US PATENT SUBCLASS 524 / 338
.~.~.~.~.~.~.~.~.~ Two or more aryl-OH groups


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

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {1}
*  DD  .~ PROCESSES OF PREPARING A DESIRED OR INTENTIONAL COMPOSITION OF AT LEAST ONE NONREACTANT MATERIAL AND AT LEAST ONE SOLID POLYMER OR SPECIFIED INTERMEDIATE CONDENSATION PRODUCT, OR PRODUCT THEREOF (Class 523, subclass 1) {17}
1  DF  .~.~ Adding a NRM to a preformed solid polymer or preformed specified intermediate condensation product, composition thereof; or process of treating or composition thereof {31}
80  DF  .~.~.~ DNRM which is other than silicon dioxide, glass, titanium dioxide, water, halohydrocarbon, hydrocarbon, or elemental carbon {4}
81  DF  .~.~.~.~ Organic DNRM {21}
323  DF  .~.~.~.~.~ Aryl-OH or salt or aryl-O-metal bond DNRM {12}
334  DF  .~.~.~.~.~.~ Oxygen other than as part of an aryl-OH group {2}
335  DF  .~.~.~.~.~.~.~ C=O group {1}
336  DF  .~.~.~.~.~.~.~.~ A single C=O group {2}
338.~.~.~.~.~.~.~.~.~ Two or more aryl-OH groups


DEFINITION

Classification: 524/338

Two or more aryl-OH groups:

(under subclass 336) Subject matter wherein the carbonyl compound contains two or more aryl-OH groups, e.g., 2,2-dihydroxybenzophenone, etc.