Production of metallurgical coke from oxidized caking coal
CA 1111366 A · Owner: Ignasiak, Boleslaw · Inventors: Ignasiak, Boleslaw
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
PRODUCTION OF METALLURGICAL COKE FROM OXIDIZED CAKING COAL" ABSTRACT OF THE DISCLOSURE, A three step process is provided for producing high strength metallurgical coke from high volatile caking coals. Firstly the caking, coal is oxidized by heating the coal in an oxygen-containing atmosphere for a period of time. Secondly, the oxidized caking coal is blended with fresh or relatively non-oxidized caking coal. Thirdly the blend is, carbonized to yield metallurgical grade coke.
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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 October 27, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 27, 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.