Metal powder production by direct reduction in an arc heater
CA 1057508 A · Owner: Westinghouse Electric Corporation · Inventors: Dancy, Edna A.; Fey, Maurice G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for the production of metal powder from an ore by direct reduction in an arc heater characterized by the steps of introducing a finely divided ore into a plasma arc to effect direct reduction of the ore to small solid particles of elemental metal in a reducing atmosphere and quenching the metal particles to form solid metal powder the metal having a melting point greater than the temperature of the chemical reduction reaction, such metal being for, example, molybdenum, tungsten, tantalum or niobium.
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
- Granted July 3, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 3, 1996.
- 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.