Inventor · disambiguated record
Fumitaka Kumai
Also filed as: KUMAI FUMITAKA
4 granted patents·47 citations·filing 1986–1988
75Inventor score
Technology areasE21D
Files withTEKKEN CONSTR CO4
Top patents by PatentIndex Score
4 records- 0159US4786206ALining tunnel wall made by shield type tunnel excavatorTEKKEN CONSTR CO·Filed 1987·Granted Nov 22, 1988·24 cites·10 claims
- 0252US4799824AMethod of making covering wall of tunnel made by shield type excavatorTEKKEN CONSTR CO·Filed 1986·Granted Jan 24, 1989·17 cites·7 claims
- 0330US4863313AMethod for lining tunnel wall formed by shield excavationTEKKEN CONSTR CO·Filed 1988·Granted Sep 5, 1989·4 cites·7 claims
- 0427US4913587AForm assembly for making covering wall of tunnel made by shield type excavatorTEKKEN CONSTR CO·Filed 1988·Granted Apr 3, 1990·2 cites·13 claims
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