Expired Canadian patentCanada
Coal liquefaction process
CA 1210724 A · Owner: International Coal Refining Company (A Partnership) · Inventors: Tao, John C.; Znaimer, Samuel; Skinner, Ronald W.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to an improved process for the production of liquid carbonaceous fuels and solvents from carbonaceous solid fuels especially, 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 September 2, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 2, 2003.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 26, 1984
GrantedSeptember 2, 1986
Term endedSeptember 2, 2003
Patent numberCA 1210724 A
Classification (IPC)C10G1/06 +1 more
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.