Tinted contact lenses with combined limbal ring and iris patterns
CA 2576451 C · Owner: Bowers, Jack W. · Inventors: Mccarthy, Karin D.; Dukes, Jerry W.; Bowers, Jack W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides tinted contact lenses that include a limbal ring that serves to enhance the definition of the wearer's iris resulting in the iris appearing larger to viewer's of the lens wearer. The lens also incorporates a plurality of tapered spokes that overlie a portion or all of the of the wearer's iris. The lenses of the invention may be used as cosmetic lenses for enhancing or altering an individual's iris.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed August 18, 2005 and granted August 4, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 18, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.