Desulfurizing iron
CA 1295485 C · Owner: Stelco Inc. · Inventors: Murphy, Lorne E.; Cameron, Ian A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The efficiency of the use of desulfurizing agents particularly calcium carbide- and calcium oxide-based desulfurizing agents, to decrease the sulfur content of molten iron is improved by adding a pulse of magnesium aluminum or calcium metal at a critical concentration of sulfur and oxygen in the molten metal. The improved efficiency enables less desulfurization agent to be employed for the same residual sulfur concentration with consequently decreased reaction time and costs.
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 February 11, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 11, 2009.
- 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.