US PATENT SUBCLASS 527 / 500
.~ FROM COAL OR BITUMINOUS MATERIAL, EXTRACT OR DERIVATIVE THEREOF, OR FATTY STILL RESIDUE REACTANT

Current as of: June, 1999
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527 /   HD   SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {6}
500.~ FROM COAL OR BITUMINOUS MATERIAL, EXTRACT OR DERIVATIVE THEREOF, OR FATTY STILL RESIDUE REACTANT {2}
501  DF  .~.~> With polyepoxide reactant or N=C=X reactant wherein X is chalcogen
503  DF  .~.~> With phenolic reactant or aldehyde reactant

DEFINITION

Classification: 527/500

FROM COAL OR BITUMINOUS MATERIAL, EXTRACT OR DERIVATIVE THEREOF, OR FATTY STILL RESIDUE REACTANT:

(under subclass 1) Subject matter under Class 520, ... wherein a solid polymer is derived from coal or bituminous material, extract or derivative thereof or fatty still residue by means of chemical reaction with an ethylenic reactant, or SICP or SPFI; or process of preparing said polymer.

(1) Note. In the absence of specific disclosure to the contrary, the coal, bituminous material, etc., will be treated as a nonethylenically unsaturated material.

SEE OR SEARCH CLASS

524, Synthetic Resins or Natural Rubbers, Glossary,

59, and 705 for the definition of the terms coal, bituminous material, extract or derivative thereof and fatty still residue.