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Class Information
Number: 585/867
Name: Chemistry of hydrocarbon compounds > Purification, separation, or recovery > By addition of extraneous agent, e.g., solvent, etc. > Organic agent > Hydrocarbon
Description: Subject matter wherein an agent contains only carbon and hydrogen in its molecule.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7582312 |
Methods to produce lung surfactant formulations via lyophilization and formulations and uses thereof |
Sep. 1, 2009 |
| 7553406 |
Process for removing polar impurities from hydrocarbons and mixtures of hydrocarbons |
Jun. 30, 2009 |
| 7550065 |
Method for recovering solvents |
Jun. 23, 2009 |
| 7547814 |
Separation of olefin vapor from liquid fraction to reduce fouling |
Jun. 16, 2009 |
| 7465846 |
Extraction of oxygenates from a hydrocarbon stream |
Dec. 16, 2008 |
| 7442847 |
Removing diamondoid components from natural gas at reduced temperatures |
Oct. 28, 2008 |
| 7402720 |
Distillation process for removal of methyl acetylene and/or propadiene from an olefin stream |
Jul. 22, 2008 |
| 6914167 |
Vent recovery system |
Jul. 5, 2005 |
| 6734332 |
Process for enriching cis or trans-isomers in an olefin stream |
May. 11, 2004 |
| 6727399 |
Process for separating linear alpha olefins from saturated hydrocarbons |
Apr. 27, 2004 |
| 6676830 |
Process for the desulfurization of a light FCC naphtha |
Jan. 13, 2004 |
| 6576806 |
Process for separating C2-C3 olefins from industrial gases |
Jun. 10, 2003 |
| 6559349 |
Process for separating internal and alpha olefins from saturated compounds |
May. 6, 2003 |
| 6545192 |
Process for separating olefins from saturated hydrocarbons |
Apr. 8, 2003 |
| 6531103 |
Process for removing sulfur compounds from gas and liquid hydrocarbon streams |
Mar. 11, 2003 |
| 6447578 |
Process for the removal of nitrogen contained in natural gas |
Sep. 10, 2002 |
| 6407304 |
Process for the isolation of high boilers from the cyclooligomerization of 1,3-butadiene |
Jun. 18, 2002 |
| 6358372 |
Method of reducing formation of precipitates in solvent recovery system |
Mar. 19, 2002 |
| 6340414 |
Process for the recovery of perfluorinated sulphonic acids from spent acid |
Jan. 22, 2002 |
| 6278029 |
Process for eliminating polar compounds on an etherification unit |
Aug. 21, 2001 |
| 6271434 |
Process for separating linear alpha olefins from a crude stream containing saturated hydrocarbons, internal olefins, branched olefins, and linear alpha olefins |
Aug. 7, 2001 |
| 6211423 |
Process for separating saturated compounds from olefins |
Apr. 3, 2001 |
| RE37046 |
Process for recycling and purifying condensate from a hydrocarbon or alcohol synthesis process |
Feb. 6, 2001 |
| 6184431 |
Process for separating internal and alpha olefins from saturated compounds |
Feb. 6, 2001 |
| 6175050 |
Process for separating functionalized alpha olefins from functionalized internal olefins |
Jan. 16, 2001 |
| 6121505 |
Process for synthesizing and purifying olefins comprising dehydrogenating a paraffin |
Sep. 19, 2000 |
| 6066238 |
Hydrocarbon separation |
May. 23, 2000 |
| 6018089 |
Process for separating linear internal olefins from branched internal olefins |
Jan. 25, 2000 |
| 6005157 |
Cycloparaffin purification from petroleum streams |
Dec. 21, 1999 |
| 5977423 |
Mixed phase ethylation process for producing ethylbenzene |
Nov. 2, 1999 |
| 5968346 |
Two stage hydroprocessing with vapor-liquid interstage contacting for vapor heteroatom removal |
Oct. 19, 1999 |
| 5942656 |
Process for separating linear alpha olefins from 2-branched and/or 3-branched alpha olefins |
Aug. 24, 1999 |
| 5942655 |
Process for the removal of heavy hydrocarbonaceous co-products from a vapor effluent from a normally gaseous hydrocarbon dehydrogenation reaction zone |
Aug. 24, 1999 |
| 5939596 |
Butadiene removal system for ethylene plants with front end hydrogenation systems |
Aug. 17, 1999 |
| 5936136 |
Process for separating linear alpha olefins from 2 branched and/or3-branched alpha olefins |
Aug. 10, 1999 |
| 5849979 |
Process for cooling a hot vapor effluent of a hydrocarbon dehydrogenation zone and removing trace quantities of polynuclear aromatic compounds |
Dec. 15, 1998 |
| 5849983 |
Prevention of shearing of hydrocarbon droplets to aerosol sizes |
Dec. 15, 1998 |
| 5840160 |
Separation of 3-carene from limonene by extractive distillation |
Nov. 24, 1998 |
| 5811607 |
Composite shingle particle salvage system |
Sep. 22, 1998 |
| 5789647 |
Process for the extraction of natural carotenoid dyes |
Aug. 4, 1998 |
| 5720857 |
Separation of 1,2,4-trimethylbenzene from 1,2,3-trimethylbenzene by azeotropic distillation |
Feb. 24, 1998 |
| 5710357 |
Process for recovering olefins from cat-cracked gas without accumulating undesirable oxides of nitrogen |
Jan. 20, 1998 |
| 5675055 |
Acidification/extraction treatment of waste caustic stream |
Oct. 7, 1997 |
| 5605606 |
Removal foulants from distillation train using non-solvent precipitation |
Feb. 25, 1997 |
| 5510568 |
Process for the removal of mercaptans and hydrogen sulfide from hydrocarbon streams |
Apr. 23, 1996 |
| 5502971 |
Low pressure recovery of olefins from refinery offgases |
Apr. 2, 1996 |
| 5481060 |
Process for the removal of heavy hydrocarbonaceous co-products from a vapor effluent from a normally gaseous hydrocarbon dehydrogenation reaction zone |
Jan. 2, 1996 |
| 5476986 |
Method for cleaning a mixture of air and vapor from volatile crude oil with recovery of the hydrocarbons, and a system for use in the method |
Dec. 19, 1995 |
| 5444176 |
Process for recovering olefins from cat-cracked gas without accumulating undesirable oxides of nitrogen |
Aug. 22, 1995 |
| 5399244 |
Process to recover benzene from mixed hydrocarbons by extractive distillation |
Mar. 21, 1995 |
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