Katsuhiro Takenaga

Person

Sakura, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Multicore fiber, optical fiber cable, and optical connector
- Patent number 12,092,859
- Issue date Sep 17, 2024
- Fujikura Ltd.
- Katsuhiro Takenaga
- G02 - OPTICS
Information Patent Grant
Multicore fiber, optical fiber cable, and optical connector
- Patent number 12,092,879
- Issue date Sep 17, 2024
- Fujikura Ltd.
- Katsuhiro Takenaga
- G02 - OPTICS
Information Patent Grant
Method for aligning multicore fiber, method for manufacturing multi...
- Patent number 11,960,120
- Issue date Apr 16, 2024
- Fujikura Ltd.
- Masaki Ohzeki
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Optical fiber preform production method, optical fiber preform, and...
- Patent number 11,834,365
- Issue date Dec 5, 2023
- Fujikura Ltd.
- Yoshimichi Amma
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Multicore fiber
- Patent number 10,690,843
- Issue date Jun 23, 2020
- Fujikura Ltd.
- Yusuke Sasaki
- G02 - OPTICS
Information Patent Grant
Multicore fiber for communication
- Patent number 10,663,653
- Issue date May 26, 2020
- Fujikura Ltd.
- Katsuhiro Takenaga
- G02 - OPTICS
Information Patent Grant
Optical fiber
- Patent number 10,656,327
- Issue date May 19, 2020
- Fujikura Ltd.
- Shota Saito
- G02 - OPTICS
Information Patent Grant
Characteristic-measuring apparatus and characteristic-measuring met...
- Patent number 10,488,297
- Issue date Nov 26, 2019
- Fujikura Ltd.
- Shota Saito
- G01 - MEASURING TESTING
Information Patent Grant
Method of measuring crosstalk of multicore fiber and apparatus of m...
- Patent number 10,444,113
- Issue date Oct 15, 2019
- Fujikura Ltd.
- Shota Saito
- G02 - OPTICS
Information Patent Grant
Multicore fiber and optical cable
- Patent number 10,365,429
- Issue date Jul 30, 2019
- Fujikura Ltd.
- Shota Saito
- G02 - OPTICS
Information Patent Grant
Multi-core fiber
- Patent number 10,310,176
- Issue date Jun 4, 2019
- Fujikura Ltd.
- Yusuke Sasaki
- G02 - OPTICS
Information Patent Grant
Multicore fiber
- Patent number 10,295,736
- Issue date May 21, 2019
- Fujikura Ltd.
- Yoshimichi Amma
- G02 - OPTICS
Information Patent Grant
Optical transmission device and bidirectional optical transmission...
- Patent number 10,162,136
- Issue date Dec 25, 2018
- Fujikura Ltd.
- Kazuhiro Goi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Multicore fiber for communication
- Patent number 10,156,674
- Issue date Dec 18, 2018
- Fujikura Ltd.
- Katsuhiro Takenaga
- G02 - OPTICS
Information Patent Grant
Multicore fiber
- Patent number 10,101,526
- Issue date Oct 16, 2018
- Fujikura Ltd.
- Yusuke Sasaki
- G02 - OPTICS
Information Patent Grant
Multicore fiber for communication
- Patent number 10,042,114
- Issue date Aug 7, 2018
- Fujikura Ltd.
- Katsuhiro Takenaga
- G02 - OPTICS
Information Patent Grant
Multicore fiber and optical cable
- Patent number 9,891,377
- Issue date Feb 13, 2018
- Fujikura Ltd.
- Shota Saito
- G02 - OPTICS
Information Patent Grant
Multicore fiber
- Patent number 9,817,183
- Issue date Nov 14, 2017
- Fujikura Ltd.
- Yoshimichi Amma
- G02 - OPTICS
Information Patent Grant
Multicore fiber with different-mode interaction section
- Patent number 9,709,729
- Issue date Jul 18, 2017
- Fujikura Ltd.
- Yusuke Sasaki
- G02 - OPTICS
Information Patent Grant
Optical fiber for amplification and optical fiber amplifier using t...
- Patent number 9,698,557
- Issue date Jul 4, 2017
- Fujikura Ltd.
- Tsukasa Hosokawa
- G02 - OPTICS
Information Patent Grant
Amplification optical fiber and optical fiber amplifier
- Patent number 9,673,589
- Issue date Jun 6, 2017
- Fujikura Ltd.
- Tsukasa Hosokawa
- G02 - OPTICS
Information Patent Grant
Multi-core fiber
- Patent number 9,588,284
- Issue date Mar 7, 2017
- Fujikura Ltd.
- Yusuke Sasaki
- G02 - OPTICS
Information Patent Grant
Amplifying optical fiber and optical amplifier
- Patent number 9,515,450
- Issue date Dec 6, 2016
- Fujikura Ltd.
- Shoichiro Matsuo
- G02 - OPTICS
Information Patent Grant
Optical device
- Patent number 9,477,035
- Issue date Oct 25, 2016
- Fujikura Ltd.
- Hitoshi Uemura
- G02 - OPTICS
Information Patent Grant
Optical device
- Patent number 9,435,943
- Issue date Sep 6, 2016
- Fujikura Ltd.
- Katsuhiro Takenaga
- G02 - OPTICS
Information Patent Grant
Method of producing preform for coupled multi-core fiber, method of...
- Patent number 9,366,807
- Issue date Jun 14, 2016
- Fujikura Ltd.
- Shoji Tanigawa
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Amplifying optical fiber and optical amplifier
- Patent number 9,252,556
- Issue date Feb 2, 2016
- Fujikura Ltd.
- Shoichiro Matsuo
- G02 - OPTICS
Information Patent Grant
Sold photonic band gap fiber, fiber module using sold photonic band...
- Patent number 9,229,157
- Issue date Jan 5, 2016
- Fujikura Ltd.
- Shoji Tanigawa
- G02 - OPTICS
Information Patent Grant
Method of connecting multi-core fibers
- Patent number 9,199,411
- Issue date Dec 1, 2015
- Fujikura Ltd.
- Yoko Arakawa
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Optical fiber having holes
- Patent number 9,121,995
- Issue date Sep 1, 2015
- Fujikura Ltd.
- Shoji Tanigawa
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL FIBER PREFORM PRODUCTION METHOD, OPTICAL FIBER PREFORM, AND...
- Publication number 20240051865
- Publication date Feb 15, 2024
- FUJIKURA LTD.
- Yoshimichi Amma
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Application
MULTI-CORE OPTICAL FIBER PREFORM, MULTI-CORE OPTICAL FIBER PREFORM...
- Publication number 20230382779
- Publication date Nov 30, 2023
- FUJIKURA LTD.
- Ryohei Fukumoto
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Application
MULTICORE FIBER, OPTICAL FIBER CABLE, AND OPTICAL CONNECTOR
- Publication number 20230036200
- Publication date Feb 2, 2023
- FUJIKURA LTD.
- Katsuhiro Takenaga
- G02 - OPTICS
Information Patent Application
MULTICORE FIBER, OPTICAL FIBER CABLE, AND OPTICAL CONNECTOR
- Publication number 20230017442
- Publication date Jan 19, 2023
- FUJIKURA LTD.
- Katsuhiro Takenaga
- G02 - OPTICS
Information Patent Application
METHOD FOR ALIGNING MULTICORE FIBER, METHOD FOR MANUFACTURING MULTI...
- Publication number 20220291452
- Publication date Sep 15, 2022
- FUJIKURA LTD.
- Masaki Ohzeki
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
OPTICAL FIBER PREFORM PRODUCTION METHOD, OPTICAL FIBER PREFORM, AND...
- Publication number 20200369555
- Publication date Nov 26, 2020
- FUJIKURA LTD.
- Yoshimichi Amma
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Application
OPTICAL FIBER DRAWING FURNACE HEATING ELEMENT, OPTICAL FIBER DRAWIN...
- Publication number 20200308043
- Publication date Oct 1, 2020
- FUJIKURA LTD.
- Takayuki Kitamura
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Application
MULTICORE FIBER FOR COMMUNICATION
- Publication number 20190072712
- Publication date Mar 7, 2019
- FUJIKURA LTD.
- Katsuhiro Takenaga
- G02 - OPTICS
Information Patent Application
OPTICAL FIBER
- Publication number 20190049658
- Publication date Feb 14, 2019
- FUJIKURA LTD.
- Shota Saito
- G02 - OPTICS
Information Patent Application
MULTICORE FIBER
- Publication number 20190033513
- Publication date Jan 31, 2019
- FUJIKURA LTD.
- Yusuke Sasaki
- G02 - OPTICS
Information Patent Application
OPTICAL DEVICE
- Publication number 20190033512
- Publication date Jan 31, 2019
- FUJIKURA LTD.
- Hitoshi Uemura
- G02 - OPTICS
Information Patent Application
MULTICORE FIBER
- Publication number 20180356590
- Publication date Dec 13, 2018
- FUJIKURA LTD.
- Yoshimichi Amma
- G02 - OPTICS
Information Patent Application
METHOD OF MEASURING CROSSTALK OF MULTICORE FIBER AND APPARATUS OF M...
- Publication number 20180246007
- Publication date Aug 30, 2018
- FUJIKURA LTD.
- Shota Saito
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
CHARACTERISTIC-MEASURING APPARATUS AND CHARACTERISTIC-MEASURING MET...
- Publication number 20180246008
- Publication date Aug 30, 2018
- FUJIKURA LTD.
- Shota Saito
- G01 - MEASURING TESTING
Information Patent Application
MULTICORE FIBER AND OPTICAL CABLE
- Publication number 20180246275
- Publication date Aug 30, 2018
- FUJIKURA LTD.
- Shota SAITO
- G02 - OPTICS
Information Patent Application
OPTICAL TRANSMISSION DEVICE AND BIDIRECTIONAL OPTICAL TRANSMISSION...
- Publication number 20180224613
- Publication date Aug 9, 2018
- FUJIKURA LTD.
- Kazuhiro Goi
- G02 - OPTICS
Information Patent Application
MULTICORE FIBER
- Publication number 20180120501
- Publication date May 3, 2018
- FUJIKURA LTD.
- Yusuke Sasaki
- G02 - OPTICS
Information Patent Application
MULTI-CORE FIBER
- Publication number 20180120502
- Publication date May 3, 2018
- FUJIKURA LTD.
- Yusuke Sasaki
- G02 - OPTICS
Information Patent Application
MULTICORE FIBER
- Publication number 20170235043
- Publication date Aug 17, 2017
- FUJIKURA LTD.
- Yoshimichi Amma
- G02 - OPTICS
Information Patent Application
MULTICORE FIBER AND OPTICAL CABLE
- Publication number 20170199325
- Publication date Jul 13, 2017
- FUJIKURA LTD.
- Shota SAITO
- G02 - OPTICS
Information Patent Application
AMPLIFICATION OPTICAL FIBER AND OPTICAL FIBER AMPLIFIER
- Publication number 20170054266
- Publication date Feb 23, 2017
- FUJIKURA LTD.
- Tsukasa Hosokawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
OPTICAL FIBER FOR AMPLIFICATION AND OPTICAL FIBER AMPLIFIER USING T...
- Publication number 20160268757
- Publication date Sep 15, 2016
- FUJIKURA LTD.
- Tsukasa Hosokawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
MULTICORE FIBER FOR COMMUNICATION
- Publication number 20160245993
- Publication date Aug 25, 2016
- FUJIKURA LTD.
- Katsuhiro Takenaga
- G02 - OPTICS
Information Patent Application
OPTICAL DEVICE
- Publication number 20160245992
- Publication date Aug 25, 2016
- FUJIKURA LTD.
- Katsuhiro Takenaga
- G02 - OPTICS
Information Patent Application
MULTICORE FIBER FOR COMMUNICATION
- Publication number 20160245994
- Publication date Aug 25, 2016
- FUJIKURA LTD.
- Katsuhiro Takenaga
- G02 - OPTICS
Information Patent Application
MULTICORE FIBER
- Publication number 20160187577
- Publication date Jun 30, 2016
- FUJIKURA LTD.
- Yusuke Sasaki
- G02 - OPTICS
Information Patent Application
MULTI-CORE FIBER
- Publication number 20160187576
- Publication date Jun 30, 2016
- FUJIKURA LTD.
- Yusuke Sasaki
- G02 - OPTICS
Information Patent Application
MULTI-CORE FIBER
- Publication number 20160004009
- Publication date Jan 7, 2016
- FUJIKURA LTD.
- Katsuhiro Takenaga
- G02 - OPTICS
Information Patent Application
AMPLIFYING OPTICAL FIBER AND OPTICAL AMPLIFIER
- Publication number 20150318659
- Publication date Nov 5, 2015
- FUJIKURA LTD.
- Shoichiro Matsuo
- G02 - OPTICS
Information Patent Application
AMPLIFYING OPTICAL FIBER AND OPTICAL AMPLIFIER
- Publication number 20150318661
- Publication date Nov 5, 2015
- FUJIKURA LTD.
- Shoichiro Matsuo
- G02 - OPTICS

Katsuhiro Takenaga

Person

Patents Grantslast 30 patents

Multicore fiber, optical fiber cable, and optical connector

Multicore fiber, optical fiber cable, and optical connector

Method for aligning multicore fiber, method for manufacturing multi...

Optical fiber preform production method, optical fiber preform, and...

Multicore fiber

Multicore fiber for communication

Optical fiber

Characteristic-measuring apparatus and characteristic-measuring met...

Method of measuring crosstalk of multicore fiber and apparatus of m...

Multicore fiber and optical cable

Multi-core fiber

Multicore fiber

Optical transmission device and bidirectional optical transmission...

Multicore fiber for communication

Multicore fiber

Multicore fiber for communication

Multicore fiber and optical cable

Multicore fiber

Multicore fiber with different-mode interaction section

Optical fiber for amplification and optical fiber amplifier using t...

Amplification optical fiber and optical fiber amplifier

Multi-core fiber

Amplifying optical fiber and optical amplifier

Optical device

Optical device

Method of producing preform for coupled multi-core fiber, method of...

Amplifying optical fiber and optical amplifier

Sold photonic band gap fiber, fiber module using sold photonic band...

Method of connecting multi-core fibers

Optical fiber having holes

Patents Applicationslast 30 patents

OPTICAL FIBER PREFORM PRODUCTION METHOD, OPTICAL FIBER PREFORM, AND...

MULTI-CORE OPTICAL FIBER PREFORM, MULTI-CORE OPTICAL FIBER PREFORM...

MULTICORE FIBER, OPTICAL FIBER CABLE, AND OPTICAL CONNECTOR

MULTICORE FIBER, OPTICAL FIBER CABLE, AND OPTICAL CONNECTOR

METHOD FOR ALIGNING MULTICORE FIBER, METHOD FOR MANUFACTURING MULTI...

OPTICAL FIBER PREFORM PRODUCTION METHOD, OPTICAL FIBER PREFORM, AND...

OPTICAL FIBER DRAWING FURNACE HEATING ELEMENT, OPTICAL FIBER DRAWIN...

MULTICORE FIBER FOR COMMUNICATION

OPTICAL FIBER

MULTICORE FIBER

OPTICAL DEVICE

MULTICORE FIBER

METHOD OF MEASURING CROSSTALK OF MULTICORE FIBER AND APPARATUS OF M...

CHARACTERISTIC-MEASURING APPARATUS AND CHARACTERISTIC-MEASURING MET...

MULTICORE FIBER AND OPTICAL CABLE

OPTICAL TRANSMISSION DEVICE AND BIDIRECTIONAL OPTICAL TRANSMISSION...

MULTICORE FIBER

MULTI-CORE FIBER

MULTICORE FIBER

MULTICORE FIBER AND OPTICAL CABLE

AMPLIFICATION OPTICAL FIBER AND OPTICAL FIBER AMPLIFIER

OPTICAL FIBER FOR AMPLIFICATION AND OPTICAL FIBER AMPLIFIER USING T...

MULTICORE FIBER FOR COMMUNICATION

OPTICAL DEVICE

MULTICORE FIBER FOR COMMUNICATION

MULTICORE FIBER

MULTI-CORE FIBER

MULTI-CORE FIBER

AMPLIFYING OPTICAL FIBER AND OPTICAL AMPLIFIER

AMPLIFYING OPTICAL FIBER AND OPTICAL AMPLIFIER