US PATENT SUBCLASS 427 / 213.33
.~.~.~.~ Using crosslinking agent

Current as of: June, 1999
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427 /   HD   COATING PROCESSES

212  DF  PARTICLES, FLAKES, OR GRANULES COATED OR ENCAPSULATED {5}
213.3  DF  .~ Solid encapsulation process utilizing an emulsion or dispersion to form a solid-walled microcapsule (includes liposome) {4}
213.31  DF  .~.~ With post-treatment of encapsulant or encapsulating material (e.g., further coating, hardening, etc.) {1}
213.32  DF  .~.~.~ Hardening {1}
213.33.~.~.~.~ Using crosslinking agent

DEFINITION

Classification: 427/213.33

Using crosslinking agent:

(under subclass 213.32) Subject matter wherein a crosslinking agent is used to harden the final product, e.g., chemically crosslinking gelatin microcapsules with compounds such as formaldehyde, glutaraldenhyde, etc.