US PATENT SUBCLASS 44 / 330
.~.~ Compound of indeterminate structure prepared by reacting a heterocyclic compound of known structure

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


44 /   HD   FUEL AND RELATED COMPOSITIONS

300  DF  LIQUID FUELS (EXCLUDING FUELS THAT ARE EXCLUSIVELY MIXTURES OF LIQUID HYDROCARBONS) {31}
329  DF  .~ Heterocyclic carbon compound containing a hetero ring having chalcogen or nitrogen as the only ring hetero atoms {6}
330.~.~ Compound of indeterminate structure prepared by reacting a heterocyclic compound of known structure {2}
331  DF  .~.~.~> The heterocyclic compound reactant is a dicarboxylic acid anhydride (e.g., reaction product of succinic anhydride with a polyamine, etc.)
332  DF  .~.~.~> The heterocyclic compound reactant is an oxirane (e.g., reaction product of epihalohydrin with amine, epoxide reactions, etc.)

DEFINITION

Classification: 44/330

Compound of indeterminate structure prepared by reacting a heterocyclic compound of known structure:

(under subclass 329) Compositions which contain a compound of indeterminate structure, resulting from the reaction of a heterocyclic compound of known structure.