(under subclass 1) Subject matter containing a hydrocarbon and a nonhydrocarbon.
(1) Note. This subclass includes, for example, polymerizable hydrocarbons, e.g., styrene, butadiene, etc., admixed with a stabilizing or preserving agent.
(2) Note. In the compositions of this and indented subclasses, the nonhydrocarbon is added to improve the general utility of the hydrocarbon, e.g., by preserving it, etc. Where the nonhydrocarbon additive improves a utility of the hydrocarbon which is provided for elsewhere, the patent is classified elsewhere; for example, where the additive improves the dielectric properties, it is in Class 252, subclasses 570+, etc.
SEE OR SEARCH CLASS
252, Compositions,
380+, particularly subclasses 397+, for preserving agents, per se.
423, Chemistry of Inorganic Compounds, for a compound of that class mixed with a preserving agent, etc.
