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Inventor

Yutaka Kashima

Inventor
Tokyo, JP

Overview

4→
Patents
1986–1997
Patent span
Fixed constructions
Primary field (CPC E)

Patents· 4 as inventor

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

E21Dprimary
E21DShafts75%
E02DFoundations25%
PatentTitleYear
5,697,676'Shield tunnel boring machine'19975,032,039'Underground excavator'19914,797,031'Caisson sinking method'19894,607,889'Shield tunnel boring machine'1986

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1986–1991Patents assigned to DAIHO CONSTRUCTION CO LTD (3)· patent assignee history
1986–1997Based in Tokyo, JP· patent location history
1997Patents assigned to DAIHO CORP (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
DAIHO CONSTRUCTION CO LTD31986–1991
DAIHO CORP11997
Locations
LocationPatentsSpan
Tokyo, JP41986–1997