(under the class definition) Subject matter wherein foam is generated as by a gas entering a dye solution and causing bubbling and these bubble gases in dye liquor are applied to the material to be dyed.
(1) Note. Foam dyeing is usually used so as to limit the quantity of dye liquor applied to the material to be dyed.
SEE OR SEARCH CLASS
516, Colloid Systems and Wetting Agents; Subcombinations Thereof; Processes of Making, Stabilizing, Breaking, or Inhibiting,
10+, for foam colloid systems 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.
