US PATENT SUBCLASS 427 / 213.31
.~.~ With post-treatment of encapsulant or encapsulating material (e.g., further coating, hardening, etc.)

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.~.~ With post-treatment of encapsulant or encapsulating material (e.g., further coating, hardening, etc.) {1}
213.32  DF  .~.~.~> Hardening {1}

DEFINITION

Classification: 427/213.31

With post-treatment of encapsulant or encapsulating material, (e.g., further coating, hardening, etc.):

(under subclass 213.3) Subject matter wherein the solid-walled microcapsule is subjected to significant aftertreatment; e.g., contacting microspheres with a solvent to extract material from their surfaces, etc.

(1) Note. The application of well known techniques for recovering, separating or isolating materials, e.g., filtering sieving, centrifuging, drying, precipitating, spray-drying, drum drying, freeze-drying, evaporating are not significant unless accompanied by process limitations, e.g., distillation performed at 650 mm Hg., sieving conducted with specified mesh size, etc.