Manufacturing soft magnetic components using a ferrous powder and a lubricant
CA 2446040 A1 · Owner: Pelletier, Sylvain · Inventors: Thomas, Yannig; Pelletier, Sylvain; Lefebvre, Louis-Phillippe
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Near-net-shape soft magnetic components can be produced from iron powderlubricant compositions using powder metallurgy techniques. The resulting components have isotropic magnetic and thermal properties and may be shaped into complex geometry using conventional compaction techniques. A non-coated ferromagnetic powder is mixed with a lubricant and compacted. After compaction, the components are thermally treated at a moderate temperature to burn out the lubricant, and possibly also relieve the stresses induced during pressing and reduce the hysteresis losses. Depending on the application the , properties of the material may be tailored by varying the content and type of the lubricant …
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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 May 2, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 2, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 2, 2024.
- 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.