Yukitoshi Ohkubo

Person

Shimomaruko, Ohta-ku, Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Process of making substrate for an optical recording medium
- Patent number 5,460,766
- Issue date Oct 24, 1995
- Canon Kabushiki Kaisha
- Hirofumi Kamitakahara
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Optical recording medium, method of reproducing recorded data of op...
- Patent number 5,432,770
- Issue date Jul 11, 1995
- Canon Kabushiki Kaisha
- Masataka Yashima
- G11 - INFORMATION STORAGE
Information Patent Grant
Roll stamper and apparatus for forming a substrate for information...
- Patent number 5,308,235
- Issue date May 3, 1994
- Canon Kabushiki Kaisha
- Hirofumi Kamitakahara
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Optical modulation element having two-dimensional phase type diffra...
- Patent number 5,148,302
- Issue date Sep 15, 1992
- Akihiko Nagano
- G02 - OPTICS
Information Patent Grant
Process for producing optical recording medium
- Patent number 5,137,661
- Issue date Aug 11, 1992
- Canon Kabushiki Kaisha
- Osamu Kanome
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Liquid crystal optical modulator
- Patent number 4,878,742
- Issue date Nov 7, 1989
- Canon Kabushiki Kaisha
- Yukitoshi Ohkubo
- G02 - OPTICS
Information Patent Grant
Display element and observation apparatus having the same
- Patent number 4,856,869
- Issue date Aug 15, 1989
- Canon Kabushiki Kaisha
- Hajime Sakata
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Optical modulation device
- Patent number 4,850,681
- Issue date Jul 25, 1989
- Canon Kabushiki Kaisha
- Masao Yamanobe
- G02 - OPTICS
Information Patent Grant
Optical modulation element
- Patent number 4,822,146
- Issue date Apr 18, 1989
- Canon Kabushiki Kaisha
- Masato Yamanobe
- G02 - OPTICS
Information Patent Grant
Liquid crystal device for color display
- Patent number 4,714,636
- Issue date Dec 22, 1987
- Canon Kabushiki Kaisha
- Koujiro Yokono
- G02 - OPTICS
Information Patent Grant
Image forming apparatus
- Patent number 4,671,642
- Issue date Jun 9, 1987
- Canon Kabushiki Kaisha
- Yukitoshi Ohkubo
- G02 - OPTICS
Information Patent Grant
Image forming method and device for same
- Patent number 4,448,867
- Issue date May 15, 1984
- Canon Kabushiki Kaisha
- Yukitoshi Ohkubo
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Liquid crystal display device
- Patent number 4,139,278
- Issue date Feb 13, 1979
- Canon Kabushiki Kaisha
- Seiichi Matsumoto
- G02 - OPTICS

Yukitoshi Ohkubo

Person

Patents Grantslast 30 patents

Process of making substrate for an optical recording medium

Optical recording medium, method of reproducing recorded data of op...

Roll stamper and apparatus for forming a substrate for information...

Optical modulation element having two-dimensional phase type diffra...

Process for producing optical recording medium

Liquid crystal optical modulator

Display element and observation apparatus having the same

Optical modulation device

Optical modulation element

Liquid crystal device for color display

Image forming apparatus

Image forming method and device for same

Liquid crystal display device