Production of hardened coal agglomerates
CA 1285388 C · Owner: Broken Hill Proprietary Company Limited (The) · Inventors: Rigby, Geoffrey Raymond
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system for the production of hardened coal agglomerates comprising a first pump for pumping a coal-water slurry and a predetermined quantity of oil or other suitable hydrophobic liquid into an agitated mixing tank, a second pump for pumping the coal-water slurry and partially formed agglomerates from the first mixing tank into a pipeline loop which returns the slurry/agglomerates to the tank, a third pump for removing slurry/agglomerates from the first mixing tank and transporting it to a second mixing tank means for introducing, further fresh coal-water slurry into the inlet of the third pump and/or into the second mixing tank a fourth pump for, withdrawing the slurry/agglomerates from …
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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
- Granted July 2, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 2, 2008.
- 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.