US PATENT SUBCLASS 527 / 503
.~.~ With phenolic reactant or aldehyde 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  DF  .~ FROM COAL OR BITUMINOUS MATERIAL, EXTRACT OR DERIVATIVE THEREOF, OR FATTY STILL RESIDUE REACTANT {2}
503.~.~ With phenolic reactant or aldehyde reactant

DEFINITION

Classification: 527/503

With phenolic or aldehyde or derivative reactant:

(under subclass 500) Subject matter wherein a phenolic reactant or aldehyde or derivative reactant is additionally present.

SEE OR SEARCH CLASS

525, Synthetic Resins or Natural Rubbers, Glossary, for a definition of the terms "phenolic reactant", "aldehyde" and "aldehyde derivative".