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Expired Canadian patentCanada

(5nickel-copper-molybdenum methanation catalyst and process

CA 1064461 A · Owner: Harshaw Chemical Company (The) · Inventors: Cullo, Leonard A.; Alcorn, William R.

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Abstract From the Canadian patent

A supported methanation catalyst and a process for utilizing the catalyst are disclosed. The catalyst yields a product containing a major proportion of methane and some ethane. Methanation of a gaseous feed stream containing from about 10 to about 50 mole percent carbon monoxide and, from about 1.0 to about 3.0 times as much hydrogen as carbon monoxide, is effected at elevated temperature and high pressure continuously over a prolonged period of time while, a conversion of carbon monoxide in excess of 80 mole percent is maintained. Thermal stability at elevated temperature and pressure permits essentially continuous use of the catalyst for extended periods of time without time-consuming …

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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 16, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 16, 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.
Filed—
GrantedOctober 16, 1979
Term endedOctober 16, 1996
Patent numberCA 1064461 A
Classification (IPC)B01J23/84 +2 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedOct 16, 1979Term endedOct 16, 1996

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.