US PATENT SUBCLASS 521 / 102
.~.~.~ Ingredient is a protein containing material

Current as of: June, 1999
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521 /   HD   SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {3}
50  DF  .~ CELLULAR PRODUCTS OR PROCESSES OF PREPARING A CELLULAR PRODUCT, E.G., FOAMS, PORES, CHANNELS, ETC. {27}
99  DF  .~.~ Cellular product formation prior to or during solid polymer formation in the presence of a stated ingredient other than water {18}
102.~.~.~ Ingredient is a protein containing material

DEFINITION

Classification: 521/102

Ingredient is a protein containing material:

(under subclass 99) Subject matter wherein the stated ingredient contains a protein or a protein reaction product, e.g., gelatin, silk, etc.

(1) Note. A protein reaction product requires at the minimum the presence of a peptide group, i.e., an amide linkage between the amino radical of one amino acid and the carboxyl radical of another amino acid.