Shozo Ishiyama

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Hino, JP

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Patents Grantslast 30 patents

Information Patent Grant
Large-aperture single lens with aspherical surfaces
- Patent number RE34455
- Issue date Nov 23, 1993
- Konishiroku Photo Industry Co., Ltd.
- Norikazu Arai
- 359 - Optical: systems and elements
Information Patent Grant
Focusing means for a zoom lens group
- Patent number 4,830,475
- Issue date May 16, 1989
- Konishiroku Photo Industry Co., Ltd.
- Shozo Ishiyama
- G02 - OPTICS
Information Patent Grant
Zoom lens
- Patent number 4,501,475
- Issue date Feb 26, 1985
- Konishiroku Photo Industry Co., Ltd.
- Hisao Fujita
- G02 - OPTICS
Information Patent Grant
Compact, wide magnification-variable zoom lens system
- Patent number 4,498,741
- Issue date Feb 12, 1985
- Konishiroku Photo Industry Co., Ltd.
- Shozo Ishiyama
- G02 - OPTICS
Information Patent Grant
Large-aperture single lens with aspherical surfaces
- Patent number 4,449,792
- Issue date May 22, 1984
- Konishiroku Photo Industry Co., Ltd.
- Norikazu Arai
- G02 - OPTICS
Information Patent Grant
Wide magnification-variable range zoom lens system
- Patent number 4,437,732
- Issue date Mar 20, 1984
- Konishirokou Photo Industry Co., Ltd.
- Shozo Ishiyama
- G02 - OPTICS
Information Patent Grant
Compact zoom lens
- Patent number 4,350,416
- Issue date Sep 21, 1982
- Konishiroku Photo Industry Co., Ltd.
- Shozo Ishiyama
- G02 - OPTICS