Ryuji Tokuda

Person

Kanagawa, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Display device having conical transparent members covering electrol...
- Patent number 6,858,983
- Issue date Feb 22, 2005
- Canon Kabushiki Kaisha
- Noritaka Mochizuki
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Distance measuring device
- Patent number 4,720,723
- Issue date Jan 19, 1988
- Canon Kabushiki Kaisha
- Yoshihiro Harunari
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Input circuit for distance measuring apparatus
- Patent number 4,701,048
- Issue date Oct 20, 1987
- Canon Kabushiki Kaisha
- Ryuji Tokuda
- G01 - MEASURING TESTING
Information Patent Grant
Motor drive control circuit
- Patent number 4,550,992
- Issue date Nov 5, 1985
- Canon Kabushiki Kaisha
- Masanori Ohtsuka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Battery voltage checking apparatus
- Patent number 4,547,770
- Issue date Oct 15, 1985
- Canon Kabushiki Kaisha
- Ryoichi Suzuki
- G08 - SIGNALLING
Information Patent Grant
Camera with a display device for displaying both object distance in...
- Patent number 4,544,254
- Issue date Oct 1, 1985
- Canon Kabushiki Kaisha
- Akira Egawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Shutter release device
- Patent number 4,542,970
- Issue date Sep 24, 1985
- Canon Kabushiki Kaisha
- Ryoichi Suzuki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Automatic focusing device
- Patent number 4,537,489
- Issue date Aug 27, 1985
- Canon Kabushiki Kaisha
- Ryoichi Suzuki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Exposure control device for camera
- Patent number 4,512,643
- Issue date Apr 23, 1985
- Canon Kabushiki Kaisha
- Ryuji Tokuda
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Battery check device for camera
- Patent number 4,502,774
- Issue date Mar 5, 1985
- Canon Kabushiki Kaisha
- Ryoichi Suzuki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Indicating apparatus for camera
- Patent number 4,500,193
- Issue date Feb 19, 1985
- Canon Kabushiki Kaisha
- Ryoichi Suzuki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrically operated camera and disabling device therefor
- Patent number 4,482,236
- Issue date Nov 13, 1984
- Canon Kabushiki Kaisha
- Hiroyoshi Tsuzuki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Brightness warning device for camera
- Patent number 4,482,238
- Issue date Nov 13, 1984
- Canon Kabushiki Kaisha
- Ryuji Tokuda
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Temperature compensation system of light measuring circuit
- Patent number 4,479,708
- Issue date Oct 30, 1984
- Canon Kabushiki Kaisha
- Ryuji Tokuda
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Driving circuit for a coil
- Patent number 4,459,574
- Issue date Jul 10, 1984
- Canon Kabushiki Kaisha
- Ryuji Tokuda
- G05 - CONTROLLING REGULATING
Information Patent Grant
Auto-focus device for camera
- Patent number 4,453,812
- Issue date Jun 12, 1984
- Canon Kabushiki Kaisha
- Ryoichi Suzuki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Distance measuring system
- Patent number 4,429,967
- Issue date Feb 7, 1984
- Canon Kabushiki Kaisha
- Ryuji Tokuda
- G02 - OPTICS
Information Patent Grant
Automatic focus adjusting apparatus for camera
- Patent number 4,425,031
- Issue date Jan 10, 1984
- Canon Kabushiki Kaisha
- Shuichi Tamura
- G02 - OPTICS
Information Patent Grant
Cameras and circuits for sensing the action of camera shutters
- Patent number 4,425,032
- Issue date Jan 10, 1984
- Canon Kabushiki Kaisha
- Ryoichi Suzuki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Motor drive circuit for camera
- Patent number 4,415,249
- Issue date Nov 15, 1983
- Canon Kabushiki Kaisha
- Hiroyoshi Tsuzuki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Exposure amount control device
- Patent number 4,375,321
- Issue date Mar 1, 1983
- Canon Kabushiki Kaisha
- Ryoichi Suzuki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Signal processing circuitry for a distance measuring system
- Patent number 4,365,878
- Issue date Dec 28, 1982
- Canon, Inc.
- Ryuji Tokuda
- G02 - OPTICS
Information Patent Grant
Camera provided with automatic focus adjusting device
- Patent number 4,350,418
- Issue date Sep 21, 1982
- Canon Kabushiki Kaisha
- Tetsuya Taguchi
- G02 - OPTICS
Information Patent Grant
Circuits for flash equipment
- Patent number 4,317,070
- Issue date Feb 23, 1982
- Canon Kabushiki Kaisha
- Ryuji Tokuda
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Signal processing circuitry for a distance measuring system
- Patent number 4,300,824
- Issue date Nov 17, 1981
- Canon Inc.
- Ryuji Tokuda
- G02 - OPTICS
Information Patent Grant
Exposure adjusting device for camera system
- Patent number 4,206,987
- Issue date Jun 10, 1980
- Canon Kabushiki Kaisha
- Akio Sunouchi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
Display device
- Publication number 20020105267
- Publication date Aug 8, 2002
- Noritaka Mochizuki
- H01 - BASIC ELECTRIC ELEMENTS

Ryuji Tokuda

Person

Patents Grantslast 30 patents

Display device having conical transparent members covering electrol...

Distance measuring device

Input circuit for distance measuring apparatus

Motor drive control circuit

Battery voltage checking apparatus

Camera with a display device for displaying both object distance in...

Shutter release device

Automatic focusing device

Exposure control device for camera

Battery check device for camera

Indicating apparatus for camera

Electrically operated camera and disabling device therefor

Brightness warning device for camera

Temperature compensation system of light measuring circuit

Driving circuit for a coil

Auto-focus device for camera

Distance measuring system

Automatic focus adjusting apparatus for camera

Cameras and circuits for sensing the action of camera shutters

Motor drive circuit for camera

Exposure amount control device

Signal processing circuitry for a distance measuring system

Camera provided with automatic focus adjusting device

Circuits for flash equipment

Signal processing circuitry for a distance measuring system

Exposure adjusting device for camera system

Patents Applicationslast 30 patents

Display device