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Inventor

Iwao Uchizaki

Inventor
Tokyo, JP

Overview

4→
Patents
1976–1991
Patent span
Performing operations
Primary field (CPC B)

Patents· 4 as inventor

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

C04Bprimary
C04BLime, magnesia33%
B28BShaping clay or other ceramic compositions17%
B28DWorking stone or stone-like materials17%
E04GScaffolding17%
Y10TTechnical subjects covered by former us classification17%
PatentTitleYear
4,981,626'Method of forming dense concrete surface layer'19914,508,572'Cement composition for laying underwater'19854,487,633'Water-inseparable concrete composition'19843,998,201'Concrete breaker'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1985Patents assigned to TAKENAKA KOMUTEN CO (3)· patent assignee history
1976–1991Based in Tokyo, JP· patent location history
1984–1985Patents assigned to SANKYO CHEM IND LTD (2)· patent assignee history
1984–1985Patents assigned to TAKENAKA DOBOKU (2)· patent assignee history
1991Patents assigned to TAKENAKA CORP (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
TAKENAKA KOMUTEN CO31976–1985
SANKYO CHEM IND LTD21984–1985
TAKENAKA DOBOKU21984–1985
TAKENAKA CORP11991
Locations
LocationPatentsSpan
Tokyo, JP41976–1991