Flexible intraocular lens made of hydrophilic acrylic material
CA 2275325 A1 · Owner: Villain, Franck · Inventors: Villain, Franck; Ortuno, Angel; Leguay, Laure-Anne
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns novel flexible intraocular lenses made of an hydrophilic acrylic material and the method for preparing them. Said hydrophilic acrylic material which constitutes their optic part or even their , optic and haptic parts is a cross-linked copolymer of hydroxyethyl methacrylate (HEMA) and of ethyl methacrylate (EMA).
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 16, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 16, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 16, 2019.
- 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.