Accommodating diffractive intraocular lens
CA 2618021 C · Owner: Portney, Valdemar · Inventors: Portney, Valdemar
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
One disclosed embodiment of an intraocular implant includes a lens body. The lens body comprises a diffractive optical surface (115) having diffractive properties which produce an interference pattern. The lens body is sized and shaped for placement in an anterior portion of a human eye. The lens body is sufficiently flexible to change the shape of the diffractive optical surface in response to ciliary muscle (60) action so that the interference pattern is modified.
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 7, 2006 and granted August 5, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 7, 2026.
- 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.