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Katsuaki Mitani
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Ibaraki, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Reflecting mirror and film and television receiver
Patent number
6,425,672
Issue date
Jul 30, 2002
Matsushita Electric Industrial Co., Ltd.
Takehiko Yamashita
G02 - OPTICS
Information
Patent Grant
Reflecting mirror and film and television receiver
Patent number
6,264,341
Issue date
Jul 24, 2001
Matsushita Electric Industrial Co., Ltd.
Takehiko Yamashita
G02 - OPTICS
Information
Patent Grant
Reflecting mirror and film and television receiver
Patent number
6,203,162
Issue date
Mar 20, 2001
Matsushita Electric Industrial Co., Ltd.
Takehiko Yamashita
G02 - OPTICS
Information
Patent Grant
Permeable screen and its manufacturing method
Patent number
5,914,809
Issue date
Jun 22, 1999
Matsushita Electric Industrial Co., Ltd.
Katsuaki Mitani
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Light transmission screen
Patent number
5,831,585
Issue date
Nov 3, 1998
Matsushita Electric Industrial Co., Ltd.
Satoshi Aoki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Light transmission screen and its manufacturing method
Patent number
5,824,174
Issue date
Oct 20, 1998
Matsushita Electric Industrial Co., Ltd.
Katsuaki Mitani
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Light transmission screen and its manufacturing method
Patent number
5,815,313
Issue date
Sep 29, 1998
Matsushita Electric Industrial Co., Ltd.
Katsuaki Mitani
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Optical sheet and a light transmission screen using the same
Patent number
5,724,182
Issue date
Mar 3, 1998
Matsushita Electric Industrial Co., Ltd.
Katsuaki Mitani
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Light transmission type screen assembly
Patent number
5,699,131
Issue date
Dec 16, 1997
Matsushita Electric Industrial Co., Ltd.
Satoshi Aoki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Transmission type screen and method of manufacturing thereof
Patent number
5,661,600
Issue date
Aug 26, 1997
Matsushita Electric Co., Ltd.
Katsuaki Mitani
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Lens holder and method for making a thin film
Patent number
5,612,085
Issue date
Mar 18, 1997
Matsushita Electric Industrial Co., Ltd.
Katsuaki Mitani
G02 - OPTICS
Information
Patent Grant
Permeable screen and its manufacturing method
Patent number
5,581,407
Issue date
Dec 3, 1996
Matsushita Electric Industrial Co., Ltd.
Katsuaki Mitani
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Transmission type screen and method of manufacturing thereof
Patent number
5,434,706
Issue date
Jul 18, 1995
Matsushita Electric Industrial Co., Ltd.
Katsuaki Mitani
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Lens holder which reduces internal reflections
Patent number
5,353,070
Issue date
Oct 4, 1994
Matsushita Electric Industrial Co., Ltd.
Katsuaki Mitani
G02 - OPTICS
Information
Patent Grant
Projection television with a wavelength-selection-type rear project...
Patent number
5,296,922
Issue date
Mar 22, 1994
Matsushita Electric Industrial Co., Ltd.
Katsuaki Mitani
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Television projection screen having anti-static elements
Patent number
5,184,224
Issue date
Feb 2, 1993
Matsushita Electric Industrial Co., Ltd.
Katsuaki Mitani
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Liquid cooled cathode ray tube apparatus for video projection system
Patent number
4,982,289
Issue date
Jan 1, 1991
Matsushita Electric Industrial Co., Ltd.
Katsuaki Mitani
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
X-ray shielded projection lens
Patent number
4,840,471
Issue date
Jun 20, 1989
Matsushita Electric Industrial Co., Ltd.
Katsuaki Mitani
G02 - OPTICS
Patents Applications
last 30 patents
Information
Patent Application
Reflecting mirror and film and television receiver
Publication number
20010038505
Publication date
Nov 8, 2001
Takehiko Yamashita
G02 - OPTICS