Wound dressing and method for manufacturing the same
CA 2539945 C · Owner: Bsn Medical Holding Gmbh · Inventors: Elefsen, Thordur M.; Sigurjonsson, Gudmundur Fertram; Gudnason, Palmar I.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A wound dressing (20) is provided that includes skin facing areas having different degrees of skin adherence. The dressing (20) comprises a backing layer that defines a center portion (32) and a border portion (34) surrounding the center portion (32). A carrier layer (26) is secured to the border portion (34) of the backing layer (22) within the border portion (34) and includes a first skin adherent facing layer (28). An absorbent core (24) is connected to a surface of the backing layer (22) within the center portion (34) and a second skin adherent facing layer (36) is disposed along a surface of the absorbent core (24). The first facing layer (28) has greater skin adhesive …
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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 25, 2004 and granted April 21, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 25, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 25, 2026.
- 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.