Yutaka Sakai

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Saitama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Finder optical system
- Patent number 4,614,409
- Issue date Sep 30, 1986
- Fuji Photo Optical Co., Ltd.
- Yutaka Sakai
- G02 - OPTICS
Information Patent Grant
Wide angle zoom lens
- Patent number 4,484,799
- Issue date Nov 27, 1984
- Fuji Photo Optical Co., Ltd.
- Yoshikazu Doi
- G02 - OPTICS
Information Patent Grant
Focussing apparatus having blurring indicator
- Patent number 4,358,190
- Issue date Nov 9, 1982
- Fuji Photo Optical Co., Ltd.
- Yutaka Sakai
- G02 - OPTICS
Information Patent Grant
Rear stop type lens system
- Patent number 4,298,252
- Issue date Nov 3, 1981
- Fuji Photo Optical Co., Ltd.
- Yoshikazu Doi
- G02 - OPTICS
Information Patent Grant
Rear stop type zoom lens
- Patent number 4,294,521
- Issue date Oct 13, 1981
- Fuji Photo Optical Co., Ltd.
- Yoshikazu Doi
- G02 - OPTICS
Information Patent Grant
Zoom lens system
- Patent number 4,195,912
- Issue date Apr 1, 1980
- Fuji Photo Optical Co., Ltd.
- Yoshikazu Doi
- G02 - OPTICS
Information Patent Grant
Inverted telephoto type super-wide angle lens
- Patent number 4,158,482
- Issue date Jun 19, 1979
- Fuji Photo Optical Co., Ltd.
- Yoshikazu Doi
- G02 - OPTICS