Method for forming ophthalmic lenses using reusable molds
CA 2509258 A1 · Owner: Hofmann, Gregory J. · Inventors: Hofmann, Gregory J.; Wildsmith, Christopher; Lust, Victor
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for manufacturing ophthalmic lenses using reusable thermoplastic molds is provided. The invention permits the production of a full prescriptive range of lenses while reducing the number of mold inserts required. Further the method of the invention may be used in a method for the delivery of customize ophthalmic lenses to a lens wearer.
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 November 10, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 10, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 10, 2025.
- 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.