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Inventor

Toshiaki Hirai

Inventor
Yotsukaido, JP

Overview

10→
Patents
1990–1999
Patent span
Physics
Primary field (CPC G)

Patents· 10 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 them67%
G01CMeasuring distances, levels or bearings8%
G02BOptical elements, systems or apparatus8%
G06FElectric digital data processing8%
G11CStatic stores8%
PatentTitleYear
5,997,188'Plane shutter'19995,826,124'Focal plane shutter'19985,719,663'Range finder apparatus'19985,608,488'Data processing device for a camera'19975,559,569'Motor driven shutter having focus adjusting and stop setting means'19965,420,660'Motor driven shutter activated by single motor having controllable clockwise and counterclockwise rotations'19955,198,849'Remote controller for a camera'19935,032,859'Shutter with lens drive mechanism'19914,985,724'Automatic focus/exposure operation apparatus for camera'19914,937,603'Multiple exposure photographic device for camera'1990

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1990–1996Patents assigned to SEIKOSHA KK (6)· patent assignee history
1990–1999Based in Yotsukaido, JP· patent location history
1991–1996Based in Chiba, JP· patent location history
1997–1999Patents assigned to SEIKO PRECISION KK (4)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SEIKOSHA KK61990–1996
SEIKO PRECISION KK41997–1999
Locations
LocationPatentsSpan
Yotsukaido, JP61990–1999
Chiba, JP41991–1996