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Classification Resources
 
Class   208MINERAL OILS: PROCESSES AND PRODUCTS
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 [List of Pre Grant Publications for class 208 subclass 1][List of Patents for class 208 subclass 1]1 SYNTHETIC DRYING OILS
 [List of Pre Grant Publications for class 208 subclass 2][List of Patents for class 208 subclass 2]2 PHENOLIC OR TOXIC OILS
[List of Pre Grant Publications for class 208 subclass 3][List of Patents for class 208 subclass 3]3 OXIDATION OF MINERAL OILS
[List of Pre Grant Publications for class 208 subclass 390][List of Patents for class 208 subclass 390]390 TAR SAND TREATMENT WITH LIQUID
[List of Pre Grant Publications for class 208 subclass 400][List of Patents for class 208 subclass 400]400 BY TREATMENT OF SOLID MINERAL, E.G., COAL LIQUEFACTION, ETC.
 [List of Pre Grant Publications for class 208 subclass 401][List of Patents for class 208 subclass 401]401 Subclass 401 indent level is 1 Including a test or measurement
 [List of Pre Grant Publications for class 208 subclass 402][List of Patents for class 208 subclass 402]402 Subclass 402 indent level is 1 Using electrical, magnetic or wave energy
 [List of Pre Grant Publications for class 208 subclass 403][List of Patents for class 208 subclass 403]403 Subclass 403 indent level is 1 Chemical modification of solids before hydrogenation
[List of Pre Grant Publications for class 208 subclass 404][List of Patents for class 208 subclass 404]404 Subclass 404 indent level is 1 Using molten additive, e.g., heat carrier, etc.
[List of Pre Grant Publications for class 208 subclass 407][List of Patents for class 208 subclass 407]407 Subclass 407 indent level is 1 Specified agitation or circulation in gas contact zone
[List of Pre Grant Publications for class 208 subclass 412][List of Patents for class 208 subclass 412]412 Subclass 412 indent level is 1 Plural hydrogenation steps
 [List of Pre Grant Publications for class 208 subclass 414][List of Patents for class 208 subclass 414]414 Subclass 414 indent level is 1 With hydrogen production from water
[List of Pre Grant Publications for class 208 subclass 415][List of Patents for class 208 subclass 415]415 Subclass 415 indent level is 1 Including contact of feed with liquid produced in the process, i.e., recycle
[List of Pre Grant Publications for class 208 subclass 419][List of Patents for class 208 subclass 419]419 Subclass 419 indent level is 1 Using specifically added catalyst during hydrogenation
[List of Pre Grant Publications for class 208 subclass 424][List of Patents for class 208 subclass 424]424 Subclass 424 indent level is 1 Specified procedure to improve separation of solids from liquid product
 [List of Pre Grant Publications for class 208 subclass 426][List of Patents for class 208 subclass 426]426 Subclass 426 indent level is 1 Including agglomeration, comminution or size-classification of solids
 [List of Pre Grant Publications for class 208 subclass 427][List of Patents for class 208 subclass 427]427 Subclass 427 indent level is 1 Including burning of feed or product
[List of Pre Grant Publications for class 208 subclass 428][List of Patents for class 208 subclass 428]428 Subclass 428 indent level is 1 Including contact with extraneous additive other than hydrogen, e.g., solvent, etc.
 [List of Pre Grant Publications for class 208 subclass 12][List of Patents for class 208 subclass 12]12 COLORNG TREATMENTS (INCLUDES FLUORESCENCE)
 [List of Pre Grant Publications for class 208 subclass 13][List of Patents for class 208 subclass 13]13 TREATMENT OF REFINING SLUDGE
[List of Pre Grant Publications for class 208 subclass 14][List of Patents for class 208 subclass 14]14 PRODUCTS AND COMPOSITIONS
[List of Pre Grant Publications for class 208 subclass 24][List of Patents for class 208 subclass 24]24 PARAFFIN WAX; TREATMENT OR RECOVERY
[List of Pre Grant Publications for class 208 subclass 39][List of Patents for class 208 subclass 39]39 ASPHALTS, TARS, PITCHES AND RESINS; MAKING, TREATING AND RECOVERY
[List of Pre Grant Publications for class 208 subclass 46][List of Patents for class 208 subclass 46]46 CHEMICAL CONVERSION OF HYDROCARBONS
 [List of Pre Grant Publications for class 208 subclass 47][List of Patents for class 208 subclass 47]47 Subclass 47 indent level is 1 With prevention of corrosion or erosion in system
[List of Pre Grant Publications for class 208 subclass 48R][List of Patents for class 208 subclass 48R]  48R Subclass 48R indent level is 1 With prevention or removal of deleterious carbon accumulations or equipment
[List of Pre Grant Publications for class 208 subclass 49][List of Patents for class 208 subclass 49]49 Subclass 49 indent level is 1 Plural serial stages of chemical conversion
[List of Pre Grant Publications for class 208 subclass 78][List of Patents for class 208 subclass 78]78 Subclass 78 indent level is 1 Plural parallel stages of chemical conversion
[List of Pre Grant Publications for class 208 subclass 81][List of Patents for class 208 subclass 81]81 Subclass 81 indent level is 1 With contacting vapor porducts with liquid feed (i.e., product scrubbing and feed stripping)
[List of Pre Grant Publications for class 208 subclass 85][List of Patents for class 208 subclass 85]85 Subclass 85 indent level is 1 With preliminary treatment of feed
[List of Pre Grant Publications for class 208 subclass 95][List of Patents for class 208 subclass 95]95 Subclass 95 indent level is 1 With subsequent treatment of products
[List of Pre Grant Publications for class 208 subclass 106][List of Patents for class 208 subclass 106]106 Subclass 106 indent level is 1 Cracking
[List of Pre Grant Publications for class 208 subclass 107][List of Patents for class 208 subclass 107]107 Subclass 107 indent level is 2 Hydrogenative
[List of Pre Grant Publications for class 208 subclass 113][List of Patents for class 208 subclass 113]113 Subclass 113 indent level is 2 Catalytic
[List of Pre Grant Publications for class 208 subclass 125][List of Patents for class 208 subclass 125]125 Subclass 125 indent level is 2 With nonreactive material
 [List of Pre Grant Publications for class 208 subclass 131][List of Patents for class 208 subclass 131]131 Subclass 131 indent level is 2 Soaking
 [List of Pre Grant Publications for class 208 subclass 132][List of Patents for class 208 subclass 132]132 Subclass 132 indent level is 2 With heating in tubular confined stream
[List of Pre Grant Publications for class 208 subclass 133][List of Patents for class 208 subclass 133]133 Subclass 133 indent level is 1 Reforming (includes dehydrogenation, isomerization, cyclization, aromatization, alkylation, dealkylation reactions)
[List of Pre Grant Publications for class 208 subclass 142][List of Patents for class 208 subclass 142]142 Subclass 142 indent level is 1 Hydrogenation (saturation)
[List of Pre Grant Publications for class 208 subclass 146][List of Patents for class 208 subclass 146]146 Subclass 146 indent level is 1 Solids contacting and mixing
[List of Pre Grant Publications for class 208 subclass 177][List of Patents for class 208 subclass 177]177 REFINING
 [List of Pre Grant Publications for class 208 subclass 178][List of Patents for class 208 subclass 178]178 Subclass 178 indent level is 1 With reagent feed control
[List of Pre Grant Publications for class 208 subclass 179][List of Patents for class 208 subclass 179]179 Subclass 179 indent level is 1 Purifying used oil
[List of Pre Grant Publications for class 208 subclass 187][List of Patents for class 208 subclass 187]187 Subclass 187 indent level is 1 Water removal (dehydration)
[List of Pre Grant Publications for class 208 subclass 189][List of Patents for class 208 subclass 189]189 Subclass 189 indent level is 1 Sweetening
[List of Pre Grant Publications for class 208 subclass 208R][List of Patents for class 208 subclass 208R]  208R Subclass 208R indent level is 1 Sulfur removal (free or combined sulfur)
[List of Pre Grant Publications for class 208 subclass 209][List of Patents for class 208 subclass 209]209 Subclass 209 indent level is 2 With hydrogen
 [List of Pre Grant Publications for class 208 subclass 218][List of Patents for class 208 subclass 218]218 Subclass 218 indent level is 2 Split treatment
[List of Pre Grant Publications for class 208 subclass 219][List of Patents for class 208 subclass 219]219 Subclass 219 indent level is 2 With acids
[List of Pre Grant Publications for class 208 subclass 226][List of Patents for class 208 subclass 226]226 Subclass 226 indent level is 2 With alkali or alkali earth metal compound (except clays)
 [List of Pre Grant Publications for class 208 subclass 236][List of Patents for class 208 subclass 236]236 Subclass 236 indent level is 2 With nitrogen containing treating reagent
[List of Pre Grant Publications for class 208 subclass 237][List of Patents for class 208 subclass 237]237 Subclass 237 indent level is 2 With organic reagent
 [List of Pre Grant Publications for class 208 subclass 241][List of Patents for class 208 subclass 241]241 Subclass 241 indent level is 2 With free halogen or nonmetal halide containing reagent
 [List of Pre Grant Publications for class 208 subclass 242][List of Patents for class 208 subclass 242]242 Subclass 242 indent level is 2 With sulfur oxides
 [List of Pre Grant Publications for class 208 subclass 243][List of Patents for class 208 subclass 243]243 Subclass 243 indent level is 2 With Group VI metal or compound
 [List of Pre Grant Publications for class 208 subclass 244][List of Patents for class 208 subclass 244]244 Subclass 244 indent level is 2 With Group VIII metal or compound
 [List of Pre Grant Publications for class 208 subclass 245][List of Patents for class 208 subclass 245]245 Subclass 245 indent level is 2 With silicon or compound thereof
 [List of Pre Grant Publications for class 208 subclass 246][List of Patents for class 208 subclass 246]246 Subclass 246 indent level is 2 With Group IB metal or compound
 [List of Pre Grant Publications for class 208 subclass 247][List of Patents for class 208 subclass 247]247 Subclass 247 indent level is 2 With Group IIB metal or compound
 [List of Pre Grant Publications for class 208 subclass 248][List of Patents for class 208 subclass 248]248 Subclass 248 indent level is 2 With Group III metal or compound
 [List of Pre Grant Publications for class 208 subclass 249][List of Patents for class 208 subclass 249]249 Subclass 249 indent level is 2 With Group IV, V, VII metal or compound
 [List of Pre Grant Publications for class 208 subclass 250][List of Patents for class 208 subclass 250]250 Subclass 250 indent level is 2 Solids contacting and mixing
 [List of Pre Grant Publications for class 208 subclass 208M][List of Patents for class 208 subclass 208M]208M Subclass 208M indent level is 2 Using free alkali metal
[List of Pre Grant Publications for class 208 subclass 251R][List of Patents for class 208 subclass 251R]  251R Subclass 251R indent level is 1 Metal contaminant removal
[List of Pre Grant Publications for class 208 subclass 254R][List of Patents for class 208 subclass 254R]  254R Subclass 254R indent level is 1 Nitrogen contaminant removal
[List of Pre Grant Publications for class 208 subclass 255][List of Patents for class 208 subclass 255]255 Subclass 255 indent level is 1 Gum or gum former removal
[List of Pre Grant Publications for class 208 subclass 262.1][List of Patents for class 208 subclass 262.1]262.1 Subclass 262.1 indent level is 1 Halogen contaminant removal
 [List of Pre Grant Publications for class 208 subclass 263][List of Patents for class 208 subclass 263]263 Subclass 263 indent level is 1 Organic acid or phenol contaminant removal
 [List of Pre Grant Publications for class 208 subclass 264][List of Patents for class 208 subclass 264]264 Subclass 264 indent level is 1 With hydrogen
[List of Pre Grant Publications for class 208 subclass 265][List of Patents for class 208 subclass 265]265 Subclass 265 indent level is 1 With acids
[List of Pre Grant Publications for class 208 subclass 283][List of Patents for class 208 subclass 283]283 Subclass 283 indent level is 1 With alkali or alkali earth metal compound (except clays)
 [List of Pre Grant Publications for class 208 subclass 289][List of Patents for class 208 subclass 289]289 Subclass 289 indent level is 1 With nitrogen containing compound
[List of Pre Grant Publications for class 208 subclass 290][List of Patents for class 208 subclass 290]290 Subclass 290 indent level is 1 With organic compound
 [List of Pre Grant Publications for class 208 subclass 292][List of Patents for class 208 subclass 292]292 Subclass 292 indent level is 1 With boron, phosphorus, arsenic, antimony or bismuth containing treating agent
 [List of Pre Grant Publications for class 208 subclass 293][List of Patents for class 208 subclass 293]293 Subclass 293 indent level is 1 With sulfur containing treating agent
 [List of Pre Grant Publications for class 208 subclass 294][List of Patents for class 208 subclass 294]294 Subclass 294 indent level is 1 With free metal
 [List of Pre Grant Publications for class 208 subclass 295][List of Patents for class 208 subclass 295]295 Subclass 295 indent level is 1 With Group IV, V, VI, VII or VIII metal compound
 [List of Pre Grant Publications for class 208 subclass 296][List of Patents for class 208 subclass 296]296 Subclass 296 indent level is 1 With Group IB or IIB metal compound
 [List of Pre Grant Publications for class 208 subclass 297][List of Patents for class 208 subclass 297]297 Subclass 297 indent level is 1 With Group III metal compound (except clays)
 [List of Pre Grant Publications for class 208 subclass 298][List of Patents for class 208 subclass 298]298 Subclass 298 indent level is 1 With liquid treating agent (includes slurries of solids)
[List of Pre Grant Publications for class 208 subclass 299][List of Patents for class 208 subclass 299]299 Subclass 299 indent level is 1 With solid catalyst or absorbent
[List of Pre Grant Publications for class 208 subclass 308][List of Patents for class 208 subclass 308]308 FRACTIONATION
 [List of Pre Grant Publications for class 208 subclass 309][List of Patents for class 208 subclass 309]309 Subclass 309 indent level is 1 Deasphalting
[List of Pre Grant Publications for class 208 subclass 310R][List of Patents for class 208 subclass 310R]  310R Subclass 310R indent level is 1 Adsorption
[List of Pre Grant Publications for class 208 subclass 311][List of Patents for class 208 subclass 311]311 Subclass 311 indent level is 1 Liquid extraction with solvents
[List of Pre Grant Publications for class 208 subclass 340][List of Patents for class 208 subclass 340]340 Subclass 340 indent level is 1 Recovery of mineral oil from natural or converted gases
[List of Pre Grant Publications for class 208 subclass 347][List of Patents for class 208 subclass 347]347 Subclass 347 indent level is 1 Distillation
 [List of Pre Grant Publications for class 208 subclass 370][List of Patents for class 208 subclass 370]370 MISCELLANEOUS
 
CROSS-REFERENCE ART COLLECTIONS
 
 [List of Pre Grant Publications for class 208 subclass 950][List of Patents for class 208 subclass 950]950 PROCESSING OF "FISCHER-TROPSCH" CRUDE
 [List of Pre Grant Publications for class 208 subclass 951][List of Patents for class 208 subclass 951]951 SOLID FEED TREATMENT WITH A GAS OTHER THAN AIR, HYDROGEN OR STEAM
 [List of Pre Grant Publications for class 208 subclass 952][List of Patents for class 208 subclass 952]952 SOLID FEED TREATMENT UNDER SUPERCRITICAL CONDITIONS
 
FOREIGN ART COLLECTIONS
 
      FOR000          CLASS-RELATED FOREIGN DOCUMENTS
 
DIGESTS
 
 [List of Pre Grant Publications for class 208 subclass DIG1][List of Patents for class 208 subclass DIG1] DIG1 AUTOMATIC CONTROL
 [List of Pre Grant Publications for class 208 subclass DIG2][List of Patents for class 208 subclass DIG2] DIG2 MOLECULAR SIEVE