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Toshio Kurashima
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Mito, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Measuring method of longitudinal distribution of bending loss of op...
Patent number
9,562,827
Issue date
Feb 7, 2017
Fujikura Ltd.
Shoji Tanigawa
G01 - MEASURING TESTING
Information
Patent Grant
Measuring method of hole diameter, hole position, hole surface roug...
Patent number
9,175,946
Issue date
Nov 3, 2015
Nippon Telegraph and Telephone Corporation
Itaru Ishida
G01 - MEASURING TESTING
Information
Patent Grant
Hole-assisted optical fiber
Patent number
9,075,185
Issue date
Jul 7, 2015
Furukawa Electric Co., Ltd.
Naomi Kumano
G02 - OPTICS
Information
Patent Grant
Method of sealing air holes in an optical fiber
Patent number
8,800,323
Issue date
Aug 12, 2014
Hitachi Metals, Ltd.
Yoshinori Kurosawa
G02 - OPTICS
Information
Patent Grant
Optical connector and method for assembling same
Patent number
8,702,317
Issue date
Apr 22, 2014
Nippon Telegraph and Telephone Corporation
Ryo Koyama
G02 - OPTICS
Information
Patent Grant
Optical fiber preform manufacturing method
Patent number
8,181,487
Issue date
May 22, 2012
Furukawa Electric Co., Ltd.
Ryuichi Sugizaki
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Optical fiber, optical fiber connecting method, and optical connector
Patent number
7,658,550
Issue date
Feb 9, 2010
Hitachi Cable Ltd.
Yoshinori Kurosawa
G02 - OPTICS
Information
Patent Grant
Optical fiber, optical fiber connecting method, and optical connector
Patent number
7,376,315
Issue date
May 20, 2008
Hitachi Cable, Ltd.
Yoshinori Kurosawa
G02 - OPTICS
Information
Patent Grant
Optical fiber coiled cord
Patent number
7,349,610
Issue date
Mar 25, 2008
Hitachi Cable, Ltd.
Kazumasa Ohsono
G02 - OPTICS
Information
Patent Grant
Optical fiber distortion measuring apparatus and optical fiber dist...
Patent number
6,366,348
Issue date
Apr 2, 2002
Ando Electric Co., Ltd.
Yasushi Sato
G01 - MEASURING TESTING
Information
Patent Grant
Optical-fiber characteristics measuring apparatus
Patent number
6,335,788
Issue date
Jan 1, 2002
Ando Electric Co., Ltd.
Haruyoshi Uchiyama
G01 - MEASURING TESTING
Information
Patent Grant
Optical fiber strain measuring apparatus
Patent number
5,880,824
Issue date
Mar 9, 1999
Ando Electric Co., Ltd.
Haruyoshi Uchiyama
G01 - MEASURING TESTING
Information
Patent Grant
Optical fiber characteristic measuring device
Patent number
5,686,986
Issue date
Nov 11, 1997
Ando Electric Co., Ltd.
Zhixien Li
G01 - MEASURING TESTING
Information
Patent Grant
Optical cable and its manufacturing method
Patent number
5,136,673
Issue date
Aug 4, 1992
Nippon Telegraph & Telephone Corporation
Nobuyuki Yoshizawa
G02 - OPTICS
Patents Applications
last 30 patents
Information
Patent Application
HOLE-ASSISTED OPTICAL FIBER
Publication number
20130136409
Publication date
May 30, 2013
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Naomi Kumano
G02 - OPTICS
Information
Patent Application
OPTICAL CONNECTOR AND METHOD FOR ASSEMBLING SAME
Publication number
20120128303
Publication date
May 24, 2012
Ryo Koyama
G02 - OPTICS
Information
Patent Application
MEASURING METHOD OF HOLE DIAMETER, HOLE POSITION, HOLE SURFACE ROUG...
Publication number
20120044482
Publication date
Feb 23, 2012
Nippon Telegraph and Telephone Corporation
Itaru ISHIDA
G01 - MEASURING TESTING
Information
Patent Application
MEASURING METHOD OF LONGITUDINAL DISTRIBUTION OF BENDING LOSS OF OP...
Publication number
20120042696
Publication date
Feb 23, 2012
Nippon Telegraph and Telephone Corporation
Shoji TANIGAWA
G01 - MEASURING TESTING
Information
Patent Application
Coated Optical Fiber Identifying Apparatus and Coated Optical Fiber...
Publication number
20110141458
Publication date
Jun 16, 2011
Nippon Telegraph and Telephone Corporation
Takashi Matsui
G02 - OPTICS
Information
Patent Application
OPTICAL FIBER PREFORM MANUFACTURING METHOD
Publication number
20100326139
Publication date
Dec 30, 2010
FURUKAWA ELECTRIC CO., LTD.
Ryuichi SUGIZAKI
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Application
Optical fiber, optical fiber connecting method, and optical connector
Publication number
20080250816
Publication date
Oct 16, 2008
Hitachi Cable, Ltd.
Yoshinori Kurosawa
G02 - OPTICS
Information
Patent Application
Optical fiber, optical fiber connecting method, and optical connector
Publication number
20080253726
Publication date
Oct 16, 2008
Hitachi Cable, Ltd.
Yoshinori Kurosawa
G02 - OPTICS
Information
Patent Application
Optical fiber coiled cord
Publication number
20060257086
Publication date
Nov 16, 2006
Hitachi Cable, Ltd.
Kazumasa Ohsono
G02 - OPTICS
Information
Patent Application
Optical fiber, optical fiber connecting method, and optical connector
Publication number
20060204195
Publication date
Sep 14, 2006
Yoshinori Kurosawa
G02 - OPTICS