Inherently antimicrobial quaternary amine hydrogel wound dressings
CA 2339823 A1 · Owner: Kimberly-Clark Worldwide, Inc. · Inventors: Rouns, Cameron G.; Perrault, James J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composition and method for treating a wound with an inherently antimicrobial dressing. The dressing is a hydrogel containing from about 15 to 95 percent and preferably from about 61 to 90 percent by weight of a cationic quaternary , amine acrylate polymer prepared by the polymerization of acryloyloxyethyl(or propyl)-trialkyl(or aryl)-substituted ammonium salts or acrylamidoethyl(or propyl)-trialkyl(or aryl)-substituted ammonium salts. The antimicrobial hydrogels are non-irritating to the wound absorb wound exudate, and, due to , the inherently antimicrobial properties enhance the sterile environment , around the wound. The hydrogels have sufficient adhesive properties that loose …
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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 August 30, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 30, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 30, 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.