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Takeshi Takahashi
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Yamanashi, JP
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last 30 patents
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Patent Grant
Light polarizing glass containing copper particles and process for...
Patent number
6,313,947
Issue date
Nov 6, 2001
Hoya Corporation
Takeshi Takahashi
G02 - OPTICS
Information
Patent Grant
Process for the production of polarizing glass
Patent number
6,167,727
Issue date
Jan 2, 2001
Hoya Corporation
Hidemi Tajima
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Polarizing glass and production process thereof
Patent number
5,886,820
Issue date
Mar 23, 1999
Hoya Corporation
Hidemi Tajima
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Process for the production of polarizing glass
Patent number
5,840,096
Issue date
Nov 24, 1998
Hoya Corporation
Hidemi Tajima
C03 - GLASS MINERAL OR SLAG WOOL