| | CLASS NOTES |
| 1 | DF | PRODUCT BLEND, E.G., COMPOSITION, ETC., OR BLENDING PROCESS PER SE {5} |
| 15 | DF | HYDRATE OR PRODUCTION THEREOF |
| 16 | DF | COMPOUND OR REACTION PRODUCT MIXTURE {3} |
| 240 | DF | PRODUCTION OF HYDROCARBON MIXTURE FROM REFUSE OR VEGETATION {2} |
| 250 | DF | ADDING HYDROGEN TO UNSATURATED BOND OF HYDROCARBON, I.E., HYDROGENATION {10} |
| 300 | DF | PLURAL PARALLEL SYNTHESES {3} |
| 310 | DF | PLURAL SERIAL DIVERSE SYNTHESES {8} |
| 350 | DF | ALICYCLIC COMPOUND SYNTHESIS {11} |
| 400 | DF | AROMATIC COMPOUND SYNTHESIS {15} |
| 500 | DF | UNSATURATED COMPOUND SYNTHESIS {14} |
| 700 | DF | SATURATED COMPOUND SYNTHESIS {11} |
| 800 | DF | PURIFICATION, SEPARATION, OR RECOVERY {7} |
| 899 | DF | MISCELLANEOUS PROCESS, E.G., INDETERMINATE MODIFICATION OF A PROPERTY, STORAGE, TRANSPORTATION, ETC. |
| | ****************************** |
| | CROSS-REFERENCE ART COLLECTIONS |
| | ****************************** |
| * | DF | CATALYST AND RECYCLE CONSIDERATIONS {6} |
| * | DF | HEAT CONSIDERATIONS {2} |
| * | DF | APPARATUS CONSIDERATIONS {2} |
| * | DF | SPECIAL CHEMICAL CONSIDERATIONS {9} |
| * | DF | MISCELLANEOUS CONSIDERATIONS {7} |
