Iron-based magnetic shape memory alloy and method of preparing the same
CA 2325474 A1 · Owner: Watanabe, Tadao · Inventors: Aiba, Mituru; Furuya, Yasubumi; Watanabe, Tadao
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A magnetic shape memory alloy which can undergo very large magnetostriction is prepared by causing magnet-induced martensitic phase transformation through applying an external magnetic energy to an iron-based magnetic shape memory alloy, such as an iron-palladium based alloy containing palladium in an amount of 27 to 32 atomic % and an iron-platinum based alloy containing platinum in an amount of 23 to 30 atomic %, which is characterized in that it exhibits high crystal anisotropy and has a low energy grain boundary formed around it and thus martensitic twinning phase transformation is induced by a magnetic field.
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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 24, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 24, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 24, 2021.
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Timeline
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.