US PATENT SUBCLASS 524 / 107
.~.~.~.~.~ At least one chalcogen atom as part of a hetero ring (chalcogen=O, Se, Te) DNRM

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}
107.~.~.~.~.~ At least one chalcogen atom as part of a hetero ring (chalcogen=O, Se, Te) DNRM {5}
108  DF  .~.~.~.~.~.~> Two or more chalcogen atoms in the same hetero ring
109  DF  .~.~.~.~.~.~> Two or more chalcogen rings
110  DF  .~.~.~.~.~.~> Six-membered chalcogen ring
111  DF  .~.~.~.~.~.~> Five-membered chalcogen ring {2}
114  DF  .~.~.~.~.~.~> Three-membered chalcogen ring

DEFINITION

Classification: 524/107

At least one chalcogen atom as part of a hetero ring (chalcogen=O, Se, Te) DNRM:

(under subclass 81) Subject matter wherein the organic designated nonreactant material is a compound containing a hetero ring with at least one chalcogen atom (i.e., oxygen, selenium, or tellurium) in the ring.

(1) Note. See the Class 520 Glossary for the definition of "heterocyclic".

(2) Note. The hetero ring herein may be fused or bridged to a ring system; and see the Class 520 Glossary for a definition of "fused or bridged ring system".

SEE OR SEARCH THIS CLASS, SUBCLASS:

277, for a beeswax containing a lactone.