Layered agglomerated iron ore pellets and balls
CA 2560085 C · Owner: Corem · Inventors: Paquet, Guy; Wilhelmy, Jean-Francois
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A layered iron ore ball has a core portion and a shell portion covering the core portion. The core portion contains a first iron-oxide concentrate and is internal fuel additive free. The shell portion contains a second iron-oxide concentrate and at least one internal fuel additive added to the second ironoxide concentrate. The layered iron ore balls reduce the induration energy costs and increase induration productivity while obtaining good quality fired pellets. Such pellets are used for reduction in the ironmaking process.
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
- Filed April 21, 2005 and granted July 8, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 21, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.