Heart valve structure
CA 1105652 A · Owner: Macgregor, David C. · Inventors: Macgregor, David C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A novel heart valve structure includes metal elements having a porous coating on a coherent substrate. Tissue forms a smooth thin adherent coating of self-determining thickness on the porous coating making it resistant to the formation of the blood clots normally associated with the presence of foreign bodies in the blood stream. -1-
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
- Granted July 28, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 28, 1998.
- 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.