - OPTICS
Information Patent Application
Optical fiber, dispersion compensator, and optical transmission system
- Publication number 20040005130
- Publication date Jan 8, 2004
- SUMITOMO ELECTRIC INDUSTRIES, LTD.
- Yoshinori Yamamoto
- G02 - OPTICS
Information Patent Application
Optical fiber, dispersion compensator, and optical transmission system
- Publication number 20040001681
- Publication date Jan 1, 2004
- SUMITOMO ELECTRIC INDUSTRIES, LTD.
- Yoshinori Yamamoto
- G02 - OPTICS
Information Patent Application
Dispersion compensation unit and optical communication system
- Publication number 20030215200
- Publication date Nov 20, 2003
- SUMITOMO ELECTRIC INDUSTRIES, LTD.
- Tomoyuki Yokokawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Cable, and method for removing sheath at intermediate part of cable
- Publication number 20010043781
- Publication date Nov 22, 2001
- SUMITOMO ELECTRIC INDUSTRIES, LTD.
- Tomoyuki Yokokawa
- G02 - OPTICS

Tomoyuki Yokokawa

Person

Patents Grantslast 30 patents

Connecting harness

Termination unit

Optical connector, detaching jig, and cap

Termination unit and optical fiber exchange method using the same

Housing for an optical fiber connector

Pull tab for an optical fiber connector

Glass tube processing apparatus

Glass tube processing method

Glass tube processing method, apparatus and glass tube

Manufacturing method of optical fiber preform, manufacturing method...

Optical cable

Optical fiber, dispersion compensator, and optical transmission system

Optical fiber, dispersion compensator, and optical transmission system

Optical fiber preform producing method, optical fiber production me...

Dispersion compensation unit and optical communication system

Optical fiber manufacturing method and optical fiber

Optical fiber cable and method of producing the same

Cable, and method for removing sheath at intermediate part of cable

Optical fiber cable

Optical fiber cable

Spacer type optical fiber cable

Patents Applicationslast 30 patents

TERMINATION UNIT

CONNECTING HARNESS

OPTICAL CONNECTOR AND OPTICAL FIBER WITH CONNECTOR

OPTICAL CONNECTOR AND OPTICAL FIBER WITH CONNECTOR

OPTICAL WIRING RACK

OPTICAL CONNECTOR, DETACHING JIG, AND CAP

TERMINATION UNIT AND OPTICAL FIBER EXCHANGE METHOD USING THE SAME

GLASS TUBE PROCESSING METHOD, APPARATUS AND GLASS TUBE

GLASS TUBE PROCESSING METHOD, APPARATUS AND GLASS TUBE

Optical cable

Process for producing optical fiber preform, process for producing...

Glass tube processing method, apparatus and glass tube

Optical fiber preform producing method, optical fiber production me...

Optical fiber manufactring method and optical fiber

Optical fiber, dispersion compensator, and optical transmission system

Optical fiber, dispersion compensator, and optical transmission system

Dispersion compensation unit and optical communication system

Cable, and method for removing sheath at intermediate part of cable