Assignee
US INTERIOR
484 patents
Top patents by PatentIndex Score
US4039440AAug 2, 1977
Reverse osmosis membrane
US INTERIOR142 citations97
US5078219AJan 7, 1992
Concave drag bit cutter device and method
US INTERIOR71 citations96
US4005012AJan 25, 1977
Semipermeable membranes and the method for the preparation thereof
US INTERIOR114 citations96
US5648201AJul 15, 1997
Efficient chemistry for selective modification and metallization of substrates
US INTERIOR61 citations95
US4377209AMar 22, 1983
Thermally activated metal hydride sensor/actuator
US INTERIOR56 citations95
US4315753AFeb 16, 1982
Electrochemical apparatus for simultaneously monitoring two gases
US INTERIOR127 citations95
US4282931AAug 11, 1981
Metal hydride actuation device
US INTERIOR56 citations95
US4222611ASep 16, 1980
In-situ leach mining method using branched single well for input and output
US INTERIOR86 citations95
US6863815B1Mar 8, 2005
Small-scale hydrogen-oxidizing-denitrifying bioreactor
US INTERIOR28 citations93
US5424195AJun 13, 1995
Method for in situ biological conversion of coal to methane
US INTERIOR91 citations93
US4437994AMar 20, 1984
Extraction of metal ions from aqueous solution
US INTERIOR49 citations93
US4256705AMar 17, 1981
Leaching agglomerated gold - silver ores
US INTERIOR55 citations93
US4256706AMar 17, 1981
Leaching agglomerated gold - silver ores
US INTERIOR86 citations93
US4203640AMay 20, 1980
Electrical cable coupler with rotatable protective covers
US INTERIOR67 citations93
US4144185AMar 13, 1979
Method and composition for removing calcium sulfate scale deposits from surfaces
US INTERIOR52 citations93
US6129843AOct 10, 2000
Device for the removal and concentration of neutral mercury species from and water
US INTERIOR61 citations92
US5003144AMar 26, 1991
Microwave assisted hard rock cutting
US INTERIOR97 citations92
US4806264AFeb 21, 1989
Method of selectively removing selenium ions from an aqueous solution
US INTERIOR48 citations92
US4389900AJun 28, 1983
Capacitance probe sensor device
US INTERIOR39 citations92
US4307135ADec 22, 1981
Process for preparing an asymmetric permselective membrane
US INTERIOR43 citations92
US4249777AFeb 10, 1981
Method of in situ mining
US INTERIOR49 citations92
US4172255AOct 23, 1979
HF coastal current mapping radar system
US INTERIOR50 citations92
US4141225AFeb 27, 1979
Articulated, flexible shaft assembly with axially lockable universal joint
US INTERIOR54 citations92
US4096944AJun 27, 1978
Cartridge for grouting an anchor element in a hole of a support structure
US INTERIOR47 citations92
US4032440AJun 28, 1977
Semipermeable membrane
US INTERIOR40 citations92
US3961524AJun 8, 1976
Method and apparatus for determining rock stress in situ
US INTERIOR65 citations92
US6236211B1May 22, 2001
Induced polarization method using towed cable carrying transmitters and receivers for identifying minerals on the ocean floor
US INTERIOR69 citations91
US6105430AAug 22, 2000
Inspection of concrete structures using sonic tomography
US INTERIOR35 citations91
US6021664AFeb 8, 2000
Automated groundwater monitoring system and method
US INTERIOR137 citations91
US4815791AMar 28, 1989
Bedded mineral extraction process
US INTERIOR93 citations91
US4772391ASep 20, 1988
Composite membrane for reverse osmosis
US INTERIOR47 citations91
US4445931AMay 1, 1984
Production of metal powder
US INTERIOR49 citations91
US4302053ANov 24, 1981
Mounting block to rotate coal cutter bits
US INTERIOR39 citations91
US4180177ADec 25, 1979
Pressure vent for explosion-proof electrical enclosures
US INTERIOR95 citations91
US4072015AFeb 7, 1978
Borehole aerostatic ground support system
US INTERIOR47 citations91
US4037157AJul 19, 1977
Electro-optical speed transducer
US INTERIOR33 citations91
US4024949AMay 24, 1977
Traverse bendable endless belt conveyor
US INTERIOR57 citations91
US3942329AMar 9, 1976
Flexible rock bolt
US INTERIOR39 citations91
US4567763AFeb 4, 1986
Passive encoder for range knobs
US INTERIOR29 citations90
US4442072AApr 10, 1984
Selective recovery of base metals and precious metals from ores
US INTERIOR36 citations90
US4438473AMar 20, 1984
Power supply for an intrinsically safe circuit
US INTERIOR74 citations90
US4331975AMay 25, 1982
Instrumentation for surveying underground cavities
US INTERIOR43 citations90
US4266829AMay 12, 1981
Combined rotating bed scrubber and water eliminator
US INTERIOR29 citations90
US4251109AFeb 17, 1981
Dust controlling method using a coal cutter bit
US INTERIOR48 citations90
US4157204AJun 5, 1979
Face ventilation system for coal mines
US INTERIOR34 citations90
US4066992AJan 3, 1978
Seismic mine monitoring system
US INTERIOR44 citations90
US6541106B1Apr 1, 2003
Hydrophilic polyurethane impregnated rubber for sealing water leaks
US INTERIOR30 citations89
US4708214ANov 24, 1987
Rotatable end deflector for abrasive water jet drill
US INTERIOR38 citations89
US4663893AMay 12, 1987
End deflector for abrasive water jet slot cutter
US INTERIOR37 citations89
US4328901AMay 11, 1982
Multilayer pressure vent for explosion proof enclosures
US INTERIOR53 citations89
Showing the top 50 of 484 patents by PatentIndex Score.