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Nippon Silica Glass Co., Ltd.
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Kyobashi, Chuo-ku, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Ultraviolet ray-transparent optical glass material and method of pr...
Patent number
6,376,401
Issue date
Apr 23, 2002
Tosoh Corporation
Shinichi Kondo
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Opaque silica glass article having transparent portion and process...
Patent number
6,312,775
Issue date
Nov 6, 2001
Tosoh Quartz Corporation
Hiroya Nagata
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
High purity transparent silica glass
Patent number
6,133,178
Issue date
Oct 17, 2000
Tosoh Corporation
Nobusuke Yamada
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Process for production of pure transparent quartz
Patent number
5,665,133
Issue date
Sep 9, 1997
Tosoh Corporation
Koichi Orii
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
High-purity, opaque quartz glass, method for producing same and use...
Patent number
5,585,173
Issue date
Dec 17, 1996
Tosoh Corporation
Kenji Kamo
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Plasma torch and an apparatus for producing fused silica using plas...
Patent number
5,376,767
Issue date
Dec 27, 1994
Tetronics Research & Development Co. Limited
Charles P. Heanley
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Silica production
Patent number
5,256,855
Issue date
Oct 26, 1993
Tetronics Research & Development Co. Ltd.
Charles P. Heanley
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Back lighting device for a liquid crystal panel
Patent number
4,937,709
Issue date
Jun 26, 1990
Tosoh Corporation
Eiichi Yanagi
G02 - OPTICS
Information
Patent Grant
Light source unit for a business machine
Patent number
4,924,357
Issue date
May 8, 1990
Japan as represented by Director General of Agency of Industrial Science and...
Hiroshi Yamashita
G02 - OPTICS
Patents Applications
last 30 patents
Trademark
last 30 trademarks
Information
Trademark
73302233 - NSG
Serial number
73302233
Registration number
1207042
Filing date
Mar 23, 1981
Nippon Silica Glass Co., Ltd.
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments