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Expired Canadian patentCanada

Start-up procedure for a residual oil processing unit

CA 1069453 A · Owner: Cities Service Research And Development Company · Inventors: James, Lewis C.

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

In starting up an upflow ebullated bed hydroprocessing, reactor a light oil is used, to establish an ebullating bed. As heavy residual feedstock is incrementally substituted the ebullating pump speed and gas flow rate need to be monitored and adjusted for smooth operation. By knowing and controlling the viscosity and density of the feestock flow variations inside the reactor can be minimized resulting, in a constant pump speed and gas flow rate.

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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 January 8, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 8, 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.
Filed—
GrantedJanuary 8, 1980
Term endedJanuary 8, 1997
Patent numberCA 1069453 A
Classification (IPC)C10G47/00 +1 more

Sources & verification

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