Assignee
GEWERK EISENHUETTE WESTFALIA
DE·324 granted patents·4,055 citations·filing 1973–1991
Top patents by PatentIndex Score
324 records- 0198US4157751AScraper-chain conveyorsGEWERK EISENHUETTE WESTFALIA·Filed 1977·Granted Jun 12, 1979·366 cites·11 claims
- 0297US4571003AApparatus for controlling the position of a mineral mining machineGEWERK EISENHUETTE WESTFALIA·Filed 1984·Granted Feb 18, 1986·131 cites·9 claims
- 0393US4939949APlanetary overriding gearing and overriding driving for chain belts and the like, particularly for chain conveyors and chaindrawn mining machinesGEWERK EISENHUETTE WESTFALIA·Filed 1989·Granted Jul 10, 1990·80 cites·12 claims
- 0493US4217067AMine roof support assemblyGEWERK EISENHUETTE WESTFALIA·Filed 1979·Granted Aug 12, 1980·42 cites·18 claims
- 0592US4273383AMineral winning machinesGEWERK EISENHUETTE WESTFALIA·Filed 1979·Granted Jun 16, 1981·44 cites·10 claims
- 0690US4149753ACutter bit assembliesGEWERK EISENHUETTE WESTFALIA·Filed 1977·Granted Apr 17, 1979·61 cites·11 claims
- 0789US4457212AHydraulic ramGEWERK EISENHUETTE WESTFALIA·Filed 1982·Granted Jul 3, 1984·41 cites·18 claims
- 0887US4733771AConnection devices for interconnecting the pans of scraper-chain conveyorsGEWERK EISENHUETTE WESTFALIA·Filed 1987·Granted Mar 29, 1988·45 cites·18 claims
- 0987US4514873AEquipment for cleaning remnants of carbon blocksGEWERK EISENHUETTE WESTFALIA·Filed 1983·Granted May 7, 1985·29 cites·23 claims
- 1087US4344581ACrushing apparatusGEWERK EISENHUETTE WESTFALIA·Filed 1979·Granted Aug 17, 1982·44 cites·16 claims
- 1186US4523512ATelescopic support props for mineral miningGEWERK EISENHUETTE WESTFALIA·Filed 1982·Granted Jun 18, 1985·36 cites·6 claims
- 1286US4122683ATunnel drive shieldGEWERK EISENHUETTE WESTFALIA·Filed 1977·Granted Oct 31, 1978·30 cites·7 claims
- 1385US4099388ADrive shield for tunneling apparatus and a method for operating such a shieldGEWERK EISENHUETTE WESTFALIA·Filed 1976·Granted Jul 11, 1978·27 cites·8 claims
- 1484US4076318ACutter bit assemblies for coal ploughsGEWERK EISENHUETTE WESTFALIA·Filed 1976·Granted Feb 28, 1978·26 cites·10 claims
- 1584US4049529AApparatus with crust piercing and gas feeding means for use with electrolytic furnacesGEWERK EISENHUETTE WESTFALIA·Filed 1976·Granted Sep 20, 1977·26 cites·7 claims
- 1683US4280735ANon-rotary mining cutter with recessed nozzle insertGEWERK EISENHUETTE WESTFALIA·Filed 1978·Granted Jul 28, 1981·26 cites·14 claims
- 1782US4870364AMethod of, and apparatus for, monitoring the operation of electromagnetic hydraulic valvesGEWERK EISENHUETTE WESTFALIA·Filed 1988·Granted Sep 26, 1989·32 cites·9 claims
- 1882US4427321AMineral mining installationGEWERK EISENHUETTE WESTFALIA·Filed 1981·Granted Jan 24, 1984·20 cites·25 claims
- 1982US4037876ATightening arrangement for longwall mining machine cable and conveyorGEWERK EISENHUETTE WESTFALIA·Filed 1975·Granted Jul 26, 1977·30 cites·22 claims
- 2081US4248481ATunnel driving apparatus with cutter arms internal and external of support tubeGEWERK EISENHUETTE WESTFALIA·Filed 1979·Granted Feb 3, 1981·25 cites·17 claims
- 2181US4078452ADrive systems for mining apparatusGEWERK EISENHUETTE WESTFALIA·Filed 1975·Granted Mar 14, 1978·27 cites·16 claims
- 2280US4600340AMine roof support unitGEWERK EISENHUETTE WESTFALIA·Filed 1984·Granted Jul 15, 1986·21 cites·18 claims
- 2379US4391471AGuides for mineral mining machinesGEWERK EISENHUETTE WESTFALIA·Filed 1981·Granted Jul 5, 1983·40 cites·31 claims
- 2478US4282968AScraper-chain conveyor channel sectionGEWERK EISENHUETTE WESTFALIA·Filed 1979·Granted Aug 11, 1981·24 cites·18 claims
- 2578US4037713AScraper-chain conveyorsGEWERK EISENHUETTE WESTFALIA·Filed 1974·Granted Jul 26, 1977·42 cites·31 claims
- 2677US4544185AHydraulic coupling deviceGEWERK EISENHUETTE WESTFALIA·Filed 1983·Granted Oct 1, 1985·39 cites·14 claims
- 2777US4043137AApparatus for and a method of constructing a tunnelGEWERK EISENHUETTE WESTFALIA·Filed 1975·Granted Aug 23, 1977·19 cites·14 claims
- 2876US4378027AControl unit for an electro-hydraulic roof support control arrangementGEWERK EISENHUETTE WESTFALIA·Filed 1981·Granted Mar 29, 1983·28 cites·19 claims
- 2976US4147453AMethod of, and apparatus for, driving and lining tunnelsGEWERK EISENHUETTE WESTFALIA·Filed 1978·Granted Apr 3, 1979·17 cites·25 claims
- 3076US4091616ACatalytic devices for treating exhaust gases of internal combustion enginesGEWERK EISENHUETTE WESTFALIA·Filed 1976·Granted May 30, 1978·30 cites·4 claims
- 3175US4646905ARetaining elementGEWERK EISENHUETTE WESTFALIA·Filed 1981·Granted Mar 3, 1987·23 cites·23 claims
- 3275US4227833AMineral mining installationGEWERK EISENHUETTE WESTFALIA·Filed 1979·Granted Oct 14, 1980·18 cites·12 claims
- 3375US4149567AMulti-core hydraulic ductGEWERK EISENHUETTE WESTFALIA·Filed 1978·Granted Apr 17, 1979·31 cites·5 claims
- 3474US4473364ASprocket wheelGEWERK EISENHUETTE WESTFALIA·Filed 1982·Granted Sep 25, 1984·25 cites·5 claims
- 3574US4173421AShield apparatus for use in tunnelling or miningGEWERK EISENHUETTE WESTFALIA·Filed 1977·Granted Nov 6, 1979·20 cites·5 claims
- 3674US4055959AApparatus for use in mining or tunnelling installationsGEWERK EISENHUETTE WESTFALIA·Filed 1976·Granted Nov 1, 1977·26 cites·24 claims
- 3773US4614134AOverload protection system for planetary gear driveGEWERK EISENHUETTE WESTFALIA·Filed 1984·Granted Sep 30, 1986·25 cites·12 claims
- 3873US4195953AAdvance mechanism for a mine roof support assemblyGEWERK EISENHUETTE WESTFALIA·Filed 1978·Granted Apr 1, 1980·13 cites·17 claims
- 3972US4479575ARetaining deviceGEWERK EISENHUETTE WESTFALIA·Filed 1983·Granted Oct 30, 1984·23 cites·18 claims
- 4072US4253344ASprocket drum assemblyGEWERK EISENHUETTE WESTFALIA·Filed 1979·Granted Mar 3, 1981·22 cites·6 claims
- 4172US4056284AMachines for use in mining or tunnelling workGEWERK EISENHUETTE WESTFALIA·Filed 1975·Granted Nov 1, 1977·21 cites·8 claims
- 4270US4732472AMethods of, and systems for, determining the position of an objectGEWERK EISENHUETTE WESTFALIA·Filed 1985·Granted Mar 22, 1988·37 cites·26 claims
- 4370US4607890AGuides for mineral mining machinesGEWERK EISENHUETTE WESTFALIA·Filed 1984·Granted Aug 26, 1986·28 cites·19 claims
- 4470US4437564AConveyor drive frameGEWERK EISENHUETTE WESTFALIA·Filed 1982·Granted Mar 20, 1984·21 cites·9 claims
- 4570US4378124AHydraulic coupling deviceGEWERK EISENHUETTE WESTFALIA·Filed 1980·Granted Mar 29, 1983·31 cites·11 claims
- 4670US4063425ATunnel driving apparatusGEWERK EISENHUETTE WESTFALIA·Filed 1976·Granted Dec 20, 1977·13 cites·16 claims
- 4769US4556256ACutting appliances for use in tunnel driving operationsGEWERK EISENHUETTE WESTFALIA·Filed 1983·Granted Dec 3, 1985·20 cites·12 claims
- 4869US4319772AHydraulic coupling deviceGEWERK EISENHUETTE WESTFALIA·Filed 1980·Granted Mar 16, 1982·33 cites·9 claims
- 4969US4313463APressure-relief valve deviceGEWERK EISENHUETTE WESTFALIA·Filed 1980·Granted Feb 2, 1982·25 cites·11 claims
- 5069US4247135AHydraulic coupling deviceGEWERK EISENHUETTE WESTFALIA·Filed 1978·Granted Jan 27, 1981·25 cites·7 claims
Showing the top 50 of 324 patent records by PatentIndex Score.
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