Method of producing soft magnetic steel materials
CA 2019187 A1 · Owner: Sanpei, Tetsuya · Inventors: Omori, Toshimichi; Kunisada, Yasunobu; Takano, Toshio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention is concerned with a method of producing economically soft magnetic ferrous materials with high magnetic permeability. A cast piece or a steel piece where sol.Al, is added 0.5 to 2.0 wt% to pure iron - composition and Ti is added 0.005 to 1.0 wt% as required, is hot worked as specified temperatures and at specified work finishing temperatures and finally annealed 900 to 1300°C, preferably 1000 to 1300°C thereby to obtain soft magnetic materials having coercive force of lower than 0.4 Oe and magnetic flux density of more than 10000 G at the magnetic field of 0.5 Oe.
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 18, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 18, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 18, 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.