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Class Information
Number: 208/31R
Name: Mineral oils: processes and products >
Description:










Sub-classes under this class:

Class Number Class Name Patents
208/1 Synthetic drying oils 2
208/12 Colorng treatments (includes fluorescence) 33
208/13 Treatment of refining sludge 124
208/14 Products and compositions 217
208/177 Refining 169
208/2 Phenolic or toxic oils 8
208/24 Paraffin wax; treatment or recovery 65
208/3 Oxidation of mineral oils 52
208/308 Fractionation 93
208/370 Miscellaneous 84
208/39 Asphalts, tars, pitches and resins; making, treating and recovery 297
208/390 Tar sand treatment with liquid 299
208/400 By treatment of solid mineral, e.g., coal liquefaction, etc. 138
208/46 Chemical conversion of hydrocarbons 325
208/950 Processing of "fischer-tropsch" crude 175
208/951 Solid feed treatment with a gas other than air, hydrogen or steam 93
208/952 Solid feed treatment under supercritical conditions 58
208/DIG.1 Automatic control 215
208/DIG.2 Molecular sieve 34


Patents under this class:

Patent Number Title Of Patent Date Issued











 
 
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