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Sakai, JP
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last 30 patents
Information
Patent Grant
Antireflection coating
Patent number
6,280,848
Issue date
Aug 28, 2001
Minolta Co., Ltd.
Masaru Okumura
G02 - OPTICS
Information
Patent Grant
Polarized beam splitter and an illumination optical system and a pr...
Patent number
6,190,013
Issue date
Feb 20, 2001
Minolta Co., Ltd.
Hakuzo Tani
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Projector
Patent number
6,155,685
Issue date
Dec 5, 2000
Minolta Co., Ltd.
Yasumasa Sawai
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Polarized beam splitter and an illumination optical system and a pr...
Patent number
5,967,635
Issue date
Oct 19, 1999
Minolta Co., Ltd.
Hakuzo Tani
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Anti-reflection coating of optical part made of synthetic resin
Patent number
4,921,760
Issue date
May 1, 1990
Minolta Camera Kabushiki Kaisha
Hakuzo Tani
G02 - OPTICS
Information
Patent Grant
Multi-layered anti-reflection coating
Patent number
4,784,467
Issue date
Nov 15, 1988
Minolta Camera Kabushiki Kaisha
Sadao Akatsuka
G02 - OPTICS
Information
Patent Grant
Flame detector for detecting phase difference in two different wave...
Patent number
4,742,236
Issue date
May 3, 1988
Minolta Camera Kabushiki Kaisha
Yuichi Kawakami
G08 - SIGNALLING
Information
Patent Grant
Multi-layer anti-reflection coating
Patent number
4,387,960
Issue date
Jun 14, 1983
Minolta Camera Co. Ltd.
Hakuzo Tani
G02 - OPTICS