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Inventor

Masahiko Siguyama

Inventor
Kobe, JP

Overview

1→
Patents
1993
Patent span
Fixed constructions
Primary field (CPC E)

Patents· 1 as inventor

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

E21Dprimary
E21DShafts100%
PatentTitleYear
5,221,160'Subterranean connecting method for construction of shield tunnel and connecting apparatus therefor'1993

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1993Patents assigned to MITSUBISHI HEAVY IND LTD (1)· patent assignee history
1993Patents assigned to SHIMIZUO CONSTRUCTION CO (1)· patent assignee history
1993Based in Kobe, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
MITSUBISHI HEAVY IND LTD11993
SHIMIZUO CONSTRUCTION CO11993
Locations
LocationPatentsSpan
Kobe, JP11993