Shape memory alloy articles with improved fatigue performance and methods therefor
CA 2669824 C · Owner: Gore Enterprise Holdings, Inc. · Inventors: Dooley, Bret A.; Mitchell, Michael R.; Tittelbaugh, Eric M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Articles made of shape memory alloys having improved fatigue performance and to methods of treating articles formed from those materials by pre-straining the articles (or desired portions) in a controlled manner so that the resultant articles exhibit improved fatigue performance. The shape memory articles are preferably medical devices more preferably implantable medical devices. They are most preferably devices of nitinol shape memory alloy that is superelastic at normal body temperature. The pre-straining method of the present invention includes the controlled introduction of non-recoverable tensile strains greater than about 0.20% at die surface of a desired portion of a shape memory …
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 April 29, 2004 and granted January 15, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 29, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 29, 2026.
- 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.