Antimicrobial ophthalmic solutions containing dodecyl-dimethyl-(2-phenoxyethyl)-ammonium bromide and methods of using the same
CA 1332556 C · Owner: Winterton, Lynn C. · Inventors: Winterton, Lynn C.; Heyl, Barbara L.; Tsao, Fu-Pao
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to the use of dodecyl-dimethyl- (2-phenoxyethyl)-ammonium bromide as an antimicrobial agent to be a preservative for ophthalmic drug solutions in disinfecting, solutions, as well as in preservatives for aqueous ocular solutions for contact lenses. Dodecyl-dimethyl-(2-phenoxyethyl)ammonium bromide can also be employed as a component in a preserved cleaner for contact lenses, as a component of a conditioning solution for contact lenses as well as in an ophthalmic drug solution.
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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
- Granted October 18, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 18, 2011.
- 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.