US PATENT SUBCLASS 521 / 55
.~.~.~ Treating a cellular solid polymer by adding a material thereto which forms a composition therewith

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

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {3}
50  DF  .~ CELLULAR PRODUCTS OR PROCESSES OF PREPARING A CELLULAR PRODUCT, E.G., FOAMS, PORES, CHANNELS, ETC. {27}
53  DF  .~.~ Treating a cellular solid polymer by adding a material thereto which reacts with the polymer or forms a composition therewith, or products of said treating process {2}
55.~.~.~ Treating a cellular solid polymer by adding a material thereto which forms a composition therewith

DEFINITION

Classification: 521/55

Treating a cellular solid polymer by adding a material thereto which forms a composition therewith:

(under subclass 53) Subject matter wherein a material is added to the previously formed solid cellular material so as to form a desired composition therewith.

SEE OR SEARCH CLASS

252, Compositions,

567, for a web or sheet, e.g., of porous polymer, impregnated with a defined liquid dielectric.