US PATENT SUBCLASS 8 / 94.2
.~.~ With subsequent treatment

Current as of: June, 1999
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8 /   HD   BLEACHING AND DYEING; FLUID TREATMENT AND CHEMICAL MODIFICATION OF TEXTILES AND FIBERS

94.1 R  DF  TREATMENT OF HIDES, SKINS, FEATHERS AND ANIMAL TISSUES {9}
94.19 R  DF  .~ Tanning {8}
94.2.~.~ With subsequent treatment {1}
94.21  DF  .~.~.~> Organic material {1}

DEFINITION

Classification: 8/94.2

(under subclass 94.19) Processes including a significant treatment of the tanned hide or skin subsequent to the tanning.

(1) Note. This subclass includes process of tanning combined with a subsequent fluid treatment of the leather as well as a fluid treatment of leather, per se, where not otherwise provided for.

SEE OR SEARCH THIS CLASS, SUBCLASS:

101+, for the bleaching of leather.

436+, for the dyeing of leather.

SEE OR SEARCH CLASS 69, Leather Manufactures,

21, for processes of treating and working leather not involving a treatment with a fluid, and nonreactive fluid treatment combined with the mechanical working or nonfluid treatment of leather.

252, Compositions,

8.57, and the notes thereto, for compositions used in treating leather.

427, Coating Processes, particularly

323, 389 and 412 for processes of coating a proteinaceous base. The line between Class 427 and this class with respect to the treatment of leather with fluids and chemicals is as follows: Class 427 takes the treatment of leather which results in skin coating on the leather; this and the indented subclasses take (1) treatment with a material which chemically reacts with the leather treated and (2) treatment with nonreactive fluids which do not result in the production of a solid, adherent skin coating. This and indented subclasses include the treatment of leather with material which is capable of forming skin coatings when the materials are not used in such amounts as to produce a skin coating but only to impregnate or become absorbed in the leather. Class 427 also takes combinations of fluid treatments of hides, skins, or leather combined with the subsequent coating of the leather except where the said fluid treatment results in the chemical modification of the hide, skin, or leather (e.g., tanning).