Composite wire with a base of cerium and other rare earths
CA 1052061 A · Owner: L'Air Liquide, Societe Anonyme Pour L'Etude Et L'Exploitation Des Proced Es Georges Claude · Inventors: Dauvergne, Michel; Karinthi, Pierre; Hirschauer, Benoit
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a composite wire with a base of cerium and/or rare earths such as mischmetal and intended for insertion into a bath of molten steel so as to de-oxidize and de-sulphurize the steel. When this composite wire is inserted into molten steel, it controls certain inclusions by converting manganese sulphides to sulphides of rare earths thereby, improving the resilience characteristics of the steel. The composite wire is obtained by enclosing the mischmetal wire in a metallic sheath. The diameter of the wire the thickness of, the sheath and the speed of injection are determined in accordance with characteristic curves representing particular proportional relations.
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 April 10, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 10, 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.