US PATENT SUBCLASS 522 / 159
.~.~.~.~.~ Polyisoprene or natural rubber

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

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {1}
1  DF  .~ COMPOSITIONS TO BE POLYMERIZED BY WAVE ENERGY WHEREIN SAID COMPOSITION CONTAINS A RATE-AFFECTING MATERIAL; OR COMPOSITIONS TO BE MODIFIED BY WAVE ENERGY WHEREIN SAID COMPOSITION CONTAINS A RATE-AFFECTING MATERIAL; OR PROCESSES OF PREPARING OR TREATING A SOLID POLYMER UTILIZING WAVE ENERGY {27}
150  DF  .~.~ Processes of treating a solid polymer derived from ethylenic monomers only; or compositions therefore {4}
157  DF  .~.~.~ Solid polymer derived from monomer containing only carbon and hydrogen {3}
158  DF  .~.~.~.~ At least one reactant contains two or more ethylenic groups {1}
159.~.~.~.~.~ Polyisoprene or natural rubber

DEFINITION

Classification: 522/159

Polyisoprene or natural rubber:

(under subclass 158) Subject matter wherein the solid polymer is derived solely from isoprene or the product to be treated is natural rubber or a modified form thereof, e.g., rubber hydrochloride, etc.