.~> Liquid encapsulation utilizing an emulsion or dispersion to form a solid-walled microcapsule (includes liposome) {4}
DEFINITION
Classification: 264/4
(under the class definition) Processes wherein a material which is normally liquid at ambient temperature and pressure is encapsulated, i.e., packaged or contained, in shaped discrete receptacles e.g., microspheres.
(1) Note. The classification of a patent reciting the encapsulation of a core material with no reference to the core being a solid or liquid, the assumption is made that the core is solid and therefore classified in Class 427, subclasses 213.3+ as an original with a suggested cross to this class, subclass.
(2) Note. This class, subclass 4.1 provides for processes of producing a composition by way of encapsulating (shaping operation) a liquid core where elsewhere not provided for. The liquid core may be homogeneous or heterogeneous.
(3) Note. A patent reciting a coated or encapsulated material with claimed utility(ies) is classified with the composition classes. A similar patent with (a) multiply disclosed utilities or (b) undisclosed utility is classified in Class 428, subclasses 402+. However, in the latter two cases (a) and (b) above, when the coating or encapsulating material stabilizes a compound against physical or chemical
degradation, then classification is appropriate for and subject to the limitations set forth in one of the compound (element) classes. The order of superiority of the composition classes are listed below under "SEARCH CLASS". Those classes with an asterisk are not composition classes but deemed appropriate for further search.
(4) Note. 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 264, section II, LINES WITH OTHER CLASSES AND WITHIN THIS CLASS, subsection K, CLATHRATES AND INTERCALATES, for examples.
SEE OR SEARCH CLASS 8, Bleaching and Dyeing; Fluid Treatment and Chemical Modification of Textiles and Fibers,
526, for a dye in specified form other than mere powder.
29, Metal Working,
422, for processes of shaping a container end to encapsulate material.*
53, Package Making, appropriate subclasses for encapsulating processes employing a preformed planar sheet or a tube in package making.*
75, Specialized Metallurgical Processes, Compositions for Use Therein, Consolidated Metal Powder Compositions, and Loose Metal Particulate Mixtures.
106, Compositions: Coating or Plastic for a filler or pigment for a coating composition which may include size or structure of the constituent particles or fibers which recitation does not serve to exclude from Class 106. See especially
21, (invisible inks), 36, 235, 241, 251, 253+, 266, 272, 275, 276, 280, 281+, 400+, 400+, 636, 734, and 816 (coated material) in Class 106. See also V, above in definition.
118, Coating Apparatus,
303, for apparatus for spray coating particulate material.*
148, Metal Treatment,
22+, for composition and 31.5 for a coated stock material. 149, Explosive and Thermic Compositions or Charges,
3+, for a coated component.
156, Adhesive Bonding and Miscellaneous Chemical Manufacture,
81, for melting of a solid material in an airtight cavity and subclasses 145+ for encapsulating, when combined with a laminating step.
204, Chemistry: Electrical and Wave Energy.
208, Mineral Oils: Processes and Products.
252, Compositions, for miscellaneous compositions having special uses or functions.
260, Chemistry of Carbon Compounds,
709+,.
420, Alloys or Metallic Compositions.
424, Drug, Bio-Affecting and Body Treating Composition, 16+, for coated, impregnated or layered feature.
425, Plastic Article or Earthware Shaping or Treating: Apparatus,
5, for apparatus encapsulating normally liquid material in discrete, simultaneously formed containers.*
426, Food or Edible Material: Processes, Composition, and Products,
89+,.
427, Coating Processes,
213.3+, for processes of encapsulating solid core materials.*
428, Stock Materials or Miscellaneous Articles,
320.6, and subclass 321.5 for composite (e.g., layered, etc.) stock material involving a microencapsulated liquid and subclasses 402.2+ for coated particles or microscopic size. *Not a composition class.
429, Chemistry: Electrical Current Producing Apparatus, Product and Process.
430, Radiation Imagery Chemistry: Process, Composition, or Product Thereof,
138, for a microcapsule. 451, Abrading, especially
295, for impregnating or coating an abrasive tool.
501, Compositions, Ceramic.
502, Catalyst, Solid Sorbent, or Support Therefor: Product or Process of Making,
60+, and 527.11-527.24.
504, Plant Protecting and Regulating Compositions.
520, Synthetic Resins or Natural Resins, see, for example, Class 523,
161, invisible ink composition and subclasses 200+ for a composition containing product in the form of surface-coating, impregnated, encapsulated, or surface-modified material.
585, Chemistry of Hydrocarbon Compounds (mixture subclasses).
588, Hazardous or Toxic Waste Destruction or Containment,
249+, for containment broadly of hazardous or toxic waste.
