US PATENT SUBCLASS 523 / 106
.~.~.~ Contact lens making composition

Current as of: June, 1999
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523 /   HD   SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {1}
1  DF  .~ PROCESSES OF PREPARING A DESIRED OR INTENTIONAL COMPOSITION OF AT LEAST ONE NONREACTANT MATERIAL AND AT LEAST ONE SOLID POLYMER OR SPECIFIED INTERMEDIATE CONDENSATION PRODUCT, OR PRODUCT THEREOF {71}
105  DF  .~.~ Nonmedicated composition specifically intended for contact with living animal tissue or process of preparing; other than apparel {7}
106.~.~.~ Contact lens making composition {2}
107  DF  .~.~.~.~> Silicon-containing organic polymer
108  DF  .~.~.~.~> Polymer of a heterocyclic N-vinyl polymerizable compound

DEFINITION

Classification: 523/106

Contact lens making composition:

(under subclass 105) Subject matter wherein said composition relates to those used in making contact lenses, e.g., a composition containing hydroxyethyl methacrylate copolymers, etc.

(1) Note. This subclass provides for a contact lens composition containing its own preserving agent when it is clearly specified and restricted for that use.

SEE OR SEARCH CLASS

8, Bleaching and Dyeing; Fluid Treatment and Chemical Modification of Textiles and Fibers,

507, for the process of dyeing a contact lens or product thereof.

351, Optics: Eye Examining, Vision Testing and Correcting, appropriate subclasses for methods of and instruments for fitting contact lenses and structural features and adaptations for contact lenses, such as coloring a portion of the lens to absorb part of the visible spectrum;

160+, for eye contact lens. 422, Chemical Apparatus and Process Disinfecting, Deodorizing, Preserving, or Sterilizing,

1, 43 for generic processes of deodorizing, preserving, or sterilizing contact lenses or compositions thereof.

424, Drugs, Bio-Affecting and Body Treating Compositions,

429, for a contact lens with special physical form, e.g., one which is coated or impregnated, etc.; subclass 78.04 for compositions containing a bio-active polymer broadly claimed for (1) disinfecting, sterilizing or preserving a contact lens or (2) bio-active polymer in admixture with a polymer composition to be used in making a contact lens. Such a composition would usually be classified in Class 523 but, in most cases, said composition likewise reduces or eliminates eye injury or irritation to the contact lens wearer or (3) for topically treating the eye of a living animal.

510, Cleaning Compositions for Solid Surfaces, Auxiliary Compositions Therefor, or Processes of Preparing the Compositions,

112+, for compositions used for the mere cleaning of contact lenses.

514, Drug Bio-Affecting and Body Treating Compositions, appropriate subclasses for (1) a contact lens composition which contains a nonbioactive polymer admixed with a medicament or (2) a composition with or without a nonbioactive polymer used to sterilize a contact lens composition to reduce or eliminate any eye injury.

604, Surgery,

290, for a method of applying a body treating or removing material or subclasses 294+ for a method of application to the eye or eye socket.