Assignee
TEKKEN CONSTR CO
24 granted patents·330 citations·filing 1974–1988
Top patents by PatentIndex Score
24 records- 0191US4152027AShield type hydraulic tunnel boring machineTEKKEN CONSTR CO·Filed 1978·Granted May 1, 1979·40 cites·16 claims
- 0285US4116487ADevice for removing gravels and the like from discharged mud in hydraulic tunnel boring systemTEKKEN CONSTR CO·Filed 1977·Granted Sep 26, 1978·27 cites·3 claims
- 0378US4167290AShield type hydraulic tunnel boring machineTEKKEN CONSTR CO·Filed 1977·Granted Sep 11, 1979·45 cites·7 claims
- 0472US4040666AApparatus and method of shield excavationTEKKEN CONSTR CO·Filed 1976·Granted Aug 9, 1977·22 cites·6 claims
- 0561US4671362AAutomatic fire extinguisher with infrared ray responsive type fire detectorTEKKEN CONSTR CO·Filed 1986·Granted Jun 9, 1987·34 cites·6 claims
- 0659US4786206ALining tunnel wall made by shield type tunnel excavatorTEKKEN CONSTR CO·Filed 1987·Granted Nov 22, 1988·24 cites·10 claims
- 0759US4057971ABrush-type packing means for shield excavatorTEKKEN CONSTR CO·Filed 1976·Granted Nov 15, 1977·10 cites·8 claims
- 0856US4072021AMethod of driving and forming a tunnel with hydraulic boring machineTEKKEN CONSTR CO·Filed 1976·Granted Feb 7, 1978·9 cites·6 claims
- 0952US4799824AMethod of making covering wall of tunnel made by shield type excavatorTEKKEN CONSTR CO·Filed 1986·Granted Jan 24, 1989·17 cites·7 claims
- 1052US4142763AAttitude control means of tunnel boring machine shieldTEKKEN CONSTR CO·Filed 1977·Granted Mar 6, 1979·19 cites·3 claims
- 1146US4068486AAutomatic tunnel face hydraulic pressure controlling apparatus in shield type hydraulic tunnel boring systemTEKKEN CONSTR CO·Filed 1977·Granted Jan 17, 1978·6 cites·4 claims
- 1245US4052859AMethod and apparatus of completing slurry shield tunneling at vertical shaftTEKKEN CONSTR CO·Filed 1976·Granted Oct 11, 1977·6 cites·13 claims
- 1342US3946605AApparatus and method of measuring fluctuations of excavated mud amount in a slurry lineTEKKEN CONSTR CO·Filed 1974·Granted Mar 30, 1976·13 cites·12 claims
- 1441US4648462AAutomatic fire extinguisher with infrared ray responsive type fire detectorTEKKEN CONSTR CO·Filed 1986·Granted Mar 10, 1987·13 cites·11 claims
- 1540US4111486AMethod and system for performing attitude control of tunnel excavating shieldTEKKEN CONSTR CO·Filed 1977·Granted Sep 5, 1978·6 cites·13 claims
- 1637US4068484AAutomatic tunnel face hydraulic pressure controlling apparatus in shield type hydraulic tunnel boring systemTEKKEN CONSTR CO·Filed 1977·Granted Jan 17, 1978·5 cites·3 claims
- 1734US4041713AMethod and apparatus for starting a tunneling machine from an initial placement within a vertical shaft sunk into the ground and provided with a starting portTEKKEN CONSTR CO·Filed 1976·Granted Aug 16, 1977·5 cites·17 claims
- 1832US4591297AMethod of building strengthened, embanked foundationTEKKEN CONSTR CO·Filed 1984·Granted May 27, 1986·7 cites·6 claims
- 1932US4519730AMethod for constructing underground structureTEKKEN CONSTR CO·Filed 1984·Granted May 28, 1985·7 cites·5 claims
- 2031US4384807AExcavation controlling method in hydraulic shield tunnellingTEKKEN CONSTR CO·Filed 1980·Granted May 24, 1983·2 cites·7 claims
- 2130US4863313AMethod for lining tunnel wall formed by shield excavationTEKKEN CONSTR CO·Filed 1988·Granted Sep 5, 1989·4 cites·7 claims
- 2227US4913587AForm assembly for making covering wall of tunnel made by shield type excavatorTEKKEN CONSTR CO·Filed 1988·Granted Apr 3, 1990·2 cites·13 claims
- 2325US4610572AMethod of building strengthened embankment bodyTEKKEN CONSTR CO·Filed 1985·Granted Sep 9, 1986·4 cites·7 claims
- 2421US4110992ABrush-type packing means for shield excavatorTEKKEN CONSTR CO·Filed 1976·Granted Sep 5, 1978·3 cites·12 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →