US PATENT SUBCLASS 424 / 490
.~.~ Coated (e.g., microcapsules)

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


424 /   HD   DRUG, BIO-AFFECTING AND BODY TREATING COMPOSITIONS

400  DF  PREPARATIONS CHARACTERIZED BY SPECIAL PHYSICAL FORM {12}
489  DF  .~ Particulate form (e.g., powders, granules, beads, microcapsules, and pellets) {5}
490.~.~ Coated (e.g., microcapsules) {5}
491  DF  .~.~.~> Containing proteins and derivatives {1}
493  DF  .~.~.~> Containing polysaccharides (e.g., sugars) {1}
496  DF  .~.~.~> Containing natural gums/resins
497  DF  .~.~.~> Containing solid synthetic polymers
498  DF  .~.~.~> Containing waxes, higher fatty acids, higher fatty alcohols, or derivatives thereof

DEFINITION

Classification: 424/490

Coated (e.g., microcapsules):

(under subclass 489) Subject matter in which the particle is coated.

SEE OR SEARCH CLASS

264, Plastic and Nonmetallic Article Shaping or Treating: Processes,

4.1, 4.7 for processes of encapsulation of a material which is liquid involving the formation of microspheres.

427, Coating Processes,

213.3+, for processes of forming a microcapsule or the processes of solid encapsulation utilizing an emulsion or dispersion to form a solid walled microcapsule.

428, Stock Material or Miscellaneous Articles, 402, and indented subclasses 402.2+ for patents to coated or encapsulated products of general utility which recite a term; e.g., encapsulation, microencapsulation, sphere, microsphere, capsule microcapsule, etc., which give evidence for the product being a microcapsule. Subclass 402 provides an extensive listing to other classes providing for coated or impregnated articles or materials.