US PATENT SUBCLASS 528 / 171
.~.~ Sulfur reactant contains sulfur directly bonded to oxygen

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

Internet Version by PATENTEC © 1999      Terms of Use


528 /   HD   SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {23}
86  DF  .~ FROM PHENOL, PHENOL ETHER, OR INORGANIC PHENOLATE {15}
171.~.~ Sulfur reactant contains sulfur directly bonded to oxygen {3}
172  DF  .~.~.~> Nitrogen-containing compound is a reactant other than wherein nitrogen is solely present as a carboxylic acid derivative
173  DF  .~.~.~> Carboxylic acid or derivative is a reactant
174  DF  .~.~.~> Halogen-containing material is a reactant {1}

DEFINITION

Classification: 528/171

(under subclass 86) Subject matter wherein a polymer is derived (1) from a phenol, phenol ether, or inorganic phenolate containing a sulfur-to-oxygen bond, or (2) from a phenol, phenol ether, or an inorganic phenolate and a reactant which contains a sulfur-to-oxygen bond.