Composite biosynthetic graft
CA 2045222 A1 · Owner: Weldon, Norman R. · Inventors: Weldon, Norman R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composite vascular graft including an outer synthetic component positioned over an inner biological component. The biological component is formed by generally shaping extracellular matrix derived by the, processing of naturally-occurring tissue into a general, cylindrical shape having a lumen therethrough. The outer synthetic component is formed by layering non-interwoven strands of synthetic material. The general compliance of the graft may be varied including by varying the layering of the non-interwoven strands and the material from which the strands are made. As implanted, bodily fluides may pass smoothly through the lumen.
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 June 21, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 21, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 21, 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.