(under subclass 62.51) Compositions which contain a resin, wax, gum, or bitumenous material or modified forms thereof. The term gum includes, e.g., natural rubber and balatta. Many of the patents in this subclass are drawn to particles of magnetic material in a resin wax or gum binder for use as magnetic coatings or to be molded into magnetic articles (e.g., tapes).
(1) Note. This subclass includes, e.g., cellulose ethers and esters, drying oils, shellac, varnish, gum tragacanth, and modified natural resins.
SEE OR SEARCH THIS CLASS, SUBCLASS:
62.51, the definition thereof, for search information relative to related coating or molding materials in other classes.
