Canadian application, no grantCanada
Contact lens care compositions, methods of use and preparation which protect ocular tissue membrane integrity
CA 2511550 A1 · Owner: Huth, Stan · Inventors: Huth, Stan
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A multi-purpose contact lens care solution comprising taurine a liquid , aqueous medium, an antimicrobial component a surfactant and a buffer. This , solution prevents losses in ocular tissue membrane integrity during contact lens wear.
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 23, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 23, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 23, 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.
FiledDecember 23, 2003
GrantedNo grant recorded
Term endedDecember 23, 2023
Patent numberCA 2511550 A1
Classification (IPC)C11D3/00 +2 more
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.