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Class Information
Number: 208/177
Name: Mineral oils: processes and products > Refining
Description: Processes for treating a mineral oil to (1) remove impurities or undesirable nonmineral oil components therefrom or (2) to inactivate these contaminants or impurities by converting them to some less noxious form, whether or not they are subsequently removed.

Sub-classes under this class:

Class Number Class Name Patents
208/255 Gum or gum former removal 76
208/262.1 Halogen contaminant removal 155
208/251R Metal contaminant removal 433
208/254R Nitrogen contaminant removal 216
208/263 Organic acid or phenol contaminant removal 131
208/179 Purifying used oil 157
208/208R Sulfur removal (free or combined sulfur) 434
208/189 Sweetening 92
208/187 Water removal (dehydration) 149
208/265 With acids 31
208/283 With alkali or alkali earth metal compound (except clays) 32
208/292 With boron, phosphorus, arsenic, antimony or bismuth containing treating agent 9
208/294 With free metal 8
208/296 With group ib or iib metal compound 25
208/297 With group iii metal compound (except clays) 21
208/295 With group iv, v, vi, vii or viii metal compound 81
208/264 With hydrogen 131
208/298 With liquid treating agent (includes slurries of solids) 19
208/289 With nitrogen containing compound 58
208/290 With organic compound 38
208/178 With reagent feed control 8
208/299 With solid catalyst or absorbent 197
208/293 With sulfur containing treating agent 25

Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8691082 Two-stage hydroprocessing with common fractionation Apr. 8, 2014
8608947 Two-stage hydrotreating process Dec. 17, 2013
8597501 Process for removing one or more sulfur compounds from a stream Dec. 3, 2013
8574429 Sulfone removal from an oxidized hydrocarbon fuel Nov. 5, 2013
8535518 Petroleum upgrading and desulfurizing process Sep. 17, 2013
8524074 Removal of mercury and mercuric compounds from crude oil streams Sep. 3, 2013
8486258 Gasoline hydrodesulfurization and membrane unit to reduce mercaptan type sulfur Jul. 16, 2013
8475652 Method for purification of uncatalyzed natural fuels from metal ions by means of at least one hemeprotein and use of the at least on hemeprotein Jul. 2, 2013
8216449 Bubble separation to remove haze and improve filterability of lube base stocks Jul. 10, 2012
8168557 Method of restoring catalytic activity to a spent hydrotreating catalyst, the resulting restored catalyst, and a method of hydroprocessing May. 1, 2012
8137536 Method for producing a crude product Mar. 20, 2012
8080155 Heavy oil upgrade process including recovery of spent catalyst Dec. 20, 2011
8080154 Heavy oil upgrade process including recovery of spent catalyst Dec. 20, 2011
8057664 Process for reducing bromine index of hydrocarbon feedstocks Nov. 15, 2011
8048294 Process for reducing bromine index of hydrocarbon feedstocks Nov. 1, 2011
8048295 Process for decreasing bromine-reactive contaminants in hydrocarbon feeds Nov. 1, 2011
8007663 Mesostructured zeolitic materials and methods of making and using the same Aug. 30, 2011
7947169 Method of recovering volatile organic compound and volatile organic compound recovery system May. 24, 2011
7927480 Process for desulfurization of cracked naphtha Apr. 19, 2011
7923595 Process for the treatment of a product stream Apr. 12, 2011
7922895 Supercritical water processing of extra heavy crude in a slurry-phase up-flow reactor system Apr. 12, 2011
7917307 Oil sample analysis calculator and method of using the same Mar. 29, 2011
7820034 Diluent from heavy oil upgrading Oct. 26, 2010
7811444 Oxidation of asphaltenes Oct. 12, 2010
7799213 Additives to enhance phosphorus compound removal in refinery desalting processes Sep. 21, 2010
7731839 Process for reducing bromine index of hydrocarbon feedstocks Jun. 8, 2010
7651604 Process for the catalytic hydrotreatment of heavy hydrocarbons of petroleum Jan. 26, 2010
7638040 Process for upgrading contaminated hydrocarbons Dec. 29, 2009
7544337 Impurity disposal system and method Jun. 9, 2009
7497191 System and method for producing, dispensing, using and monitoring a hydrogen enriched fuel Mar. 3, 2009
7435333 Upgrading asphaltene containing oils Oct. 14, 2008
7261810 Method and system for transporting flows of fluid hydrocarbons containing wax, asphaltenes, and/or other precipitating solids Aug. 28, 2007
7247234 Method for combined processing of diesel fuel Jul. 24, 2007
7241377 Salt bath refining Jul. 10, 2007
7029570 Disaggregation of asphaltenes in incompatible petroleum oil mixtures Apr. 18, 2006
6811683 Production of diesel fuel from bitumen Nov. 2, 2004
6759438 Use of oxygen analysis by GC-AED for control of fischer-tropsch process and product blending Jul. 6, 2004
6423211 Method for reducing organic fluoride levels in hydrocarbons Jul. 23, 2002
6368496 Decreasing bi-reactive contaminants Apr. 9, 2002
6344490 Removable filter for slurry hydrocarbon synthesis process Feb. 5, 2002
RE36922 Process of used lubricant oil recycling Oct. 24, 2000
6036849 Process for the removal of hydrocarbons from soils Mar. 14, 2000
6004455 Solvent-free method and apparatus for removing bituminous oil from oil sands Dec. 21, 1999
5998530 Flowability of mineral oils and mineral oil distillates using alkylphenol-aldehyde resins Dec. 7, 1999
5976360 Viscosity reduction by heat soak-induced naphthenic acid decomposition in hydrocarbon oils Nov. 2, 1999
5681451 Settling aids for solids in hydrocarbons Oct. 28, 1997
5656152 Water washing to remove salts Aug. 12, 1997
5656151 Intermittent water washing to remove salts Aug. 12, 1997
5641394 Stabilization of hydrocarbon fluids using metal deactivators Jun. 24, 1997
5607574 Method of breaking reverse emulsions in a crude oil desalting system Mar. 4, 1997

1 2 3 4

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