US PATENT SUBCLASS 525 / 357
.~.~.~.~.~ Treating in the presence of a metal or metal-containing compound


Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use



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}
355  DF  .~.~.~ Chemical treating agent contains hydrogen halide, elemental halogen, organic halogen-containing compound, or compound containing only halogen atoms {2}
356  DF  .~.~.~.~ Treating in the presence of elemental halogen {2}
357.~.~.~.~.~ Treating in the presence of a metal or metal-containing compound


DEFINITION

Classification: 525/357

Treating in the presence of a metal or metal containing compound:

(under subclass 356) Subject matter wherein the chemical treating is performed in the presence of a metal or metal-containing compound.

SEE OR SEARCH CLASS

520, Synthetic Resins or Natural Rubbers, the Glossary, for a definition of the term "metal".