Method and device for preparing a fluid hydrocarbon product from coal
CA 1195942 A · Owner: Nederlandse Centrale Organisatie Voor Toegepast-Natuurwetenschappelijk O Nderzoek · Inventors: Den Otter, Johan L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A b s t r a c t. Coal is continuously fed into an extruder and reacts therein at elevated pressure and temperature and possibly in the presence of a catalyst with hydrogen and/or hydrogen containing compounds added to the contents of the extruder on at least one spot situated at a distance of at least three times the inner diameter of the extruder in front of the end of the screw. From the reaction product leaving the extruder hydrocarbons which are fluid under normal conditions are separated. Part of these hydrocarbons which are liquid under normal conditions may be recycled to the extruder.
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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 29, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 29, 2002.
- 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
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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.