Electro-optic ophthalmic lens
CA 2568419 C · Owner: Chaput, Frederic · Inventors: Meyer, Andreas F.; Chaput, Frederic; Cano, Jean-Paul
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to an ophthalmic lens comprising a transparent substrate (3) and electro-optic means (5) which are integrated into the substrate in order to provide an optical function in response to an electric stimulus. The inventive ophthalmic lens also comprises at least one photovoltaic cell (6) which is integrated into the substrate in order to supply the electro-optic means in response to an incident light and optionally, a circuit for controlling the electric voltage. The photovoltaic cell (6) can be incorporated in an opaque element which occupies a small part of the surface of the lens. Alternatively the photovoltaic cell (6) can be transparent and cover the surface of the …
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 June 7, 2005 and granted August 5, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 7, 2025.
- 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.