Tissue-equivalent membrane from bovine esophageal tissue
CA 2120385 A1 · Owner: Letona, Cesar A. · Inventors: Alvarado, Arturo; Letona, Cesar A.; Alvarado, Carlos A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A ready to use heterograft membrane for replacement of injured skin which is prepared by extraction of a mucous membrane from an esophagus of bovine origin. The tissue-equivalent membrane resulting from this process is applied on burns cuts or wounds to, protect the affected area and generally provide an optimum condition for the proliferation of epidermal cells. The membrane has an affinity with tissue cells and integrates to the living tissue. Afterwards, it falls off, leaving the wound area prepared for homografting, or when the epidermis has completely regenerated.
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 March 31, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 31, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 31, 2016.
- 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.