Inventor

Yukitoshi Ohkubo

Inventor

Yokohama, JP

Overview

13→

Patents

1979–1995

Patent span

Physics

Primary field (CPC G)

Patents· 13 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G02Fprimary

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein25%

G11BInformation storage based on relative movement between record carrier and transducer13%

B29CShaping or joining of plastics9%

B29DProducing particular articles from plastics or from substances in a plastic state9%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests9%

B29LIndexing scheme associated with subclass b29c, relating to particular articles6%

G02BOptical elements, systems or apparatus6%

G03GElectrography6%

C09KMaterials for miscellaneous applications, not provided for elsewhere3%

G03BApparatus or arrangements for taking photographs or for projecting or viewing them3%

PatentTitleYear

5,460,766'Process of making substrate for an optical recording medium'1995 5,432,770'Optical recording medium, method of reproducing recorded data of optical recording medium, and system for reproducing recorded data of optical recording medium'1995 5,308,235'Roll stamper and apparatus for forming a substrate for information recording medium'1994 5,148,302'Optical modulation element having two-dimensional phase type diffraction grating'1992 5,137,661'Process for producing optical recording medium'1992 4,878,742'Liquid crystal optical modulator'1989 4,856,869'Display element and observation apparatus having the same'1989 4,850,681'Optical modulation device'1989 4,822,146'Optical modulation element'1989 4,714,636'Liquid crystal device for color display'1987 4,671,642'Image forming apparatus'1987 4,448,867'Image forming method and device for same'1984 4,139,278'Liquid crystal display device'1979

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1979–1995Patents assigned to CANON KK (12)· patent assignee history

1979–1995Based in Yokohama, JP· patent location history

1992Patents assigned to FUJIWARA RYOJI (1)· patent assignee history

1992Patents assigned to ISHII TAKAYUKI (1)· patent assignee history

1992Patents assigned to KISHI ETSURO (1)· patent assignee history

1992Patents assigned to NAGANO AKIHIKO (1)· patent assignee history

1992Based in Shimomaruko, Ohta-ku, Tokyo, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
CANON KK	12	1979–1995
FUJIWARA RYOJI	1	1992
ISHII TAKAYUKI	1	1992
KISHI ETSURO	1	1992
NAGANO AKIHIKO	1	1992

Locations

Location	Patents	Span
Yokohama, JP	12	1979–1995
Shimomaruko, Ohta-ku, Tokyo, JP	1	1992