| 526 / | HD | SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES | 
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| * | DD | SYNTHETIC RESINS (Class 520, Subclass 1) {8} | 
| 72 | DF | .~ POLYMERS FROM ONLY ETHYLENIC MONOMERS OR PROCESSES OF POLYMERIZING, POLYMERIZABLE COMPOSITIONS CONTAINING ONLY ETHYLENIC MONOMERS AS REACTANTS OR PROCESSES OF PREPARING {43} | 
| 89 | DF | .~.~ Polymerizing in the presence of a specified material other than monomer {28} | 
| 90 | DF | .~.~.~ Material contains transition metal or compound thereof {15} | 
| 113 |  | .~.~.~.~ Two or more diverse transition metal atoms in distinct compounds or in the same compound {2} | 
| 114 | DF | .~.~.~.~.~> Contains non-transition elemental metal, hydride thereof, or carbon to non transition metal atom bond {2} | 
| 117 | DF | .~.~.~.~.~> Contains Group VIII metal atom (Fe, Co, Ni, Ru, Rh, Pd, Os, Ir, Pt) |