Occlusive wound dressing and applicator
CA 2123003 A1 · Owner: Bioderm, Inc. · Inventors: Kay, Dennis M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A thin film wound dressing that is particularly easy to position accurately and apply smoothly to form an occlusive seal comprises three layers: a first wound covering layer (21) being permeable to gases and water vapor while being impermeable to microbes and liquids; a second adhesive layer (23) intimately disposed on the first layer for use in occlusively attaching the invention to skin or wound surfaces; and a third release backing layer (27) disposed on the second adhesive layer. The release backing layer has a functionally contiguous or integral pull-tab (25) attached in a manner that creates a substantially U-shaped release backing/pull-tab assembly. The release backing (27) and …
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 6, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 6, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 6, 2014.
- 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.