Fetal membrane tubes for nerve and vessel grafts
CA 2124190 A1 · Owner: Research Development Foundation · Inventors: Shenaq, Saleh M.; Gray, Kathy Jo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed are cylinders having a wall formed of at least one layer of sterilized cross-linked Types I II, III collagen or, combinations thereof from placenta for nerve and blood vessel grafts methods of manufacture and use. The nerve grafts promote axon regeneration therethrough. The nerve and blood vessel grafts are non-immunogenic, can be constructed into tubes of various lengths and diameters, are easily accessible and are patent or open in use.
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 25, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 25, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 25, 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.