Kyoko Yamaguchi

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Sakai, JP

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Patents Grantslast 30 patents

Information Patent Grant
Optical system having an optical element made of resin
- Patent number 6,011,648
- Issue date Jan 4, 2000
- Minolta Co., Ltd.
- Hiromu Mukai
- G02 - OPTICS
Information Patent Grant
Zoom finder optical system
- Patent number 5,861,986
- Issue date Jan 19, 1999
- Minolta Co., Ltd.
- Katsuto Tanaka
- G02 - OPTICS
Information Patent Grant
Eyepiece
- Patent number 5,749,008
- Issue date May 5, 1998
- Minolta
- Jun Ishihara
- G02 - OPTICS