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Class Information
Number: 208/400
Name: Mineral oils: processes and products > By treatment of solid mineral, e.g., coal liquefaction, etc.
Description: Process wherein a liquid oily or tarlike hydrocarbonaceous mixture is recovered from a solid mineral material feed, such as coal, diatomite, oil shale, tar sand, etc.










Sub-classes under this class:

Class Number Class Name Patents
208/403 Chemical modification of solids before hydrogenation 70
208/401 Including a test or measurement 38
208/426 Including agglomeration, comminution or size-classification of solids 140
208/427 Including burning of feed or product 264
208/415 Including contact of feed with liquid produced in the process, i.e., recycle 139
208/428 Including contact with extraneous additive other than hydrogen, e.g., solvent, etc. 170
208/412 Plural hydrogenation steps 95
208/407 Specified agitation or circulation in gas contact zone 87
208/424 Specified procedure to improve separation of solids from liquid product 172
208/402 Using electrical, magnetic or wave energy 54
208/404 Using molten additive, e.g., heat carrier, etc. 28
208/419 Using specifically added catalyst during hydrogenation 139
208/414 With hydrogen production from water 108


Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8691084 Bitumen upgrading using supercritical fluids Apr. 8, 2014
8685234 Extraction of hydrocarbons from hydrocarbon-containing materials and/or processing of hydrocarbon-containing materials Apr. 1, 2014
8673135 Coal liquefaction complex with minimal carbon dioxide emissions Mar. 18, 2014
8665437 Method of controlling a transformation process of charge material to a product Mar. 4, 2014
8627886 Systems and methods for low emission hydrocarbon recovery Jan. 14, 2014
8597503 Coal liquefaction system Dec. 3, 2013
8591727 Pipeline crude oil in coal liquefaction Nov. 26, 2013
8512551 Forming cement as a by-product of coal liquefaction Aug. 20, 2013
8502100 Apparatus, system, and method for separating bitumen from crude oil sands Aug. 6, 2013
8490703 Corrugated heating conduit and method of using in thermal expansion and subsidence mitigation Jul. 23, 2013
8460541 Process for converting carbon-based energy carrier material Jun. 11, 2013
8449632 Sewage material in coal liquefaction May. 28, 2013
8435404 Method for the pyrolytic extraction of hydrocarbon from oil shale May. 7, 2013
8425766 Biomass pretreatment for fast pyrolysis to liquids Apr. 23, 2013
8404107 Extraction of hydrocarbons from hydrocarbon-containing materials Mar. 26, 2013
8404108 Extraction of hydrocarbons from hydrocarbon-containing materials and/or processing of hydrocarbon-containing materials Mar. 26, 2013
8398340 Method of extracting contents from the inside of a reactor kept at high temperature and high pressure, and synthesis reaction system of hydrocarbon compound Mar. 19, 2013
8356678 Oil recovery method and apparatus Jan. 22, 2013
8349171 Methods of recovering hydrocarbons from hydrocarbonaceous material using a constructed infrastructure and associated systems maintained under positive pressure Jan. 8, 2013
8336621 Energy efficient, low emissions shale oil recovery process Dec. 25, 2012
8323481 Carbon management and sequestration from encapsulated control infrastructures Dec. 4, 2012
8303916 Gaseous transfer in multiple metal bath reactors Nov. 6, 2012
8277643 Catalytic pyrolysis of solid biomass and related biofuels, aromatic, and olefin compounds Oct. 2, 2012
8273244 Separation and extraction of bitumen from tar sands Sep. 25, 2012
8267481 Convective heat systems for recovery of hydrocarbons from encapsulated permeability control infrastructures Sep. 18, 2012
8268126 Method, equipment and applications for fast complete dissolution and hydrolysis of lignocellulosic biomass Sep. 18, 2012
8236173 Biomass pretreatment for fast pyrolysis to liquids Aug. 7, 2012
8206577 System and method for pretreatment of solid carbonaceous material Jun. 26, 2012
8123934 System and method for pretreatment of solid carbonaceous material Feb. 28, 2012
8114274 Method for treating bitumen froth with high bitumen recovery and dual quality bitumen production Feb. 14, 2012
8076121 Integrated process for conversion of hydrocarbonaceous assets and photobiofuels production Dec. 13, 2011
8076122 Process for integrating conversion of hydrocarbonaceous assets and photobiofuels production using an absorption tower Dec. 13, 2011
8002972 Petroleum products from oil shale Aug. 23, 2011
7901568 Process for converting carbon-based energy carrier material Mar. 8, 2011
7807048 Thermal recovery of petroleum crude oil from tar sands and oil shale deposits Oct. 5, 2010
7807049 Method and apparatus for recovering oil from oil shale without environmental impacts Oct. 5, 2010
7763762 Method for unpressurized catalytic conversion of organic solids into oil Jul. 27, 2010
7753969 Method of converting animal waste into a multi-phase fuel Jul. 13, 2010
7718038 Retort heating method May. 18, 2010
7704381 Biomass thermal oiling Apr. 27, 2010
7626061 Method and apparatus for continuous decomposing waste polymeric materials Dec. 1, 2009
7575730 Method of introducing or reintroducing a gas into a slurry vessel Aug. 18, 2009
7419585 Process for upgrading residua Sep. 2, 2008
7285694 Thermobaric molecular fractionation Oct. 23, 2007
7112311 Cooling method of hydrotreating plant and cooling unit therefor Sep. 26, 2006
7070758 Process and apparatus for generating hydrogen from oil shale Jul. 4, 2006
7008528 Process and system for continuously extracting oil from solid or liquid oil bearing material Mar. 7, 2006
6607569 Method of estimating reaction product in coal liquefying reaction Aug. 19, 2003
6504068 Method for converting a plastic waste into oil in a stainless steel reactor Jan. 7, 2003
6464860 Process and apparatus for generating carbon monoxide and extracting oil from oil shale Oct. 15, 2002

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