Agglomerating particulate ore materials using polymeric binders
CA 2416662 A1 · Owner: Schmitt, James John · Inventors: Schmitt, James John; Steeghs, Henricus Renier Gerardus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Methods for agglomerating particulate material especially iron ore and iron , ore which is difficult or impossible to bind using known binders and techniques, by rendering the surface of the material negative by chelating , interfering elements in or on the material to permit effective performance of the binder, or by using a binding effective amount of a polymeric binder such as guar, starch, polyacrylates cellulose lignin and like materials, sodium , carbonate sodium citrate, and, optionally, caustic.
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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 July 20, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 20, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 20, 2023.
- 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.