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Inventor

Keiya Sato

Inventor
Hitachi, JP

Overview

2→
Patents
1997–1998
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.

E01Cprimary
E01CConstruction of, or surfaces for, roads, sports grounds, or the like100%
PatentTitleYear
5,809,702'Surface layer ground establishment block, surface layer ground using the same and method for utilizing the same'19985,692,343'Surface layer ground establishment block, surface layer ground using the same and method for utilizing the same'1997

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1997–1998Patents assigned to HITACHI LTD (2)· patent assignee history
1997–1998Patents assigned to HITACHI PLANT ENG & CONSTR CO (2)· patent assignee history
1997–1998Based in Hitachi, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI LTD21997–1998
HITACHI PLANT ENG & CONSTR CO21997–1998
Locations
LocationPatentsSpan
Hitachi, JP21997–1998