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Shinobu Nagahama
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Saitama-shi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
White light-emitting device using fluorescent fiber
Patent number
7,505,655
Issue date
Mar 17, 2009
Sumita Optical Glass, Inc.
Masaaki Yamazaki
G02 - OPTICS
Information
Patent Grant
Optical glass for precision molding
Patent number
7,312,169
Issue date
Dec 25, 2007
Sumita Optical Glass, Inc.
Yoshinori Yamamoto
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
White light-emitting device using fluorescent fiber
Patent number
7,277,618
Issue date
Oct 2, 2007
Sumita Optical Glass, Inc.
Masaaki Yamazaki
G02 - OPTICS
Information
Patent Grant
Optical glass suitable for mold forming
Patent number
7,151,064
Issue date
Dec 19, 2006
SUMITA OPTICAL GLASS, INC.
Masaaki Otsuka
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Optical glass for precision molding
Patent number
7,141,525
Issue date
Nov 28, 2006
Sumita Optical Glass, Inc.
Yoshinori Yamamoto
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Optical glass for molding
Patent number
6,784,128
Issue date
Aug 31, 2004
Sumita Optical Glass, Inc.
Masaaki Otsuka
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Oxide glass showing long afterglow and accelerated phosphorescence
Patent number
6,372,155
Issue date
Apr 16, 2002
Sumita Optical Glass, Inc.
Masaaki Yamazaki
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Optical glass for precision molding
Patent number
6,333,282
Issue date
Dec 25, 2001
Sumita Optical Glass, Inc.
Koji Nakahata
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Oxide phosphorescent glass capable of exhibiting a long lasting aft...
Patent number
6,271,160
Issue date
Aug 7, 2001
Sumita Optical Glass, Inc.
Yoshinori Yamamoto
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Oxide phosphorescent glass capable of exhibiting a long lasting aft...
Patent number
6,123,872
Issue date
Sep 26, 2000
Sumita Optical Glass, Inc.
Masaaki Yamazaki
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Fluorophosphate fluorescent glass capable of exhibiting fluorescenc...
Patent number
5,755,998
Issue date
May 26, 1998
Sumita Optical Glass, Inc.
Masaaki Yamazaki
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Infrared-to-visible up-conversion material
Patent number
5,541,012
Issue date
Jul 30, 1996
Nippon Telegraph & Telephone Corporation
Junichi Ohwaki
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Process for the production of an optical fiber bundle for heat resi...
Patent number
5,472,471
Issue date
Dec 5, 1995
Sumita Optical Glass, Inc.
Nobuyoshi Baba
G02 - OPTICS
Information
Patent Grant
Infrared light-excited light-emitting substance
Patent number
5,439,616
Issue date
Aug 8, 1995
Mitsubishi Materials Corporation
Shoji Ishiwata
C30 - CRYSTAL GROWTH
Information
Patent Grant
Fluorosphosphate optical glass
Patent number
5,017,520
Issue date
May 21, 1991
Sumita Optical Glass, Inc.
Masaaki Otsuka
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Fluorophosphate optical glass
Patent number
4,990,468
Issue date
Feb 5, 1991
Sumita Optical Glass, Inc.
Masayuki Komiya
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Fluorophosphate optical glass
Patent number
4,808,556
Issue date
Feb 28, 1989
Sumita Optical Glass Mfg. Co., Ltd.
Naruhito Sawanobori
C03 - GLASS MINERAL OR SLAG WOOL
Patents Applications
last 30 patents
Information
Patent Application
WHITE LIGHT-EMITTING DEVICE USING FLUORESCENT FIBER
Publication number
20070229938
Publication date
Oct 4, 2007
Sumita Optical Glass, Inc.
Masaaki Yamazaki
G02 - OPTICS
Information
Patent Application
MULTIPLE WAVELENGTH LASER LIGHT SOURCE USING FLUORESCENT FIBER
Publication number
20070121684
Publication date
May 31, 2007
Sumita Optical Glass, Inc.
Masaaki Yamazaki
G02 - OPTICS
Information
Patent Application
WHITE LIGHT-EMITTING DEVICE USING FLUORESCENT FIBER
Publication number
20070122103
Publication date
May 31, 2007
Sumita Optical Glass, Inc.
Masaaki Yamazaki
G02 - OPTICS
Information
Patent Application
Optical glass for precision molding
Publication number
20050192174
Publication date
Sep 1, 2005
Sumita Optical Glass, Inc.
Yoshinori Yamamoto
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Application
Optical glass for precision molding
Publication number
20050159290
Publication date
Jul 21, 2005
Sumita Optical Glass, Inc.
Yoshinori Yamamoto
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Application
Optical glass suitable for mold forming
Publication number
20040087428
Publication date
May 6, 2004
Masaaki Otsuka
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Application
Optical glass for molding
Publication number
20030153450
Publication date
Aug 14, 2003
Sumita Optical Glass, Inc.
Masaaki Otsuka
C03 - GLASS MINERAL OR SLAG WOOL