US PATENT SUBCLASS 525 / 289
.~.~.~.~ Ethylenic reactant contains a fused- or bridged-ring system

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

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {4}
50  DF  .~ MIXING OF TWO OR MORE SOLID POLYMERS; MIXING OF SOLID POLYMER OR SICP WITH SICP OR SPFI; MIXING OF SICP WITH AN ETHYLENIC AGENT; MIXING OF SOLID POLYMER WITH A CHEMICAL TREATING OR ETHYLENIC AGENT; OR PROCESSES OF FORMING OR REACTING; OR THE RESULTANT PRODUCT OF ANY OF THE ABOVE OPERATIONS {32}
55  DF  .~.~ At least one solid polymer derived from ethylenic reactants only {25}
242  DF  .~.~.~ Polymer derived from ethylenic reactants only mixed with ethylenic reactant {21}
289.~.~.~.~ Ethylenic reactant contains a fused- or bridged-ring system {1}
290  DF  .~.~.~.~.~> Dicyclopentadiene-containing group

DEFINITION

Classification: 525/289

Ethylenic reactant contains a fused or bridged ring system:

(under subclass 242) Subject matter wherein the ethylenic reactant contains a fused or bridged ring system (e.g., 5-ethylidene 2-norbornene, etc.).

SEE OR SEARCH CLASS

520, Synthetic Resins or Natural Rubbers, for a definition of the term "fused or bridged ring system".