US PATENT SUBCLASS 427 / 2.14
.~ Particulate or unit-dosage-article base (e.g., tablet, pill, pellet, capsule, liposome, powder, controlled-release implant, suppository; excluding transdermal patch)

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

2.1  DF  MEDICAL OR DENTAL PURPOSE PRODUCT; PARTS; SUBCOMBINATIONS; INTERMEDIATES (E.G., BALLOON CATHETER, SPLINT) {7}
2.14.~ Particulate or unit-dosage-article base (e.g., tablet, pill, pellet, capsule, liposome, powder, controlled-release implant, suppository; excluding transdermal patch) {5}
2.15  DF  .~.~> Fluidized bed utilized {2}
2.18  DF  .~.~> En masse rotating means employed (e.g., rotating pan, tumbling) {2}
2.21  DF  .~.~> Retarded or controlled-release layer produced (e.g., enteric)
2.22  DF  .~.~> Gelatin matrix layer produced
2.23  DF  .~.~> Significant color or other intended appearance altering layer formed (e.g., shining, indicia)

DEFINITION

Classification: 427/2.14

Particulate or unit-dosage-article base (e.g., tablet, pill, pellet, capsule, liposome, powder, controlled-release implant, suppository; excluding transdermal patch):

(under subclass 2.1) Processes in which the coating is applied to a base which is a particulate or a unit-dosage-article and such that the coated product has a particulate or unit-dosage physical form; excluding transdermal patch.

(1) Note. A unit-dosage-article is one which is provided as one or a few discrete, readily and independently handleable piece or pieces for the intended medical or dental use. Any of the following terms are prima facie indicative of a unit-dosage-article: tablet, capsule, dragee, pill, bead.

(2) Note. A particulate is a small solid bit of matter which typically can be poured like a fluid when handled. Any of the following terms are prima facie indicative of a particulate: liposome, powder, microcapsule, granule, pellet, bead, flake, platelet, particle, grain, microsphere, granulate.

(3) Note. Clathrates and intercalates (inclusion compounds) are not proper for placement here. Clathrates and intercalates (inclusion compounds), per se, are classified hierarchically and subject to the limitations set forth in the compound (element) classes based both on the encapsulant and encapsulate. See the main definition for Class 427, section II, LINES WITH OTHER CLASSES, the subsection entitled CLATHRATES AND INTERCALATES, for examples.

(4) Note. Skin patches or transdermal patches are not considered unit-dosage-articles; see subclass 2.31.

SEE OR SEARCH THIS CLASS, SUBCLASS:

212+, for coating or encapsulating of solid granules, pellets, beads, flakes, platelets, or other particles en masse; especially, subclasses 213.3+ for such processes using an emulsion or dispersion to form a solid-walled microcapsule on a solid, such as a liposome; when other than a medical or dental product is produced. SEE OR SEARCH CLASS

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

4.1+, for processes using an emulsion or dispersion to form a solid-walled microcapsule around a liquid, such as forming a liquid-core liposome.

424, Drug, Bio-Affecting and Body Treating Compositions, for class defined compositions, the nominal processes of making, and the nominal processes of using; see

1.21, for radionuclide containing liposome; subclass 1.29 for radionuclide containing coated or impregnated particulate; and subclasses 400+ for preparations characterized by special form such as coated (notably, subclass 408 for biocide, repellant, or attractant in the form of a capsule, pellet, or tablet; subclass 417 for biocide, repellant, or attractant in the form of a coated particulate such as a liposome; subclasses 422+ for implant or insert such as surgical or suppository; subclasses 439+ for food as carrier for pharmaceutical such as candy coated; subclass 450 for liposome form; subclasses 451+ for capsule; subclasses 464+ for tablet, lozenge, or pill such as coated, printed, or sustained or differential release type; and subclasses 489+ for particulate form such as coated powder, granule, bead, microcapsule, or pellet).

426, Food or Edible Material: Processes, Compositions, and Products,

89+, for coated food products and subclasses 302+ for processes of surface coating of a solid food with a liquid.

428, Stock Material or Miscellaneous Articles,

402+, for coated grain, granule, or small bit of matter, such as microcapsule, liposome, or powder. See (1) Note in Class 428, subclass 402 for rules of placement.