US PATENT SUBCLASS 44 / 415
.~.~ Compound of indeterminate structure prepared by reacting a phenol, an aldehyde, and ammonia or substituted ammonia

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}
412  DF  .~ Organic nitrogen compound containing {12}
415.~.~ Compound of indeterminate structure prepared by reacting a phenol, an aldehyde, and ammonia or substituted ammonia

DEFINITION

Classification: 44/415

Compound of indeterminate structure prepared by reacting a phenol, an aldehyde, and ammonia or substituted ammonia:

(under subclass 412) Compositions which contain a compound of indeterminate structure, resulting from the reaction of a phenol, an aldehyde, and ammonia or substituted ammonia.

(1) Note. Many compounds which result from this type reaction are of known structure. In this class, subclasses 424+ provide for many compounds of this type.