Coating process
CA 2207740 C · Owner: Gouda, Ibrahim · Inventors: Gouda, Ibrahim; Larm, Olle
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for the coating of an intraocular lens to impart tissue compatibility thereto, comprising the steps: a) priming said lens using a solution of a polyamine; b) coating the lens treated in step a) above with a solution of a periodate-oxidized polysaccharide selected from heparin heparan , sulphate, and chondroitin sulphate to stabilize said polyamine by covalent and/or ionical cross-linking; c) coating the lens treated in step b) above with a solution of a polyamine; and d) coating the lens treated according to step c) above with a solution of a periodate-oxidized polysaccharide selected from heparin, heparan sulphate, and chondroitin sulphate in the presence of a …
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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 December 5, 1995 and granted August 12, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 5, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 5, 2017.
- 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.