Kouji Oizumi

Person

Kanagawa, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Compact varifocal lens
- Patent number 5,305,148
- Issue date Apr 19, 1994
- Canon Kabushiki Kaisha
- Keiji Ikemori
- G02 - OPTICS
Information Patent Grant
Compact zoom lens
- Patent number 5,270,866
- Issue date Dec 14, 1993
- Canon Kabushiki Kaisha
- Kouji Oizumi
- G02 - OPTICS
Information Patent Grant
Optical system for stabilizing an image
- Patent number 5,270,857
- Issue date Dec 14, 1993
- Canon Kabushiki Kaisha
- Kouji Oizumi
- G02 - OPTICS
Information Patent Grant
Small-sized camera
- Patent number 5,253,005
- Issue date Oct 12, 1993
- Canon Kabushiki Kaisha
- Takeshi Koyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Automatic multi-point distance measuring device
- Patent number 5,125,735
- Issue date Jun 30, 1992
- Canon Kabushiki Kaisha
- Kouji Oizumi
- G02 - OPTICS
Information Patent Grant
Variable magnification finder of real image type
- Patent number 5,055,868
- Issue date Oct 8, 1991
- Canon Kabushiki Kaisha
- Yoshinori Itoh
- G02 - OPTICS
Information Patent Grant
Finder device
- Patent number 4,957,356
- Issue date Sep 18, 1990
- Canon Kabushiki Kaisha
- Kouji Oizumi
- G02 - OPTICS
Information Patent Grant
Camera having telescopic capability
- Patent number 4,949,107
- Issue date Aug 14, 1990
- Canon Kabushiki Kaisha
- Nozomu Kitagishi
- G02 - OPTICS
Information Patent Grant
Photographic optical device with variable magnification
- Patent number 4,871,238
- Issue date Oct 3, 1989
- Canon Kabushiki Kaisha
- Yasuhisa Sato
- G02 - OPTICS
Information Patent Grant
Finder of variable magnification
- Patent number 4,842,395
- Issue date Jun 27, 1989
- Canon Kabushiki Kaisha
- Yasuhisa Sato
- G02 - OPTICS
Information Patent Grant
Variable magnification optical system
- Patent number 4,830,474
- Issue date May 16, 1989
- Canon Kabushiki Kaisha
- Hiroki Nakayama
- G02 - OPTICS
Information Patent Grant
Conversion lens releasably attached behind master lens
- Patent number 4,770,508
- Issue date Sep 13, 1988
- Canon Kabushiki Kaisha
- Yasuyuki Yamada
- G02 - OPTICS
Information Patent Grant
View finder of variable magnification
- Patent number 4,757,336
- Issue date Jul 12, 1988
- Canon Kabushiki Kaisha
- Hiroki Nakayama
- G02 - OPTICS
Information Patent Grant
Variable power finder
- Patent number 4,751,539
- Issue date Jun 14, 1988
- Canon Kabushiki Kaisha
- Yasuyuki Yamada
- G02 - OPTICS
Information Patent Grant
Zoom lens of short total length
- Patent number 4,726,668
- Issue date Feb 23, 1988
- Canon Kabushiki Kaisha
- Hiroki Nakayama
- G02 - OPTICS
Information Patent Grant
Flash device for camera
- Patent number 4,702,581
- Issue date Oct 27, 1987
- Canon Kabushiki Kaisha
- Yasuyuki Yamada
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Beam splitter for changing optical paths small tilt
- Patent number 4,697,882
- Issue date Oct 6, 1987
- Canon Kabushiki Kaisha
- Yasuhisa Sato
- G02 - OPTICS
Information Patent Grant
Compact zoom lens with short back focal distance
- Patent number 4,652,091
- Issue date Mar 24, 1987
- Canon Kabushiki Kaisha
- Kouji Oizumi
- G02 - OPTICS
Information Patent Grant
Rear conversion lens
- Patent number 4,643,536
- Issue date Feb 17, 1987
- Canon Kabushiki Kaisha
- Yasuyuki Yamada
- G02 - OPTICS

Kouji Oizumi

Person

Patents Grantslast 30 patents

Compact varifocal lens

Compact zoom lens

Optical system for stabilizing an image

Small-sized camera

Automatic multi-point distance measuring device

Variable magnification finder of real image type

Finder device

Camera having telescopic capability

Photographic optical device with variable magnification

Finder of variable magnification

Variable magnification optical system

Conversion lens releasably attached behind master lens

View finder of variable magnification

Variable power finder

Zoom lens of short total length

Flash device for camera

Beam splitter for changing optical paths small tilt

Compact zoom lens with short back focal distance

Rear conversion lens