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Inventor

Tetsuro Tatsuhama

Inventor
Osaka, JP

Overview

2→
Patents
1983–1987
Patent span
Fixed constructions
Primary field (CPC E)

Patents· 2 as inventor

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

E21Cprimary
E21CMining or quarrying50%
G01BMeasuring length, thickness or similar linear dimensions50%
PatentTitleYear
4,711,501'Rock crushing device'19874,392,744'Method of and apparatus for determining angular and transversal displacements of shield machine and succeeding pipe'1983

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1983Patents assigned to OKUMURA CORP (1)· patent assignee history
1983Based in Takarazuka, JP· patent location history
1987Patents assigned to OKUMURA MACHINERY CORP (1)· patent assignee history
1987Patents assigned to SEIBU POLYMER KASEI KK (1)· patent assignee history
1987Based in Osaka, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
OKUMURA CORP11983
OKUMURA MACHINERY CORP11987
SEIBU POLYMER KASEI KK11987
Locations
LocationPatentsSpan
Osaka, JP11987
Takarazuka, JP11983