Ryoichi Yoshikawa

Person

Yokohama, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Electro-optic display device
- Patent number 4,656,466
- Issue date Apr 7, 1987
- Canon Kabushiki Kaisha
- Masaaki Yoshida
- G02 - OPTICS
Information Patent Grant
Charged particle beam exposure apparatus
- Patent number 4,647,782
- Issue date Mar 3, 1987
- Tokyo Shibaura Denki Kabushiki Kaisha
- Hirotsugu Wada
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Apparatus for inspecting a circuit pattern drawn on a photomask use...
- Patent number 4,559,603
- Issue date Dec 17, 1985
- Tokyo Shibaura Denki Kabushiki Kaisha
- Ryoichi Yoshikawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Target body position measuring method for charged particle beam fin...
- Patent number 4,558,225
- Issue date Dec 10, 1985
- Tokyo Shibaura Denki Kabushiki Kaisha
- Mineo Gotou
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Flash photography apparatus
- Patent number 4,542,974
- Issue date Sep 24, 1985
- Canon Kabushiki Kaisha
- Ryoichi Yoshikawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Flash apparatus with power supply control device
- Patent number 4,522,479
- Issue date Jun 11, 1985
- Canon Kabushiki Kaisha
- Masanori Yamada
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Wind-up device for camera
- Patent number 4,466,719
- Issue date Aug 21, 1984
- Canon Kabushiki Kaisha
- Shosuke Haraguchi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Single lens reflex camera
- Patent number 4,410,252
- Issue date Oct 18, 1983
- Canon Kabushiki Kaisha
- Ryoichi Yoshikawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electron beam exposure system
- Patent number 4,410,800
- Issue date Oct 18, 1983
- Tokyo Shibaura Denki Kabushiki Kaisha
- Ryoichi Yoshikawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Safety device for a camera with a winding motor
- Patent number 4,400,073
- Issue date Aug 23, 1983
- Canon Kabushiki Kaisha
- Yoichi Tosaka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Camera
- Patent number 4,389,111
- Issue date Jun 21, 1983
- Canon Kabushiki Kaisha
- Masanori Uchidoi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Film magazine holding device for camera
- Patent number 4,361,391
- Issue date Nov 30, 1982
- Canon Kabushiki Kaisha
- Shosuke Haraguchi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Information indicating device for single lens reflex camera with bu...
- Patent number 4,322,148
- Issue date Mar 30, 1982
- Canon Kabushiki Kaisha
- Ryoichi Yoshikawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Photographic camera with an operation mode display device
- Patent number 4,306,784
- Issue date Dec 22, 1981
- Canon Kabushiki Kaisha
- Nobuo Tezuka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Camera body
- Patent number 4,279,494
- Issue date Jul 21, 1981
- Canon Kabushiki Kaisha
- Ryoichi Yoshikawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Pentaprism mount assembly
- Patent number 4,238,151
- Issue date Dec 9, 1980
- Canon Kabushiki Kaisha
- Ryoichi Yoshikawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Shutter operation control device for a photographic camera
- Patent number 4,181,417
- Issue date Jan 1, 1980
- Canon Kabushiki Kaisha
- Yoji Sugiura
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Photographic camera with an operation mode display device
- Patent number 4,114,173
- Issue date Sep 12, 1978
- Canon Kabushiki Kaisha
- Nobuo Tezuka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Ryoichi Yoshikawa

Person

Patents Grantslast 30 patents

Electro-optic display device

Charged particle beam exposure apparatus

Apparatus for inspecting a circuit pattern drawn on a photomask use...

Target body position measuring method for charged particle beam fin...

Flash photography apparatus

Flash apparatus with power supply control device

Wind-up device for camera

Single lens reflex camera

Electron beam exposure system

Safety device for a camera with a winding motor

Camera

Film magazine holding device for camera

Information indicating device for single lens reflex camera with bu...

Photographic camera with an operation mode display device

Camera body

Pentaprism mount assembly

Shutter operation control device for a photographic camera

Photographic camera with an operation mode display device