Ultraviolet radiation absorbing agent for bonding to an ocular lens
January 22, 2010. 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 ReferencesUltraviolet absorbing lenses Method of selectively tinting soft contact lenses Tinted contact lenses and a method for their preparation Contact lenses having fluorescent colorants and apparatus for making such lenses Ultraviolet light absorbing compounds, compositions and methods for making same Ultraviolet absorbing lenses and method of making the same Tinted contact lens and method of tinting with reactive dye and quaternary ammonium salt Reactive uv absorbing compositions and method of preparing lenses therefrom Patent #: 4963160 InventorsAssigneeApplicationNo. 468386 filed on 01/22/1990US Classes:8/507, Contact lens8/549, Alkylene sulfato, halotriazine, halodiazine, haloquinoxaline, or halopyrimidine dye8/648, Fluorescent dye, e.g., stilbene, benzimidazole, benzoxazole, benzothiazole, pyrazoline dye, etc., optical brightner or bluing agent351/162, Colored544/180TriazinesExaminersPrimary: Clingman, A. LionelAttorney, Agent or FirmForeign Patent References
International ClassD06P 005/00AbstractAn ultraviolet radiation absorbing contact lens and method ofl making the same, comprising a copolymeric hydrogel material to which is covalently bonded at least one halotriazine reactive ultraviolet radiation absorbing agent of the formula: ##STR1## where X=Cl or F;E,A=an ultraviolet radiation absorbing component; andE1 =an aqueous soluble moiety.Field of SearchContact lens |
| ||||||||||||||
