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Inventor

Akishige Shirasawa

Inventor
Tokyo, JP

Overview

2→
Patents
1984–1990
Patent span
Physics
Primary field (CPC G)

Patents· 2 as inventor

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

G01Cprimary
G01CMeasuring distances, levels or bearings67%
G02BOptical elements, systems or apparatus33%
PatentTitleYear
4,947,048'Stereoscopic photographic measuring device'19904,470,664'Reflector device for use with optical distance measuring apparatus'1984

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1984Patents assigned to TOKYO OPTICAL (1)· patent assignee history
1984–1990Based in Tokyo, JP· patent location history
1990Patents assigned to TOPCON CORP (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
TOKYO OPTICAL11984
TOPCON CORP11990
Locations
LocationPatentsSpan
Tokyo, JP21984–1990