Formulations for treating slow and non-healing wounds
CA 2004802 A1 · Owner: Bentley, Christopher R. · Inventors: Bentley, Christopher R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to a chitinaceous wound dressing for the treatment of wounds, particularly nonhealing or slow-healing wounds, comprising chitin substantially free of protein. Preferably the wound, dressings of this invention are powders of 50 mesh size or less and may be used for treating wounds in mammals by applying them directly to a wound surface to be treated. The wound dressings may be applied in amounts of about 0.01 to about 0.1 g/cm2 of the wound surface to be treated. Methods for purifying the chitin wound dressings are also contemplated and include the steps of placing crude chitin containing material into an acid bath; then placing the chitin material into a heated …
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 December 6, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 6, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 6, 2011.
- 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.