Method for producing permanent magnets
CA 1075567 A · Owner: Bbc Brown Boveri And Company Limited · Inventors: Bachmann, Kurt; Julke, Elias
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of making permanent magnets from magnetic powders employs the steps of comminuting the magnetic material to a powder and mixing the powder with a suitable binder. The resultant mixture is placed in a mold where predetermined pressure and vibration are simultaneously applied under the influence of a magnetic field. Metals, thermoplastic or thermosetting materials may be used as binders. When using any of these materials, the binder should have a solidification or setting temperature which appropriately differs from the mold temperature. When a binder composed of a material which softens with increase in temperature above a predetermined temperature is used, the mold is held at a …
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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
- Granted April 15, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 15, 1997.
- 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.