Novel vented wound dressing
CA 2033654 C · Owner: Kendall Company (The) · Inventors: Gilman, Thomas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A wound dressing comprising a base sheet having an opening for placement over the wound; a vent sheet providing controlled leakage of fluid along a path from the wound through the opening of the base sheet; and a chamber containing a fabric reservoir for receiving and retaining the wound fluid the walls defining the chamber being constructed so as to provide a complete barrier to bacteria and other external contaminants while at the same time permitting egress of air from the voids or interstices of the fabric reservoir so as to, optimize the wicking and amount of wound fluid which can be retained in the volume provided by the fabric reservoir.
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 January 4, 1991 and granted December 25, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 4, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 4, 2013.
- 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.