Hisashi Tokumaru

Person

Osaka, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Illumination optical system and projector using same
- Patent number 6,429,975
- Issue date Aug 6, 2002
- Minolta Co., Ltd.
- Yasumasa Sawai
- G02 - OPTICS
Information Patent Grant
Camera having a varifocal lens
- Patent number 6,339,510
- Issue date Jan 15, 2002
- Minolta Co., Ltd.
- Nobuyuki Taniguchi
- G02 - OPTICS
Information Patent Grant
Camera having a varifocal lens
- Patent number 6,018,631
- Issue date Jan 25, 2000
- Minolta Co., Ltd.
- Nobuyuki Taniguchi
- G02 - OPTICS
Information Patent Grant
Camera having a varifocal lens
- Patent number 5,640,223
- Issue date Jun 17, 1997
- Minolta Camera Kabushiki Kaisha
- Nobuyuki Taniguchi
- G02 - OPTICS
Information Patent Grant
Camera having a varifocal lens
- Patent number 5,369,460
- Issue date Nov 29, 1994
- Minolta Camera Kabushiki Kaisha
- Nobuyuki Taniguchi
- G02 - OPTICS
Information Patent Grant
Camera system with zoom lens having presettable focal lengths
- Patent number 5,365,297
- Issue date Nov 15, 1994
- Minolta Camera Kabushiki Kaisha
- Tetsuya Arimoto
- G02 - OPTICS
Information Patent Grant
Compact size zoom lens system
- Patent number 5,327,290
- Issue date Jul 5, 1994
- Minolta Camera Kabushiki Kaisha
- Akira Fukushima
- G02 - OPTICS
Information Patent Grant
Camera with multiple lens driving modes
- Patent number 5,274,409
- Issue date Dec 28, 1993
- Minolta Camera Kabushiki Kaisha
- Hisashi Tokumaru
- G02 - OPTICS
Information Patent Grant
Camera having a varifocal lens
- Patent number 5,274,414
- Issue date Dec 28, 1993
- Minolta Camera Kabushiki Kaisha
- Nobuyuki Taniguchi
- G02 - OPTICS
Information Patent Grant
Camera system which compensates for defocusing during operation
- Patent number 5,258,802
- Issue date Nov 2, 1993
- Minolta Camera Kabushiki Kaisha
- Tetsuya Arimoto
- G02 - OPTICS
Information Patent Grant
Viewfinder framing device for zoom lens camera
- Patent number 5,196,877
- Issue date Mar 23, 1993
- Minolta Camera Kabushiki Kaisha
- Hiromu Mukai
- G02 - OPTICS
Information Patent Grant
Compact-size zoom lens system
- Patent number 5,153,777
- Issue date Oct 6, 1992
- Minolta Camera Co., Ltd.
- Takashi Okada
- G02 - OPTICS
Information Patent Grant
Zoom camera
- Patent number 5,122,825
- Issue date Jun 16, 1992
- Minolta Camera Kabushiki Kaisha
- Hisashi Tokumaru
- G02 - OPTICS
Information Patent Grant
Zoom lens system having high zoom ratio ranging to wide field angle
- Patent number 5,105,311
- Issue date Apr 14, 1992
- Minolta Camera Kabushiki Kaisha
- Hisashi Tokumaru
- G02 - OPTICS
Information Patent Grant
Focus condition detecting device
- Patent number 5,084,722
- Issue date Jan 28, 1992
- Minolta Camera Kabushiki Kaisha
- Nobuyuki Taniguchi
- G02 - OPTICS
Information Patent Grant
Zoom camera
- Patent number 4,951,075
- Issue date Aug 21, 1990
- Minolta Camera Kabushiki Kaisha
- Hisashi Tokumaru
- G02 - OPTICS
Information Patent Grant
Focus detection apparatus
- Patent number 4,916,473
- Issue date Apr 10, 1990
- Minolta Camera Kabushiki Kaisha
- Hiromu Mukai
- G02 - OPTICS
Information Patent Grant
System for detecting the focus condition of a cata-dioptric lens an...
- Patent number 4,908,505
- Issue date Mar 13, 1990
- Minolta Camera Kabushiki Kaisha
- Nobuyuki Taniguchi
- G02 - OPTICS
Information Patent Grant
Focus condition detecting device
- Patent number 4,903,065
- Issue date Feb 20, 1990
- Minolta Camera Kabushiki Kaisha
- Nobuyuki Taniguchi
- G02 - OPTICS
Information Patent Grant
Exposure controlling system and interchangeable lens therefor
- Patent number 4,878,076
- Issue date Oct 31, 1989
- Minolta Camera Kabushiki Kaisha
- Nobuyuki Taniguchi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Zoom lens system
- Patent number 4,846,562
- Issue date Jul 11, 1989
- Minolta Camera Kabushiki Kaisha
- Hisashi Tokumaru
- G02 - OPTICS
Information Patent Grant
Zoom lens system
- Patent number 4,844,600
- Issue date Jul 4, 1989
- Minolta Camera Kabushiki Kaisha
- Hisashi Tokumaru
- G02 - OPTICS
Information Patent Grant
Inverted-telephoto type wide angle lens system
- Patent number 4,806,003
- Issue date Feb 21, 1989
- Minolta Camera Kabushiki Kaisha
- Hiromu Mukai
- G02 - OPTICS
Information Patent Grant
Focus detection apparatus
- Patent number 4,794,416
- Issue date Dec 27, 1988
- Minolta Camera Kabushiki Kaisha
- Hiromu Mukai
- G02 - OPTICS
Information Patent Grant
Telephoto lens system with three relatively shiftable lens groups
- Patent number 4,764,000
- Issue date Aug 16, 1988
- Minolta Camera Kabushiki Kaisha
- Hisashi Tokumaru
- G02 - OPTICS
Information Patent Grant
Zoom lens system
- Patent number 4,759,617
- Issue date Jul 26, 1988
- Minolta Camera Kabushiki Kaisha
- Hisashi Tokumaru
- G02 - OPTICS
Information Patent Grant
Zoom lens system
- Patent number 4,636,040
- Issue date Jan 13, 1987
- Minolta Camera Kabushiki Kaisha
- Hisashi Tokumaru
- G02 - OPTICS
Information Patent Grant
Zoom lens system
- Patent number 4,591,235
- Issue date May 27, 1986
- Minolta Camera Kabushiki Kaisha
- Hisashi Tokumaru
- G02 - OPTICS
Information Patent Grant
Zoom lens system
- Patent number 4,516,839
- Issue date May 14, 1985
- Minolta Camera Kabushiki Kaisha
- Hisashi Tokumaru
- G02 - OPTICS
Information Patent Grant
Optical projection system
- Patent number 4,474,459
- Issue date Oct 2, 1984
- Minolta Camera Kabushiki Kaisha
- Hisashi Tokumaru
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Hisashi Tokumaru

Person

Patents Grantslast 30 patents

Illumination optical system and projector using same

Camera having a varifocal lens

Camera having a varifocal lens

Camera having a varifocal lens

Camera having a varifocal lens

Camera system with zoom lens having presettable focal lengths

Compact size zoom lens system

Camera with multiple lens driving modes

Camera having a varifocal lens

Camera system which compensates for defocusing during operation

Viewfinder framing device for zoom lens camera

Compact-size zoom lens system

Zoom camera

Zoom lens system having high zoom ratio ranging to wide field angle

Focus condition detecting device

Zoom camera

Focus detection apparatus

System for detecting the focus condition of a cata-dioptric lens an...

Focus condition detecting device

Exposure controlling system and interchangeable lens therefor

Zoom lens system

Zoom lens system

Inverted-telephoto type wide angle lens system

Focus detection apparatus

Telephoto lens system with three relatively shiftable lens groups

Zoom lens system

Zoom lens system

Zoom lens system

Zoom lens system

Optical projection system