Contact lenses with improved centering and orienting
CA 2432422 C · Owner: Johnson & Johnson Vision Care, Inc. · Inventors: Jubin, Philippe
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides a rotationally stabilized contact lens that takes into account the natural shape of the lens wearer's cornea in the design of the base curve of the lens. The invention provides an effective method and lenses , incorporating that method for on-eye lens stabilisation that eliminates the need for increasing the lens' peripheral thickness to stabilise the lens resulting in a more comfortable lens on-eye. Additionally the invention , provides a flexible base curve design method that results in improved lens fit and centration.
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 12, 2001 and granted May 29, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 12, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 12, 2023.
- 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.