Hydrophobic polyurethane foam as backing material for bandages
CA 2433829 A1 · Owner: Wibaux, Anne · Inventors: Haddock, Teresa; Wibaux, Anne
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The use of hydrophobic polyurethane foam as a backing material for bandages and, bandages made with hydrophobic polyurethane foam backings are described. The hydrophobic polyurethane foam has a thickness of from about 0.1 mm to about 0.7, mm. The bandages are flexible, waterproof and breathable.
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 June 25, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 25, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 25, 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.
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.