Device for contact lens care
CA 2344683 A1 · Owner: Coronis Gmbh · Inventors: Muller-Lierheim, Wolfgang G. K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a device for the care of contact lenses comprising a , container (1), an aqueous 3 % H2O2 solution that may be introduced in the container (1) and a catalyst consisting of a platinum layer to neutralize the H2O2 solution, the surface thereof being in contact with the aqueous H2O2 solution, wherein a silver layer (7) contacts the H2O2 solution with the purpose of improving the oligodynamic effect of the care solution the surface , of said layer having a maximum size of 3.0 mm2/ml.
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 17, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 17, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 17, 2021.
- 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.