(under subclass 2) Processes in which the dispenser receiver is of the aerosol type, i.e., the material to be dispensed, powder or liquid, is dissolved in or carried by a vaporizing
propellant which forms the charge of the dispenser.
SEE OR SEARCH THIS CLASS, SUBCLASS:
20, for apparatus for filling or refilling aerosol type dispensers.
SEE OR SEARCH CLASS
222, Dispensing,
394+, for aerosol type dispensers. 239, Fluid Sprinkling, Spraying, and Diffusing,
8+, for processes of mixing a material with a fluid and then spraying; subclasses 337+ for apparatus spraying a plurality of materials and comprising a holder for one material to be entrained or dissolved in a gas; subclass 372 for aerosol type spray holders with a specifically claimed nozzle; subclasses 398+ for mixing and discharging a plurality of fluids; and subclass 573 for a discharge nozzle having a valve providing an expansion chamber of the aerosol type.
516, Colloid Systems and Wetting Agents; Subcombinations Thereof; Processes of Making, Stabilizing, Breaking, or Inhibiting,
1+, for continuous gas or vapor phase colloid system (e.g., smoke, fog, aerosol, cloud, mist) or agents for such systems or making or stabilizing such systems or agents, when generically claimed or when there is no hierarchically superior provision in the USPC for the specifically claimed art, especially subclasses 6+ for a colloid system which contains a propellant which contains an intended component with a boiling point below 68 oF/20 oC at one atmosphere, i.e., exists as gas or vapor at STP, such as propellants containing compressed air, or adsorbed or chemically bound CO 2.
