Inventor

Osamu Umeda

Inventor

Gifu, JP

Overview

6→

Patents

1988–1995

Patent span

Physics

Primary field (CPC G)

Patents· 6 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 them31%

H04NPictorial communication, e.g. television31%

G02BOptical elements, systems or apparatus15%

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein15%

H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h108%

PatentTitleYear

5,398,160'Compact power module with a heat spreader'1995 5,042,921'Liquid crystal display apparatus'1991 4,941,732'Transmission type projection screen'1990 4,925,295'Projection display apparatus'1990 4,875,064'Projector apparatus with mirror means'1989 4,770,525'Liquid crystal projector'1988

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1988–1991Patents assigned to CASIO COMPUTER CO LTD (5)· patent assignee history

1988–1991Based in Gifu, JP· patent location history

1995Patents assigned to FUJITSU GENERAL LTD (1)· patent assignee history

1995Based in Kawasaki, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
CASIO COMPUTER CO LTD	5	1988–1991
FUJITSU GENERAL LTD	1	1995

Locations

Location	Patents	Span
Gifu, JP	5	1988–1991
Kawasaki, JP	1	1995