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Chiba-shi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Single crystal, production process of same, optical isolator, and o...
Patent number
9,051,662
Issue date
Jun 9, 2015
Fujikura Ltd.
Kazuo Sanada
G02 - OPTICS
Information
Patent Grant
Method for reading of invisible marking
Patent number
5,686,725
Issue date
Nov 11, 1997
Kansai Paint Co., Ltd.
Tsutomu Maruyama
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method for formation of invisible marking and method for reading of...
Patent number
5,547,501
Issue date
Aug 20, 1996
Kansai Paint Co., Ltd.
Tsutomu Maruyama
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method of manufacturing radiation-resistant optical fiber
Patent number
5,269,825
Issue date
Dec 14, 1993
Fujikura, Ltd.
Kazuo Sanada
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Image fiber, image fiber preform, and manufacturing processes thereof
Patent number
5,048,923
Issue date
Sep 17, 1991
Fujikura, Ltd.
Takashi Tsumanuma
G02 - OPTICS
Information
Patent Grant
Image-transmitting fiber
Patent number
4,896,941
Issue date
Jan 30, 1990
Doryokuro Kakunenryo Kaihatsu Jigyodan
Shotaro Hayashi
G02 - OPTICS
Information
Patent Grant
Heat and radiation resistant optical fiber
Patent number
4,770,493
Issue date
Sep 13, 1988
Doroyokuro Kakunenryo Kaihatsu Jigyodan
Kuniaki Ara
G02 - OPTICS
Information
Patent Grant
Very-low-temperature fiberscope
Patent number
4,707,075
Issue date
Nov 17, 1987
Kabushiki Kaisha Toshiba
Eiji Fukushima
G02 - OPTICS
Information
Patent Grant
Optical fiber
Patent number
4,679,899
Issue date
Jul 14, 1987
Fujikura Ltd.
Toshiaki Kobayashi
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Apparatus for producing multi-component glass fiber preform
Patent number
4,388,098
Issue date
Jun 14, 1983
Nippon Telegraph & Telephone Public Corporation
Shiro Takahashi
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Method for producing multi-component glass fiber preform
Patent number
4,336,049
Issue date
Jun 22, 1982
Nippon Telegraph & Telephone Public Corporation
Shiro Takahashi
C03 - GLASS MINERAL OR SLAG WOOL
Patents Applications
last 30 patents
Information
Patent Application
SINGLE CRYSTAL, PRODUCTION PROCESS OF SAME, OPTICAL ISOLATOR, AND O...
Publication number
20120200920
Publication date
Aug 9, 2012
NATIONAL INSTITUTE FOR MATERIALS SCIENCE
Kazuo SANADA
C30 - CRYSTAL GROWTH