US PATENT SUBCLASS 428 / 321.5
.~.~.~ Encapsulated liquid

Current as of: June, 1999
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428 /   HD   STOCK MATERIAL OR MISCELLANEOUS ARTICLES

221  DF  WEB OR SHEET CONTAINING STRUCTURALLY DEFINED ELEMENT OR COMPONENT {9}
320.2  DF  .~ Composite having a component wherein a constituent is liquid or is contained within preformed walls (e.g., impregnant-filled, previously void containing component, etc.) {3}
321.1  DF  .~.~ Constituent is in liquid form {2}
321.5.~.~.~ Encapsulated liquid

DEFINITION

Classification: 428/321.5

Encapsulated liquid:

(under subclass 321.1) Subject matter wherein the liquid has been encapsulated in a solid material before incorporation

into the component in question.

(1) Note. A statement that the liquid is in the form of "microcapsules" is sufficient for placement of the patent in this subclass.

SEE OR SEARCH THIS CLASS, SUBCLASS:

313.3, for composite stock materials containing "empty" microcapsules.