US PATENT SUBCLASS 521 / 72
.~.~.~ Utilizing cell forming agent other than air

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}
65  DF  .~.~ Process of forming a cellular product from an aqueous latex, aqueous dispersion, or aqueous emulsion containing a solid polymer; process of preparing a latex, dispersion, or emulsion containing a solid polymer which is designed to be formed into a cellular product, or composition thereof {7}
72.~.~.~ Utilizing cell forming agent other than air

DEFINITION

Classification: 521/72

Utilizing cell forming agent other than air:

(under subclass 65) Subject matter wherein an agent other than air, per se, is utilized as a means to generate a cellular product.

(1) Note. The agent may be directly introduced into the aqueous latex, aqueous emulsion, or aqueous dispersion or may be formed in situ.