Process for treating coal and products produced thereby
CA 1078610 A · Owner: Polygulf Associates (A Partnership) · Inventors: Horowitz, Carl; Dichter, Michael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Novel modified coal products which are more easily, liquefied as compared to natural coal are produced by, a process comprising activating coal with free radical or ionic catalyst systems and thereafter reacting the, activated coal with vinyl monomers to attach polymeric side chains to the 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 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.