US PATENT SUBCLASS 523 / 218
.~.~ Process of forming a composition having a nonreactant material selected for its special void characteristic; or composition containing same, e.g., syntactic foam, etc.

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

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {1}
1  DF  .~ PROCESSES OF PREPARING A DESIRED OR INTENTIONAL COMPOSITION OF AT LEAST ONE NONREACTANT MATERIAL AND AT LEAST ONE SOLID POLYMER OR SPECIFIED INTERMEDIATE CONDENSATION PRODUCT, OR PRODUCT THEREOF {71}
218.~.~ Process of forming a composition having a nonreactant material selected for its special void characteristic; or composition containing same, e.g., syntactic foam, etc. {1}
219  DF  .~.~.~> Glass void

DEFINITION

Classification: 523/218

Process of forming a composition having a nonreactant material selected for its special void characteristic; or composition containing same, e.g., syntactic foam, etc.:

(under subclass 1) Subject matter wherein a nonreactant or nonsolid polymer material which is described as having at least one void therein is admixed with a material so as to form a composition therewith, or the composition formed from such an admixing process, e.g., syntactic foams, etc.

(1) Note. A material will not be considered as having a void therein unless it is specifically noted in the claims or solely described in the specification as having voids.

(2) Note. Included within the definition of void are those materials described as containing cells, pores, cavities, interstices or fissures.

(3) Note. Included herein are those processes wherein the void may be subsequently filled or destroyed.

SEE OR SEARCH THIS CLASS, SUBCLASS:

200+, for a material encapsulated or impregnated in a matrix or for a filled void.

SEE OR SEARCH CLASS

521, Synthetic Resins or Natural Rubbers, 50+, for a solid synthetic polymer containing a void therein and which void containing polymer is not the result of the addition of a nonpolymeric void or cell-containing material; and in particular for subclasses 53+ for the addition of a

material to a cellular solid polymer.