Assignee
ISEKI KAIHATSU KOKI
JP·43 granted patents·740 citations·filing 1980–1997
Top patents by PatentIndex Score
43 records- 0188US4311344AShield-type tunneling machine with toggle controlled bit plates in cutter discISEKI KAIHATSU KOKI·Filed 1980·Granted Jan 19, 1982·32 cites·4 claims
- 0287US4406498AShield tunneling method and machine thereforISEKI KAIHATSU KOKI·Filed 1981·Granted Sep 27, 1983·30 cites·12 claims
- 0386US4810377AClarification deviceISEKI KAIHATSU KOKI·Filed 1987·Granted Mar 7, 1989·56 cites·11 claims
- 0482US4624605AShield tunneling apparatusISEKI KAIHATSU KOKI·Filed 1984·Granted Nov 25, 1986·22 cites·3 claims
- 0571US4311411APipe jacking apparatusISEKI KAIHATSU KOKI·Filed 1980·Granted Jan 19, 1982·20 cites·4 claims
- 0670US5296915AMethod and apparatus for controlling direction of excavating machineISEKI KAIHATSU KOKI·Filed 1992·Granted Mar 22, 1994·31 cites·18 claims
- 0770US4662606APipe propelling deviceISEKI KAIHATSU KOKI·Filed 1985·Granted May 5, 1987·16 cites·4 claims
- 0869US4655493AShield tunneling machineISEKI KAIHATSU KOKI·Filed 1985·Granted Apr 7, 1987·37 cites·4 claims
- 0964US4964580ACrushing machineISEKI KAIHATSU KOKI·Filed 1989·Granted Oct 23, 1990·15 cites·7 claims
- 1064US4886396AExisting pipeline renewing method and apparatus thereforISEKI KAIHATSU KOKI·Filed 1988·Granted Dec 12, 1989·26 cites·36 claims
- 1162US5046903AMethod and apparatus for conducting operation in pipeISEKI KAIHATSU KOKI·Filed 1989·Granted Sep 10, 1991·25 cites·16 claims
- 1259US4869619AMethod for excavating hole and apparatus thereforISEKI KAIHATSU KOKI·Filed 1988·Granted Sep 26, 1989·15 cites·13 claims
- 1357US4692062AShield type tunneling machineISEKI KAIHATSU KOKI·Filed 1985·Granted Sep 8, 1987·26 cites·5 claims
- 1456US5393172AShield tunneling machineISEKI KAIHATSU KOKI·Filed 1993·Granted Feb 28, 1995·29 cites·4 claims
- 1555US4691787AEarth augerISEKI KAIHATSU KOKI·Filed 1986·Granted Sep 8, 1987·14 cites·6 claims
- 1653US5527135AMethod for injecting lubricant or back-filling material into a space between the outside of double-wall pipes and the ground in the pipe-jacking method and an apparatus thereforISEKI KAIHATSU KOKI·Filed 1994·Granted Jun 18, 1996·30 cites·17 claims
- 1753US5102201AShield tunnelling machineISEKI KAIHATSU KOKI·Filed 1990·Granted Apr 7, 1992·21 cites·9 claims
- 1852US5392897AConveyorISEKI KAIHATSU KOKI·Filed 1993·Granted Feb 28, 1995·14 cites·4 claims
- 1951US5061120ADirection correcting device for shield tunnelling machineISEKI KAIHATSU KOKI·Filed 1990·Granted Oct 29, 1991·19 cites·6 claims
- 2049US5078545AMethod for boring hole in the ground and apparatus thereforISEKI KAIHATSU KOKI·Filed 1990·Granted Jan 7, 1992·17 cites·12 claims
- 2149US4915543AExisting pipeline renewing method and apparatus thereforISEKI KAIHATSU KOKI·Filed 1989·Granted Apr 10, 1990·19 cites·20 claims
- 2248US4868648AMethod and apparatus for inspecting a pipeline in order to determine eccentricity thereofISEKI KAIHATSU KOKI·Filed 1988·Granted Sep 19, 1989·18 cites·10 claims
- 2347US4830539APipe propelling apparatusISEKI KAIHATSU KOKI·Filed 1988·Granted May 16, 1989·13 cites·5 claims
- 2447US4630869AShield tunneling machineISEKI KAIHATSU KOKI·Filed 1985·Granted Dec 23, 1986·18 cites·6 claims
- 2546US5193938AMethod and apparatus for laying pipeISEKI KAIHATSU KOKI·Filed 1991·Granted Mar 16, 1993·15 cites·10 claims
- 2645US5297582AMethod for water leakage prevention in pipelineISEKI KAIHATSU KOKI·Filed 1993·Granted Mar 29, 1994·18 cites·4 claims
- 2744US5123708AShield tunnelling machineISEKI KAIHATSU KOKI·Filed 1990·Granted Jun 23, 1992·18 cites·9 claims
- 2842US4898498AThrust transmitting deviceISEKI KAIHATSU KOKI·Filed 1988·Granted Feb 6, 1990·10 cites·5 claims
- 2941US5054976AInside processing apparatusISEKI KAIHATSU KOKI·Filed 1990·Granted Oct 8, 1991·12 cites·10 claims
- 3041US4874268AMethod and apparatus for building pipeline and shield tunnelling machineISEKI KAIHATSU KOKI·Filed 1988·Granted Oct 17, 1989·12 cites·4 claims
- 3140US5156490AShield tunnelling apparatusISEKI KAIHATSU KOKI·Filed 1991·Granted Oct 20, 1992·16 cites·2 claims
- 3238US5797202AVertical hole excavating machineISEKI KAIHATSU KOKI·Filed 1995·Granted Aug 25, 1998·10 cites·15 claims
- 3338US4886394AShield tunneling machineISEKI KAIHATSU KOKI·Filed 1988·Granted Dec 12, 1989·10 cites·10 claims
- 3437US5013189AIntermediate pipe-jacking apparatusISEKI KAIHATSU KOKI·Filed 1990·Granted May 7, 1991·9 cites·9 claims
- 3536US5339241AMethod and system for controlling a travelling body so as to move forward along the predetermined route of the movement of travelling bodyISEKI KAIHATSU KOKI·Filed 1991·Granted Aug 16, 1994·15 cites·6 claims
- 3636US5034137AMethod for treating muddy waterISEKI KAIHATSU KOKI·Filed 1990·Granted Jul 23, 1991·12 cites·5 claims
- 3736US4815695APipe propelling deviceISEKI KAIHATSU KOKI·Filed 1986·Granted Mar 28, 1989·3 cites·6 claims
- 3834US5904238ADuel belt conveyor systemISEKI KAIHATSU KOKI·Filed 1997·Granted May 18, 1999·4 cites·5 claims
- 3930US5538362AShield excavatorISEKI KAIHATSU KOKI·Filed 1995·Granted Jul 23, 1996·7 cites·16 claims
- 4030US5370479AShielding apparatusISEKI KAIHATSU KOKI·Filed 1993·Granted Dec 6, 1994·1 cites·9 claims
- 4128US5115886AMovable platform for construction sitesISEKI KAIHATSU KOKI·Filed 1991·Granted May 26, 1992·3 cites·3 claims
- 4227US5157982ARotary actuatorISEKI KAIHATSU KOKI·Filed 1991·Granted Oct 27, 1992·1 cites·3 claims
- 4325US5190407ARectangular shield excavating machineISEKI KAIHATSU KOKI·Filed 1992·Granted Mar 2, 1993·1 cites·13 claims
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