Process for hydrating soft contact lenses
CA 2238144 C · Owner: Johnson & Johnson Vision Care, Inc. · Inventors: Kindt-Larsen, Ture
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of transferring a contact lens between processing stations and comprising aligning a lens holding means containing a contact lens with a convex carrier element so that a concave surface of the lens is oriented towards a convex surface of the carrier element. The contact lens is released from the lens holding means and attached to the convex surface of the first carrier elements. The contact lens is then transferred to a subsequent processing station.
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 April 15, 1991 and granted June 17, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 15, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 15, 2013.
- 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.