Assignee
ALBERTA OIL SANDS TECH
US·49 granted patents·2,794 citations·filing 1977–1999
Top patents by PatentIndex Score
49 records- 0196US4574038AMicrowave induced catalytic conversion of methane to ethylene and hydrogenALBERTA OIL SANDS TECH·Filed 1985·Granted Mar 4, 1986·78 cites·5 claims
- 0295US4454023AProcess for upgrading a heavy viscous hydrocarbonALBERTA OIL SANDS TECH·Filed 1983·Granted Jun 12, 1984·123 cites·21 claims
- 0394US4285773AApparatus and process for recovery of hydrocarbon from inorganic host materialsALBERTA OIL SANDS TECH·Filed 1979·Granted Aug 25, 1981·100 cites·1 claims
- 0493US5578197AHydrocracking process involving colloidal catalyst formed in situALBERTA OIL SANDS TECH·Filed 1994·Granted Nov 26, 1996·113 cites·43 claims
- 0593US5456315AHorizontal well gravity drainage combustion process for oil recoveryALBERTA OIL SANDS TECH·Filed 1994·Granted Oct 10, 1995·304 cites·6 claims
- 0691US4306961AProcess for recovery of hydrocarbons from inorganic host materialsALBERTA OIL SANDS TECH·Filed 1980·Granted Dec 22, 1981·53 cites·4 claims
- 0791US4280879AApparatus and process for recovery of hydrocarbons from inorganic host materialsALBERTA OIL SANDS TECH·Filed 1979·Granted Jul 28, 1981·55 cites·9 claims
- 0890US6257334B1Steam-assisted gravity drainage heavy oil recovery processALBERTA OIL SANDS TECH·Filed 1999·Granted Jul 10, 2001·277 cites·6 claims
- 0990US6026914AWellbore profiling systemALBERTA OIL SANDS TECH·Filed 1998·Granted Feb 22, 2000·226 cites·8 claims
- 1089US4271905AGaseous and solvent additives for steam injection for thermal recovery of bitumen from tar sandsALBERTA OIL SANDS TECH·Filed 1979·Granted Jun 9, 1981·83 cites·14 claims
- 1189US4180455AProcess for thermal cracking a heavy hydrocarbonALBERTA OIL SANDS TECH·Filed 1977·Granted Dec 25, 1979·36 cites·1 claims
- 1288US5899274ASolvent-assisted method for mobilizing viscous heavy oilALBERTA OIL SANDS TECH·Filed 1996·Granted May 4, 1999·191 cites·8 claims
- 1388US4574643ATwo phase flowmeterALBERTA OIL SANDS TECH·Filed 1984·Granted Mar 11, 1986·42 cites·8 claims
- 1486US4312234ATwo-phase flowmeterALBERTA OIL SANDS TECH·Filed 1980·Granted Jan 26, 1982·68 cites·12 claims
- 1584US6230814B1Process for enhancing hydrocarbon mobility using a steam additiveALBERTA OIL SANDS TECH·Filed 1999·Granted May 15, 2001·117 cites·26 claims
- 1682US4800959AMicrobial process for selectively plugging a subterranean formationALBERTA OIL SANDS TECH·Filed 1987·Granted Jan 31, 1989·35 cites·4 claims
- 1781US5074358ASurfactant-stabilized foams for enhanced oil recoveryALBERTA OIL SANDS TECH·Filed 1990·Granted Dec 24, 1991·53 cites·8 claims
- 1881US4438218ACatalyst for sulphur removal from hydrocarbonsALBERTA OIL SANDS TECH·Filed 1981·Granted Mar 20, 1984·58 cites·8 claims
- 1979US5836391AWellbore sand control methodALBERTA OIL SANDS TECH·Filed 1996·Granted Nov 17, 1998·66 cites·2 claims
- 2074US5916432AProcess for dispersing transition metal catalytic particles in heavy oilALBERTA OIL SANDS TECH·Filed 1997·Granted Jun 29, 1999·51 cites·6 claims
- 2171US5413175AStabilization and control of hot two phase flow in a wellALBERTA OIL SANDS TECH·Filed 1994·Granted May 9, 1995·55 cites·3 claims
- 2270US5350014AControl of flow and production of water and oil or bitumen from porous underground formationsALBERTA OIL SANDS TECH·Filed 1992·Granted Sep 27, 1994·55 cites·14 claims
- 2369US6203765B1Thermal apparatus and process for removing contaminants from oilALBERTA OIL SANDS TECH·Filed 1997·Granted Mar 20, 2001·38 cites·4 claims
- 2469US5056596ARecovery of bitumen or heavy oil in situ by injection of hot water of low quality steam plus caustic and carbon dioxideALBERTA OIL SANDS TECH·Filed 1990·Granted Oct 15, 1991·52 cites·8 claims
- 2569US4458759AUse of surfactants to improve oil recovery during steamfloodingALBERTA OIL SANDS TECH·Filed 1982·Granted Jul 10, 1984·39 cites·1 claims
- 2668US5145002ARecovery of heavy crude oil or tar sand oil or bitumen from underground formationsALBERTA OIL SANDS TECH·Filed 1991·Granted Sep 8, 1992·31 cites·5 claims
- 2766US5217578ADry thermal processorALBERTA OIL SANDS TECH·Filed 1990·Granted Jun 8, 1993·29 cites·28 claims
- 2865US4487264AUse of hydrogen-free carbon monoxide with steam in recovery of heavy oil at low temperaturesALBERTA OIL SANDS TECH·Filed 1982·Granted Dec 11, 1984·35 cites·1 claims
- 2963US5174378AMicrobial manipulations of surfactant-containing foams to reduce subterranean formation permeabilityALBERTA OIL SANDS TECH·Filed 1991·Granted Dec 29, 1992·23 cites·15 claims
- 3063US5060727AMethod for improving enhanced recovery of oil using surfactant-stabilized foamsALBERTA OIL SANDS TECH·Filed 1990·Granted Oct 29, 1991·18 cites·2 claims
- 3163US4718489APressure-up/blowdown combustion - a channelled reservoir recovery processALBERTA OIL SANDS TECH·Filed 1986·Granted Jan 12, 1988·48 cites·11 claims
- 3260US6186232B1Enhanced oil recovery by altering wettabilityALBERTA OIL SANDS TECH·Filed 1998·Granted Feb 13, 2001·52 cites·9 claims
- 3360US4890482AMethod and apparatus for measuring fluid viscosityALBERTA OIL SANDS TECH·Filed 1988·Granted Jan 2, 1990·26 cites·6 claims
- 3457US5607577APrevention of sulfur gas emissions from a rotary processor using lime additionALBERTA OIL SANDS TECH·Filed 1994·Granted Mar 4, 1997·22 cites·11 claims
- 3557US4506733AAdditive for inclusion in a heavy oil reservoir undergoing steam injectionALBERTA OIL SANDS TECH·Filed 1983·Granted Mar 26, 1985·15 cites·2 claims
- 3648US5366596ADry thermal processorALBERTA OIL SANDS TECH·Filed 1993·Granted Nov 22, 1994·8 cites·5 claims
- 3748US5215634AMicrowave induced catalytic conversion of methane and a hydrating agent to C3 oxygenatesALBERTA OIL SANDS TECH·Filed 1990·Granted Jun 1, 1993·6 cites·7 claims
- 3847US6143699AProcess for reducing permeability in a subterranean formationALBERTA OIL SANDS TECH·Filed 1996·Granted Nov 7, 2000·9 cites·22 claims
- 3946US5284497ADesulfurization of solid carbonaceous fuels by coagglomeration with sulfur sorbentsALBERTA OIL SANDS TECH·Filed 1992·Granted Feb 8, 1994·11 cites·14 claims
- 4043US5062482APiezometer actuator device and method for its installation in a boreholeALBERTA OIL SANDS TECH·Filed 1989·Granted Nov 5, 1991·14 cites·2 claims
- 4143US4501648AElectrophoretic process for separating aqueous mineral suspensionsALBERTA OIL SANDS TECH·Filed 1983·Granted Feb 26, 1985·9 cites·7 claims
- 4238US4623203ACommutatorALBERTA OIL SANDS TECH·Filed 1985·Granted Nov 18, 1986·6 cites·1 claims
- 4337US5060730AWater-wetting treatment for reducing water coning in an oil reservoirALBERTA OIL SANDS TECH·Filed 1990·Granted Oct 29, 1991·15 cites·5 claims
- 4436US4623442AApparatus for continuously separating particulate solids from liquid suspensionsALBERTA OIL SANDS TECH·Filed 1985·Granted Nov 18, 1986·5 cites·9 claims
- 4533US5957205ASand exclusion liner and method of using the sameALBERTA OIL SANDS TECH·Filed 1997·Granted Sep 28, 1999·21 cites·5 claims
- 4632US5301539AMethod for improving enhanced recovery of oil using surfactant-stabilized foamsALBERTA OIL SANDS TECH·Filed 1991·Granted Apr 12, 1994·3 cites·7 claims
- 4732US5062483ATreatment for reducing water coning in an oil reservoirALBERTA OIL SANDS TECH·Filed 1990·Granted Nov 5, 1991·11 cites·2 claims
- 4827US5290428ASuperacid catalyzed hydrocracking of heavy oils and bitumensALBERTA OIL SANDS TECH·Filed 1992·Granted Mar 1, 1994·2 cites·20 claims
- 4926US5719327ASand pack holderALBERTA OIL SANDS TECH·Filed 1994·Granted Feb 17, 1998·7 cites·4 claims
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