US PATENT SUBCLASS 524 / 357
.~.~.~.~.~.~ Two or more C(C=O)C 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}
356  DF  .~.~.~.~.~ Ketone or ketene DNRM, i.e., C(C=O)C or C=C=O {3}
357.~.~.~.~.~.~ Two or more C(C=O)C groups {1}
358  DF  .~.~.~.~.~.~.~> Carbocyclic ring wherein at least two of the nuclear carbons thereof are double bonded directly to oxygens atom so as to form two or more C=O groups therewith, e.g., quinone, etc.

DEFINITION

Classification: 524/357

Two or more C(C=O)C groups:

(under subclass 356) Subject matter wherein the designated nonreactant compound contains at least two ketone groups.

(1) Note. For purposes of this class, acompound containing a -C-n-C- group, wherein n is two or more, is considered as being a plural ketone containing compound. Additionally, a compound containing a -C--C-C- group is considered as having two ketone groups.