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Inventor

Yoshiaki Iwahara

Inventor
Yokosuka, JP

Overview

15→
Patents
1988–1999
Patent span
Physics
Primary field (CPC G)

Patents· 15 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 them48%
H04NPictorial communication, e.g. television36%
G02BOptical elements, systems or apparatus12%
H01JElectric discharge tubes or discharge lamps4%
PatentTitleYear
5,870,225'Rear projection type display system'19995,758,940'Liquid crystal Projection display'19985,611,611'Rear projection type display system'19975,537,171'Liquid crystal projection display'19965,467,221'Multi-screen projector'19955,412,437'Projection type display device'19955,365,369'Two dimensional moire reduction type projection display'19945,355,187'Liquid crystal projection display'19945,200,854'Large-screen projection-type display'19935,085,495'Multi-screen projector'19925,011,277'Multi-screen projector'19914,969,731'Liquid crystal panel type projection display'19904,919,518'Multi-screen projector'19904,895,429'Rear projection apparatus'19904,729,031'Coupling system for image projection'1988

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1988–1999Patents assigned to HITACHI LTD (15)· patent assignee history
1988–1999Based in Yokosuka, JP· patent location history
1990Based in Kanagawa, JP· patent location history
1992Based in Yokohama, JP· patent location history
1993Patents assigned to HITACHI VIDEO & INF SYST (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI LTD151988–1999
HITACHI VIDEO & INF SYST11993
Locations
LocationPatentsSpan
Yokosuka, JP131988–1999
Yokohama, JP11992
Kanagawa, JP11990