Hydrophilic lens tinting and coloring apparatus
Patent 4559897 Issued on December 24, 1985. Estimated Expiration Date: 
March 29, 2005. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
March 29, 2005. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3168100 3885522 InventorsApplicationNo. 06/718183 filed on 03/29/1985US Classes:118/406, Mask or stencil118/412, Plural pools118/415, Superposed pool118/505Work-attachedExaminersPrimary: Morgenstern, NormanAssistant: Plantz, Bernard F. Attorney, Agent or FirmInternational ClassesB29D 11/00 (20060101)B05C 5/00 (20060101) G02C 7/02 (20060101) Foreign Application Priority Data1982-11-11 AUAbstractApparatus for the coloring or tinting of one or more selected areas of a soft or flexible contact lens to precise measurements comprises a support means formed to closely match one of the surfaces of the lens and a mask means adapted to operatively associate with the support means to delineate said one or more selected areas by providing one or more peripheral zones of compression within the lens to prevent the migration of an applied coloring or tinting medium thereacross. In use the lens is positioned on the support means so that one of the surfaces thereof closely matches the support means, the mask means is arranged to provide one or more peripheral zones of compression delineating said one or more selected areas, and a coloring or tinting medium is applied to at least one selected area. | |
