Carbohydrate composition and method for cleaning and disinfecting contact lenses
CA 2178195 C · Owner: Panicucci, Rick · Inventors: Groemminger, Suzanne F.; Panicucci, Rick
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cleaning solution for contact lenses is described that includes a carbohydrate that is a mono- or disaccharide its alcohols or partially, hydrolyzed esters or mixtures thereof. Preferred carbohydrates are sorbitol glucose, maltose, sucrose, dulcitol, dextran dextrin, mannitol, maltitol, or mannose preferably in an amount of 0.001 to 10 % by weight of an aqueous solution for cleaning the contact lenses. A preferred composition for cleaning contact lenses comprises sorbitol in an amount of about 0.1 to 11 % by weight in an aqueous solution. A method for cleaning contact lenses with said carbohydrate cleaning solution is described and may be combined for simultaneously cleaning and, …
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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
- Filed December 28, 1994 and granted May 23, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 28, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 28, 2016.
- 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.