Process for manufacturing a carbonaceous material
CA 1078774 A · Owner: Mitsui Coke Co. · Inventors: Fukuda, Kenji; Tatsumoto, Katsunobu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a process for manufacturing an isotropic carbonaceous material having a high density and a high crushing strength which comprises the steps of (a) extracting a reformed coal from at least one component selected from the group consisting of brown coal, lignite and grass peat in the presence of hydrogen gas; (b) heating the reformed coal to produce a green coke; and (c) coking the green coke.
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 June 3, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 3, 1997.
- 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.