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Tomoko Nakagawa
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Sakai-Shi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Zoom lens system
Patent number
6,785,055
Issue date
Aug 31, 2004
Minolta Co. Ltd.
Jun Nishikawa
G02 - OPTICS
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Patent Grant
Illumination optical system and image projection apparatus
Patent number
6,558,007
Issue date
May 6, 2003
Minolta Co., Ltd.
Tomoko Nakagawa
F21 - LIGHTING
Patents Applications
last 30 patents
Information
Patent Application
Zoom lens system
Publication number
20030103268
Publication date
Jun 5, 2003
Jun Nishikawa
G02 - OPTICS
Information
Patent Application
Illumination optical system and image projection apparatus
Publication number
20020149939
Publication date
Oct 17, 2002
MINOLTA CO., LTD.
Tomoko Nakagawa
G02 - OPTICS