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Yoshikazu Nishii
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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Photocatalytic filter, photocatalytic filter device and method for...
Patent number
6,878,277
Issue date
Apr 12, 2005
Hoya Candeo Optronics Corporation
Masayuki Higashida
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Light-transmittable linear photocatalytic filter material, filter t...
Patent number
6,820,751
Issue date
Nov 23, 2004
Hoya Candeo Optronics Corporation
Yoshikazu Nishii
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Photocatalyst filter for a light leakage type
Patent number
6,764,655
Issue date
Jul 20, 2004
Hoya Corporation
Yoshikazu Nishii
A62 - LIFE-SAVING FIRE-FIGHTING
Information
Patent Grant
Glass material for carrying a photocatalyst, filter device using th...
Patent number
6,468,428
Issue date
Oct 22, 2002
Hoya Corporation
Yoshikazu Nishii
G02 - OPTICS
Patents Applications
last 30 patents
Information
Patent Application
Light-transmittable linear photocatalytic filter material, filter t...
Publication number
20030057404
Publication date
Mar 27, 2003
Yoshikazu Nishii
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
Photocatalytic filter, photocatalytic filter device and method for...
Publication number
20020195381
Publication date
Dec 26, 2002
Masayuki Higashida
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
Photocatalytic filter
Publication number
20020081246
Publication date
Jun 27, 2002
Hoya Corporation
Shougo Tsukada
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL