Infection-resistant polyurethane foams, method for producing the same and use thereof in antiseptic wound dressings
CA 2591072 C · Owner: Bayer Innovation Gmbh · Inventors: Fugmann, Burkhard; Dietze, Melita
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention describes microbicidal hydrophilic polyurethane foams endowed with , polyhexamethylenebiguanide (PHMB) and/or its hydrochloride and also a superabsorbent, wound , contact materials obtainable therefrom and processes for producing the therapeutically endowed , polyurethane foams and the wound contact materials obtainable therefrom.
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 13, 2005 and granted April 9, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 13, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.