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Inventor

Kazumitsu Takezawa

Inventor
Yokohama, JP

Overview

8→
Patents
1991–2004
Patent span
Physics
Primary field (CPC G)

Patents· 8 as inventor

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

G02Bprimary
G02BOptical elements, systems or apparatus67%
G01DMeasuring not specially adapted for a specific variable11%
G03BApparatus or arrangements for taking photographs or for projecting or viewing them11%
H03MCoding11%
PatentTitleYear
6,742,940'Shading device and lens barrel'20046,542,313'Lens barrel position detecting device and method'20036,239,923'Lens barrel having an iris stop unit'20016,002,532'Lens barrel'19995,926,323'Lens barrel with interlocking key'19995,815,094'Position detecting device'19985,627,683'Lens barrel having a biasing member to prevent backlash between lens unit cam mechanisms'19975,041,855'Lens assembly for automatic focusing cameras'1991

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1991Patents assigned to KANNO HIDEO (1)· patent assignee history
1991Patents assigned to OHMORI SACHIO (1)· patent assignee history
1991Patents assigned to TAKEZAWA KAZUMITSU (1)· patent assignee history
1991Based in Shinagawa-ku, JP· patent location history
1997–2004Patents assigned to NIKON CORP (7)· patent assignee history
1997–2004Based in Yokohama, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
NIKON CORP71997–2004
KANNO HIDEO11991
OHMORI SACHIO11991
TAKEZAWA KAZUMITSUself11991
Locations
LocationPatentsSpan
Yokohama, JP71997–2004
Shinagawa-ku, JP11991