Colored lens
CA 2013218 C · Owner: Rawlings, David L. · Inventors: Moore, Alix Ann; Bao, Qi-Bin; Rawlings, David L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A molded plastic cosmetic contact lens made in a repetitive manner comprising a cosmetic pattern of clustered networks of interconnected thin colored lines radiating from and about the periphery of the pupil portion in a direction inclined, towards and in contact with the periphery of the iris portion and residing within the, iris portion. The lens can be made by molding in a manner that the cosmetic pattern, becomes part of the body of the lens. A process for the manufacture of a molded contact lens containing a transparent central visual region circumscribed by a colored iris portion which, comprises, a. coating a colored liquid which is either curable or thermoplastic in a mold …
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 March 28, 1990 and granted March 21, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 28, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 28, 2012.
- 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.