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Expired Canadian patentCanada

Process and apparatus for the purification of crude gases with simultaneous production of synthesis gas and fuel gas

CA 1311357 C · Owner: Weiss, Horst · Inventors: Weiss, Horst; Ranke, Gerhard

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Abstract of the Disclosure In a process for the purification of coal gasification gases, synthesis gas and fuel gas are simultaneously produced. In order to obtain a fuel gas rich in CO2 capable of handling fluctuations in demand and to pro-, duce at the same time a highly concentrated H2S fluid fraction, a portion of the crude gas, scrubbed to synthesis gas purity, is utilized for stripping out CO2 under pressure from scrubbing medium loaded exclusively with CO2. The partially stripped CO2-loaded scrubbing medium is employed for the concentration of sulfur compounds in an H2S/COS-loaded scrubbing medium.

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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 December 15, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 15, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 10, 1988
GrantedDecember 15, 1992
Term endedDecember 15, 2009
Patent numberCA 1311357 C
Classification (IPC)C10K1/14 +2 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedMay 10, 1988Patent grantedDec 15, 1992Term endedDec 15, 2009

Sources & verification

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