Alkaline earth carbonate desulfurizing agents
CA 1104828 A · Owner: Skw Frostberg Aktiengesellschaft · Inventors: Freissmuth, Alfred; Gmoehling, Werner; Roeck, Heinrich
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Fine grain desulfurizing mixtures for iron based melts comprise alkaline earth carbons and a reducing metal. The metal combines with evolved CO2 exothermically, and the oxide formed in situ reacts with the melt to desulfurize it. Gas evolution is suppressed by the action of the metal. metal may be chosen to provide additional alkaline earth oxides for desulfurizing. The metal may also be chosen to increase the fluidity of the alag formed on the melt.
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 14, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 14, 1998.
- 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.