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Kazuo TACHIWANA
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Hamura-shi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Glass article
Patent number
9,718,723
Issue date
Aug 1, 2017
Hoya Corporation
Kazuo Tachiwana
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Method for manufacturing optical element
Patent number
9,663,402
Issue date
May 30, 2017
Hoya Corporation
Kazuo Tachiwana
B24 - GRINDING POLISHING
Information
Patent Grant
Glass for use as substrate for information recording medium, substr...
Patent number
9,236,077
Issue date
Jan 12, 2016
Hoya Corporation
Kazuo Tachiwana
G11 - INFORMATION STORAGE
Information
Patent Grant
Glass for use as substrate for information recording medium, substr...
Patent number
8,785,011
Issue date
Jul 22, 2014
Hoya Corporation
Kazuo Tachiwana
G11 - INFORMATION STORAGE
Information
Patent Grant
Material for information recording medium substrate, information re...
Patent number
8,656,734
Issue date
Feb 25, 2014
Hoya Corporation
Xuelu Zou
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical glass, glass material for press molding, optical element, a...
Patent number
8,479,539
Issue date
Jul 9, 2013
Hoya Corporation
Yoshiko Kasuga
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Glass for use in substrate for information recording medium, substr...
Patent number
8,357,459
Issue date
Jan 22, 2013
Hoya Corporation
Kazuo Tachiwana
G11 - INFORMATION STORAGE
Information
Patent Grant
On-vehicle camera lens glass material and on-vehicle camera lens
Patent number
8,077,406
Issue date
Dec 13, 2011
Hoya Corporation
Yoichi Hachitani
B60 - VEHICLES IN GENERAL
Information
Patent Grant
Glass for use in substrate for information recording medium, substr...
Patent number
8,076,014
Issue date
Dec 13, 2011
Hoya Corporation
Kazuo Tachiwana
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical glass and process for the production of optical products
Patent number
7,501,369
Issue date
Mar 10, 2009
Hoya Corporation
Kazuo Tachiwana
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Optical glass, glass material for press molding, optical element, a...
Patent number
7,015,164
Issue date
Mar 21, 2006
Hoya Corporation
Yoshiko Kasuga
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Light polarization control element using stress-optical coefficient...
Patent number
6,156,684
Issue date
Dec 5, 2000
Hoya Corporation
Kouichi Sato
G02 - OPTICS
Information
Patent Grant
Information recording medium
Patent number
5,972,460
Issue date
Oct 26, 1999
Hoya Corporation
Kazuo Tachiwana
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Near infrared absorption filter glass
Patent number
5,668,066
Issue date
Sep 16, 1997
Hoya Corporation
Hironori Oguma
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Optical glass
Patent number
4,996,173
Issue date
Feb 26, 1991
Hoya Corporation
Kazuo Tachiwana
G02 - OPTICS
Patents Applications
last 30 patents
Information
Patent Application
GLASS AND ARTICLE INCLUDING GLASS
Publication number
20230139239
Publication date
May 4, 2023
HOYA CORPORATION
Kazuo TACHIWANA
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Application
METHOD FOR MANUFACTURING OPTICAL ELEMENT
Publication number
20150353420
Publication date
Dec 10, 2015
HOYA CORPORATION
Kazuo TACHIWANA
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Application
GLASS ARTICLE
Publication number
20150299029
Publication date
Oct 22, 2015
HOYA CORPORATION
Kazuo TACHIWANA
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Application
GLASS FOR USE AS SUBSTRATE FOR INFORMATION RECORDING MEDIUM, SUBSTR...
Publication number
20140302346
Publication date
Oct 9, 2014
HOYA CORPORATION
Kazuo TACHIWANA
G11 - INFORMATION STORAGE
Information
Patent Application
OPTICAL GLASS, GLASS MATERIAL FOR PRESS MOLDING, OPTICAL ELEMENT, A...
Publication number
20130337992
Publication date
Dec 19, 2013
Yoshiko KASUGA
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Application
METHOD FOR PROVIDING GLASS INFORMATION AND GLASS MATERIAL
Publication number
20130065745
Publication date
Mar 14, 2013
HOYA CORPORATION
Shigeru AOYAGI
G01 - MEASURING TESTING
Information
Patent Application
METHOD FOR TESTING GLASS MATERIAL, METHOD FOR EVALUATING GLASS MATE...
Publication number
20130059069
Publication date
Mar 7, 2013
HOYA CORPORATION
Shigeru Aoyagi
G01 - MEASURING TESTING
Information
Patent Application
GLASS FOR USE AS SUBSTRATE FOR INFORMATION RECORDING MEDIUM, SUBSTR...
Publication number
20120328907
Publication date
Dec 27, 2012
HOYA CORPORATION
Kazuo TACHIWANA
G11 - INFORMATION STORAGE
Information
Patent Application
GLASS FOR USE AS SUBSTRATE FOR INFORMATION RECORDING MEDIUM, SUBSTR...
Publication number
20120021892
Publication date
Jan 26, 2012
HOYA CORPORATION
Kazuo Tachiwana
G11 - INFORMATION STORAGE
Information
Patent Application
GLASS FOR USE IN SUBSTRATE FOR INFORMATION RECORDING MEDIUM, SUBSTR...
Publication number
20100167091
Publication date
Jul 1, 2010
HOYA CORPORATION
Kazuo Tachiwana
G11 - INFORMATION STORAGE
Information
Patent Application
ON-VEHICLE CAMERA LENS GLASS MATERIAL AND ON-VEHICLE CAMERA LENS
Publication number
20080231972
Publication date
Sep 25, 2008
HOYA CORPORATION
Yoichi HACHITANI
B60 - VEHICLES IN GENERAL
Information
Patent Application
Optical glass and process for the production of optical products
Publication number
20070262480
Publication date
Nov 15, 2007
HOYA CORPORATION
Kazuo Tachiwana
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Application
Optical glass, glass material for press molding, optical element, a...
Publication number
20060105897
Publication date
May 18, 2006
Hoya Corporation
Yoshiko Kasuga
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Application
Optical glass for prism, process for the production thereof, and op...
Publication number
20030147157
Publication date
Aug 7, 2003
Yoichiro Kamimura
G02 - OPTICS
Information
Patent Application
Optical glass, glass material for press molding, optical element, a...
Publication number
20030096694
Publication date
May 22, 2003
HOYA CORPORATION
Yoshiko Kasuga
C03 - GLASS MINERAL OR SLAG WOOL