US PATENT SUBCLASS 516 / 103
.~.~.~ The compound contains plural peptide linkages, i.e., compound formed from amino acids, natural or synthetic, by reaction of a carboxyl group of one such amino acid with an amino group of another same or different such amino acid

Current as of: June, 1999
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516 /   HD   COLLOID SYSTEMS AND WETTING AGENTS; SUBCOMBINATIONS THEREOF; PROCESSES OF

98  DF  CONTINUOUS OR SEMICONTINUOUS SOLID PHASE (I.E., SYSTEMS WHICH EXHIBIT PLASTICITY, ELASTICITY, OR RIGIDITY): COLLOID SYSTEMS; COMPOSITIONS CONTAINING AN AGENT FOR MAKING OR STABILIZING COLLOID SYSTEMS; PROCESSES OF MAKING OR STABILIZING COLLOID SYSTEMS; PROCESSES OF PREPARING THE COMPOSITIONS (E.G., GEL, PASTE, GELLED EMULSION, FLOC) {4}
99  DF  .~ The solid phase contains organic material {3}
102  DF  .~.~ The organic material contains organic compound containing nitrogen, except if present solely as NH4+ {1}
103.~.~.~ The compound contains plural peptide linkages, i.e., compound formed from amino acids, natural or synthetic, by reaction of a carboxyl group of one such amino acid with an amino group of another same or different such amino acid

DEFINITION

Classification: 516/103

The compound contains plural peptide linkages, i.e., compound formed from amino acids, natural or synthetic, by reaction of a carboxyl group of one such amino acid with an amino group of another same or different such amino acid:

(under subclass 102) Subject matter in which the organic* compound which contains Nitrogen contains plural peptide linkages, i.e., compound formed from natural or synthetic amino acids.

(1) Note. Materials* used as agents* which are impurely or crudely derived from plant or animal sources, are assumed to contain Nitrogen-containing organic* compounds (i.e., the DNA and proteins), unless clearly separated out, such as cellulose, carbohydrate fractions, etc.

SEE OR SEARCH THIS CLASS, SUBCLASS:

101, for colloid systems in which the solid phase contains an organic* compound which contains Nitrogen (except if present solely as NH 4+), which coats, impregnates, or surface modifies an inorganic* material*.

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106, Compositions: Coating or Plastic, appropriate subclasses for coating or plastic compositions, and materials or ingredients used in the making of coating or plastic compositions, which are not elsewhere classified.

646, for inorganic settleable composition containing protein which sets or hardens when mixed with water or aqueous solutions, usually forming a hard, stone-like product, and forming foam, cellular, hollow, or porous material.

430, Radiation Imagery Chemistry: Process, Composition, or Product Thereof, 199+, for films used for image forming and transfer (e.g., instant photography) which may include a gel, subclass 404 where a gel or web is used in a developer for nonradiation sensitive image processing, subclasses 495.1+ for film which may contain gel (e.g., gelatin).

530, Chemistry: Natural Resins or Derivatives; Peptides or Proteins; Lignins or Reaction Products Thereof, appropriate subclasses for colloid systems such as gel-like proteins; areas known to have documents related to colloid systems include:

354+, for gelatin, subclass 356 for collagen, subclasses 360+

for casein or caseinate, subclasses 362+ for albumin, subclasses 370+ for plant or yeast proteins, subclasses 380+ for blood proteins (particularly 381+ for blood coagulation factors and fibrin, e.g., thromboplastin).