Magnetic alloy with ultrafine crystal grains and method of producing same
CA 2030446 C · Owner: Yoshizawa, Yoshihito · Inventors: Bizen, Yoshio; Yamauchi, Kiyotaka; Yoshizawa, Yoshihito
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a magnetic alloy with ultrafine crystal grains having a composition represented by the general formula:, Fe100-x-y M x B y (atomic %) wherein M represents at least one element selected from Ti Zr, Hf, V, Nb, Mo, Ta, Cr, W and Mn, 4 ~ x ~ 15 2 ~ y ~ 25, and 7 ~ x + y ~ 35, at least 50% of the alloy structure being composed of crystal grains having an average grain size of 500.ANG. or less, and the crystal grains being based on a bcc structure. It may further contain X (Si Ge, P, Ga, etc.), and/or T (Au, Co, Ni etc.). This magnetic alloy has an, excellent saturation magnetic flux density permeability and, heat resistance.
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 21, 1990 and granted January 23, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 21, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 21, 2012.
- 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.