521 / | HD | SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES |
|
* | DD | SYNTHETIC RESINS (Class 520, Subclass 1) {3} |
50 | DF | .~ CELLULAR PRODUCTS OR PROCESSES OF PREPARING A CELLULAR PRODUCT, E.G., FOAMS, PORES, CHANNELS, ETC. {27} |
65 | DF | .~.~ Process of forming a cellular product from an aqueous latex, aqueous dispersion, or aqueous emulsion containing a solid polymer; process of preparing a latex, dispersion, or emulsion containing a solid polymer which is designed to be formed into a cellular product, or composition thereof {7} |
68 | | .~.~.~ Adding fibrous material to a latex, dispersion, or emulsion containing a solid polymer |