| 528 / | HD | SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES |
| * | DD | SYNTHETIC RESINS (Class 520, Subclass 1) {23} |
| 86 | DF | .~ FROM PHENOL, PHENOL ETHER, OR INORGANIC PHENOLATE {15} |
| 87 | DF | .~.~ From 1,2-epoxy-containing phenolic reactant or with 1,2-epoxy-containing reactant {12} |
| 106 | DF | .~.~.~ With at least one nonepoxy or nonphenolic reactant {9} |
| 109 | | .~.~.~.~ Non-1,2-epoxy, or nonphenolic reactant is a sulfur-containing material |