US PATENT SUBCLASS 528 / 89
.~.~.~.~ Material contains a phosphorus atom

Current as of: June, 1999
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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}
87  DF  .~.~ From 1,2-epoxy-containing phenolic reactant or with 1,2-epoxy-containing reactant {12}
88  DF  .~.~.~ Polymerizing in the presence of a specified material other than reactant {6}
89.~.~.~.~ Material contains a phosphorus atom

DEFINITION

Classification: 528/89

(under subclass 88) Subject matter wherein the specified material contains phosphorus atom(s).