Assignee
HYDROCARBON RESEARCH INC
US·109 granted patents·3,604 citations·filing 1972–1994
Top patents by PatentIndex Score
109 records- 0195US4322569ACatalytic hydrogenation of glucose to produce sorbitolHYDROCARBON RESEARCH INC·Filed 1980·Granted Mar 30, 1982·54 cites·10 claims
- 0295US3985517ACoal passivation processHYDROCARBON RESEARCH INC·Filed 1975·Granted Oct 12, 1976·66 cites·11 claims
- 0394US4521295ASustained high hydroconversion of petroleum residua feedstocksHYDROCARBON RESEARCH INC·Filed 1982·Granted Jun 4, 1985·78 cites·17 claims
- 0494US4427535ASelective operating conditions for high conversion of special petroleum feedstocksHYDROCARBON RESEARCH INC·Filed 1981·Granted Jan 24, 1984·119 cites·13 claims
- 0594US4400468AProcess for producing adipic acid from biomassHYDROCARBON RESEARCH INC·Filed 1981·Granted Aug 23, 1983·155 cites·12 claims
- 0694US4354852APhase separation of hydrocarbon liquids using liquid vortexHYDROCARBON RESEARCH INC·Filed 1981·Granted Oct 19, 1982·65 cites·8 claims
- 0793US4495060AQuenching hydrocarbon effluent from catalytic reactor to avoid precipitation of asphaltene compoundsHYDROCARBON RESEARCH INC·Filed 1982·Granted Jan 22, 1985·68 cites·12 claims
- 0893US4452911AFrangible catalyst pretreatment method for use in hydrocarbon hydrodemetallization processHYDROCARBON RESEARCH INC·Filed 1983·Granted Jun 5, 1984·112 cites·7 claims
- 0993US4249909ADrying and passivating wet coals and ligniteHYDROCARBON RESEARCH INC·Filed 1979·Granted Feb 10, 1981·46 cites·10 claims
- 1091US4853111ATwo-stage co-processing of coal/oil feedstocksHYDROCARBON RESEARCH INC·Filed 1986·Granted Aug 1, 1989·79 cites·14 claims
- 1191US4420644ALignin hydrocracking process to produce phenol and benzeneHYDROCARBON RESEARCH INC·Filed 1981·Granted Dec 13, 1983·97 cites·9 claims
- 1291US4400181AMethod for using fast fluidized bed dry bottom coal gasificationHYDROCARBON RESEARCH INC·Filed 1982·Granted Aug 23, 1983·73 cites·11 claims
- 1391US3964995AHydrodesulfurization processHYDROCARBON RESEARCH INC·Filed 1974·Granted Jun 22, 1976·40 cites·4 claims
- 1490US5503721AMethod for photoactivationHYDROCARBON RESEARCH INC·Filed 1994·Granted Apr 2, 1996·55 cites·3 claims
- 1590US5037791APorous metal oxide supported carbon-coated catalysts and method for producing sameHYDROCARBON RESEARCH INC·Filed 1990·Granted Aug 6, 1991·83 cites·19 claims
- 1690US4323446AMulti-zone coal conversion process using particulate carrier materialHYDROCARBON RESEARCH INC·Filed 1979·Granted Apr 6, 1982·44 cites·14 claims
- 1790US3985516ACoal drying and passivation processHYDROCARBON RESEARCH INC·Filed 1975·Granted Oct 12, 1976·46 cites·14 claims
- 1889US4457831ATwo-stage catalytic hydroconversion of hydrocarbon feedstocks using resid recycleHYDROCARBON RESEARCH INC·Filed 1982·Granted Jul 3, 1984·82 cites·11 claims
- 1989US4221653ACatalytic hydrogenation process and apparatus with improved vapor liquid separationHYDROCARBON RESEARCH INC·Filed 1978·Granted Sep 9, 1980·45 cites·15 claims
- 2088US4344840AHydrocracking and hydrotreating shale oil in multiple catalytic reactorsHYDROCARBON RESEARCH INC·Filed 1981·Granted Aug 17, 1982·61 cites·8 claims
- 2188US4217112AProduction of fuel gas by liquid phase hydrogenation of coalHYDROCARBON RESEARCH INC·Filed 1978·Granted Aug 12, 1980·24 cites·22 claims
- 2287US4454240ACatalyst regeneration process including metal contaminants removalHYDROCARBON RESEARCH INC·Filed 1981·Granted Jun 12, 1984·47 cites·6 claims
- 2387US4407367AMethod for in situ recovery of heavy crude oils and tars by hydrocarbon vapor injectionHYDROCARBON RESEARCH INC·Filed 1980·Granted Oct 4, 1983·70 cites·1 claims
- 2487US3978199ARecovering carbon black from waste rubberHYDROCARBON RESEARCH INC·Filed 1975·Granted Aug 31, 1976·52 cites·6 claims
- 2586US4362213AMethod of in situ oil extraction using hot solvent vapor injectionHYDROCARBON RESEARCH INC·Filed 1980·Granted Dec 7, 1982·96 cites·5 claims
- 2685US5284940APreparation for nucleic acid samplesHYDROCARBON RESEARCH INC·Filed 1990·Granted Feb 8, 1994·64 cites·7 claims
- 2785US4702891AFluid flow distribution system for fluidized bed reactorHYDROCARBON RESEARCH INC·Filed 1985·Granted Oct 27, 1987·52 cites·13 claims
- 2885US4054504ACatalytic hydrogenation of blended coal and residual oil feedsHYDROCARBON RESEARCH INC·Filed 1975·Granted Oct 18, 1977·35 cites·8 claims
- 2984US5033413AFluidized bed combustion system and method utilizing capped dual-sided contact unitsHYDROCARBON RESEARCH INC·Filed 1990·Granted Jul 23, 1991·53 cites·22 claims
- 3084US4338472ACatalytic hydrogenolysis of alditols to produce polyolsHYDROCARBON RESEARCH INC·Filed 1981·Granted Jul 6, 1982·27 cites·11 claims
- 3183US4592826AUse of ethers in thermal crackingHYDROCARBON RESEARCH INC·Filed 1984·Granted Jun 3, 1986·32 cites·12 claims
- 3283US3962070AH-coal process: slurry oil recycle systemHYDROCARBON RESEARCH INC·Filed 1974·Granted Jun 8, 1976·35 cites·2 claims
- 3382US4576710ACatalyst desulfurization of petroleum residua feedstocksHYDROCARBON RESEARCH INC·Filed 1984·Granted Mar 18, 1986·31 cites·12 claims
- 3482US4483631AMultiple thermocouple system for high temperature reactorsHYDROCARBON RESEARCH INC·Filed 1982·Granted Nov 20, 1984·41 cites·12 claims
- 3582US4366332ACatalytic hydrogenolysis of alditols to product glycerol and polyolsHYDROCARBON RESEARCH INC·Filed 1981·Granted Dec 28, 1982·31 cites·12 claims
- 3682US4151073AProcess for phase separationHYDROCARBON RESEARCH INC·Filed 1978·Granted Apr 24, 1979·27 cites·7 claims
- 3781US4567145AContinuous production of ethanol by use of respiration deficient mutant yeastHYDROCARBON RESEARCH INC·Filed 1982·Granted Jan 28, 1986·23 cites·18 claims
- 3881US4287088AMulti-stage fluidization and segregation of used catalyst fractionsHYDROCARBON RESEARCH INC·Filed 1979·Granted Sep 1, 1981·37 cites·6 claims
- 3981US4099933AProcess for the multiple zone gasification of coalHYDROCARBON RESEARCH INC·Filed 1975·Granted Jul 11, 1978·22 cites·10 claims
- 4080US5654179ANucleic acid preparation methodsHYDROCARBON RESEARCH INC·Filed 1994·Granted Aug 5, 1997·82 cites·16 claims
- 4180US4839030ACoal liquefaction process utilizing coal/CO2 slurry feedstreamHYDROCARBON RESEARCH INC·Filed 1988·Granted Jun 13, 1989·47 cites·15 claims
- 4280US4380678AMulti-stage aldoses to polyols processHYDROCARBON RESEARCH INC·Filed 1981·Granted Apr 19, 1983·21 cites·10 claims
- 4380US4359326AFluidized bed reactor apparatus and related gasification systemHYDROCARBON RESEARCH INC·Filed 1980·Granted Nov 16, 1982·42 cites·19 claims
- 4479US5620852ANucleic acid preparation methodsHYDROCARBON RESEARCH INC·Filed 1994·Granted Apr 15, 1997·71 cites·19 claims
- 4579US4478705AHydroconversion process for hydrocarbon liquids using supercritical vapor extraction of liquid fractionsHYDROCARBON RESEARCH INC·Filed 1983·Granted Oct 23, 1984·38 cites·7 claims
- 4679US4111788AStaged hydrogenation of low rank coalHYDROCARBON RESEARCH INC·Filed 1976·Granted Sep 5, 1978·25 cites·21 claims
- 4778US4842719ACatalytic two-stage coal hydrogenation and hydroconversion processHYDROCARBON RESEARCH INC·Filed 1986·Granted Jun 27, 1989·38 cites·11 claims
- 4878US4230896ACatalytic steam dealkylation of alkyl phenolsHYDROCARBON RESEARCH INC·Filed 1978·Granted Oct 28, 1980·11 cites·11 claims
- 4977US4947803AFludized bed reactor using capped dual-sided contact units and methods for useHYDROCARBON RESEARCH INC·Filed 1989·Granted Aug 14, 1990·33 cites·20 claims
- 5077US4816141ACatalytic two-stage liquefaction of coal utilizing cascading of used ebullated-bed catalystHYDROCARBON RESEARCH INC·Filed 1987·Granted Mar 28, 1989·35 cites·16 claims
Showing the top 50 of 109 patent records by PatentIndex Score.
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