Inventor

Kiyoshi Iizuka

Inventor

Kanagawa, JP

Overview

12→

Patents

1980–2006

Patent span

Physics

Primary field (CPC G)

Patents· 12 as inventor

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

G03Bprimary

G03BApparatus or arrangements for taking photographs or for projecting or viewing them33%

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein24%

G02BOptical elements, systems or apparatus14%

B24BMachines, devices, or processes for grinding or polishing5%

G01DMeasuring not specially adapted for a specific variable5%

G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices5%

H04NPictorial communication, e.g. television5%

H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h105%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests5%

PatentTitleYear

7,108,580'Method and device for simulation, method and device for polishing, method and device for preparing control parameters or control program, polishing system, recording medium, and method of manufacturing semiconductor device'2006 5,136,409'Liquid crystal device having at least two zones having different diffusion characteristics'1992 5,122,888'Focusing plate having phase grating formed by using liquid crystal'1992 4,795,238'Liquid crystal focusing screen having different groups of electrodes'1989 4,711,547'Display device'1987 4,606,612'Optical phase filter using liquid crystal'1986 4,586,802'Camera capable of special effects photography'1986 4,586,029'Blur detecting device'1986 4,567,123'Diffusing plate'1986 4,427,265'Diffusion plate'1984 4,421,398'Focussing plate'1983 4,229,750'Information output unit'1980

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1980–1992Patents assigned to CANON KK (11)· patent assignee history

1980Based in Kawasaki, JP· patent location history

1983–1992Based in Yokohama, JP· patent location history

1986–1992Based in Kanagawa, JP· patent location history

2006Patents assigned to NIKON CORP (1)· patent assignee history

2006Based in Tokyo, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
CANON KK	11	1980–1992
NIKON CORP	1	2006

Locations

Location	Patents	Span
Kanagawa, JP	6	1986–1992
Yokohama, JP	4	1983–1992
Tokyo, JP	1	2006
Kawasaki, JP	1	1980