US PATENT SUBCLASS 524 / 358
.~.~.~.~.~.~.~ 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.

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  DF  .~.~.~.~.~.~ Two or more C(C=O)C groups {1}
358.~.~.~.~.~.~.~ 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: 524/358

Carbocyclic ring wherein at least two of the nuclear carbons thereof are double bonded directly to oxygen atoms so as to form two or C=O groups therewith, e.g., quinone, etc.:

(under subclass 357) Subject matter wherein the plural ketone compound contains at least one carbocyclic ring wherein at least two of the nuclear carbon atoms of the ring are double bonded directly to oxygen so as to form ketone groups therewith, e.g., quinone, benzoquinone, etc.

SEE OR SEARCH THIS CLASS, SUBCLASS:

357, for a plural ketone containing compound having a fused- or bridged-ring system wherein plural oxygen atoms are double bonded to the individual rings of the ring system that comprises the overall fused- or bridged-ring system and wherein no single individual ring is double bonded to two or more oxygen atoms.