US PATENT SUBCLASS 428 / 423.1
.~ Of polyamidoester (polyurethane, polyisocyanate, polycarbamate, etc.)

Current as of: June, 1999
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428 /   HD   STOCK MATERIAL OR MISCELLANEOUS ARTICLES

411.1  DF  COMPOSITE (NONSTRUCTURAL LAMINATE) {25}
423.1.~ Of polyamidoester (polyurethane, polyisocyanate, polycarbamate, etc.) {11}
423.3  DF  .~.~> Next to second layer of polyamidoester
423.4  DF  .~.~> Next to animal skin or membrane
423.5  DF  .~.~> Next to polyamide (nylon, etc.)
423.7  DF  .~.~> Next to polyester (polyethylene terephthalate, etc.)
423.9  DF  .~.~> Next to natural rubber
424.2  DF  .~.~> Next to addition polymer of ethylenically unsaturated monomer {4}
425.1  DF  .~.~> Next to cellulosic
425.3  DF  .~.~> Next to aldehyde or ketone condensation product (phenol-aldehyde, etc.)
425.5  DF  .~.~> Next to silicon-containing (silicone, cement, etc.) layer {1}
425.8  DF  .~.~> Next to free metal
425.9  DF  .~.~> Particulate metal or metal compound-containing

DEFINITION

Classification: 428/423.1

Of polyamidoester (polyurethane, polyisocyanate, polycarbamate, etc.):

(under subclass 411.1) Product in which one layer contains a polymer characterized by both amide and ester linkages in the polymer chain in any combination or ration.

(1) Note. A patent claiming a laminate including a layer containing polyurethane, or the polymerized reaction product of isocyanates and alcohols, will be placed in this subclass or its indents.

(2) Note. Polyamidoester includes Polyimidoester.

(3) Note. The term polyisocyanate is sometimes used to designate polyurethanes and it is not always clear what is intended by the term in some patents. The use of any of the following terms: polyisocyanate, polyurethane, urethane resin, polycarbamate or the disclosure of the reaction products of disocyanate with any glycols, diamines, amino alcohols, amides, or esters will be deemed a sufficient disclosure of polyamidoester or polyisocyanate to meet the definition of this subclass.

SEE OR SEARCH THIS CLASS, SUBCLASS:

71, 158+ and 310+, for other products containing a foamed material as a component thereof, especially urethane.

474.4+, for a product having a layer of polymer comprised solely of amide linkages in the polymer chain, including a polyamide with ester linkages in a side chain. 480+, for a product having a layer of polymer comprised solely of ester linkages in the polymer chain, including a polyester having amide linkages in a side chain.

SEE OR SEARCH CLASS

442, Fabric (Woven, Knitted, or Nonwoven Textile or Cloth, etc.),

59+, for a coated or impregnated fabric which may include a polyamidoester coating.