US PATENT SUBCLASS 44 / 389
.~.~.~ Plural -C(=O)O- groups attached to each other directly or indirectly by nonionic bonding (e.g., polyesters, half ester-half acid compounds, etc.)

Current as of: June, 1999
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44 /   HD   FUEL AND RELATED COMPOSITIONS

300  DF  LIQUID FUELS (EXCLUDING FUELS THAT ARE EXCLUSIVELY MIXTURES OF LIQUID HYDROCARBONS) {31}
385  DF  .~ Containing organic -C(=O)O- compound (e.g., fatty acids, etc.) {8}
388  DF  .~.~ The single bonded oxygen is bonded directly to an additional carbon, which carbon may be single bonded to any element but may be multiple bonded only to carbon (i.e., carboxylic acid esters) {4}
389.~.~.~ Plural -C(=O)O- groups attached to each other directly or indirectly by nonionic bonding (e.g., polyesters, half ester-half acid compounds, etc.) {5}
390  DF  .~.~.~.~> Halogen or sulfur attached indirectly to the -C(=O)O- by nonionic bonding
391  DF  .~.~.~.~> Nitrogen attached indirectly to the -C(=O)O- by nonionic bonding {1}
393  DF  .~.~.~.~> Copolymer of olefinically unsaturated hydrocarbon monomer and additional monomer (e.g., ethylene-vinyl acetate copolymers, etc.) {3}
397  DF  .~.~.~.~> Polymer or copolymer of nonhydrocarbon olefinically unsaturated monomers polymerized through an olefinic double bond (e.g., trimer esters, etc.)
398  DF  .~.~.~.~> Mono- di-, or polyester of polycarboxylic acids

DEFINITION

Classification: 44/389

Plural -C(=O)O- groups attached to each other directly or indirectly by nonionic bonding (e.g., polyesters, half ester-half acid compounds, etc.):

(under subclass 388) Compositions wherein the -C(=O)O- group is attached directly or indirectly to an additional -(C=O)O- group by nonionic bonding.

(1) Note. An example of an ingredient provided for herein is: [figure]