Multi-layered dressing
CA 2030593 C · Owner: Lucast, Donald H. · Inventors: Lucast, Donald H.; Heinecke, Steven B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A highly moisture vapor transmissive adhesive composite is disclosed comprising at least three layers a, polymeric backing layer, a high moisture vapor transmission layer, and a skin contacting adhesive layer. The high moisture vapor transmission layer may be made from a polymeric backing material, an adhesive material or both.
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 November 23, 1990 and granted March 26, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 23, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 23, 2012.
- 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.