Polyethylene oxide coated intraocular lens
CA 2179061 A1 · Owner: Llanos, Gerard · Inventors: Hoffman, Allan S.; Patel, Anilbhai S.; Llanos, Gerard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An intraocular lens having improved biocompatibility is coated with polyethylene oxide through covalent bonding preferably using, a plasma-deposited amine layer. The lens is then sterilized with ethylene oxide and extracted with water.
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 December 14, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 14, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 14, 2016.
- 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.