 Electronic File Wrappers |  Electronic Patent Documents |  Paper Patent Documents | Current as of: June, 1999
|  and Services |
| CLASS NOTES | ||
| 1 | DF | SYNTHETIC DRYING OILS |
| 2 | DF | PHENOLIC OR TOXIC OILS |
| 3 | DF | OXIDATION OF MINERAL OILS {2} |
| 390 | DF | TAR SAND TREATMENT WITH LIQUID {1} |
| 400 | DF | BY TREATMENT OF SOLID MINERAL, E.G., COAL LIQUEFACTION, ETC. {13} |
| 12 | DF | COLORNG TREATMENTS (INCLUDES FLUORESCENCE) |
| 13 | DF | TREATMENT OF REFINING SLUDGE |
| 14 | DF | PRODUCTS AND COMPOSITIONS {4} |
| 24 | DF | PARAFFIN WAX; TREATMENT OR RECOVERY {4} |
| 39 | DF | ASPHALTS, TARS, PITCHES AND RESINS; MAKING, TREATING AND RECOVERY {4} |
| 46 | DF | CHEMICAL CONVERSION OF HYDROCARBONS {11} |
| 177 | DF | REFINING {23} |
| 308 | DF | FRACTIONATION {5} |
| 370 | DF | MISCELLANEOUS |
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| CROSS-REFERENCE ART COLLECTIONS | ||
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| 950 | DF | PROCESSING OF "FISCHER-TROPSCH" CRUDE |
| 951 | DF | SOLID FEED TREATMENT WITH A GAS OTHER THAN AIR, HYDROGEN OR STEAM |
| 952 | DF | SOLID FEED TREATMENT UNDER SUPERCRITICAL CONDITIONS |
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| DIGESTS | ||
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| DIG 1 | DF | Automatic control |
| DIG 2 | DF | Molecular sieve |