Synthetic caking coal and method for production thereof
CA 1051663 A · Owner: Nissho-Iwai Co. · Inventors: Aoki, Yutaka; Ito, Jiro; Hase, Akira
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to synthetic caking coal obtained by hydrogenating weak caking or non-caking coal and then subjecting the thus treated coal to heat polymerization preferably in a non-oxidizing atmosphere, and also relates to a method for production of such synthetic caking coal.
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 April 3, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 3, 1996.
- 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.