Method of controlling self-ignition of low rank coal
CA 1330488 C · Owner: Rogers, Edward S. · Inventors: Herbstrith, Mark A.; Rogers, Edward S.; Reidies, Arno H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of controlling self-ignition of low rank coal in dried particulate form in which there is applied to the coal in aqueous solution a water-soluble permanganate salt and a phosphorus compound consisting of phosphoric and polyphosphoric acids and their water-soluble salts.
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 5, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 5, 2011.
- 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.