Patent Yard Sign in
Expired Canadian patentCanada

Method for generating steam

CA 1099602 A · Owner: Texaco Canada Inc. · Inventors: Redford, David A.

CIPO record

Overview

Drawings and full text

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

Open the CIPO record

Abstract From the Canadian patent

METHOD FOR GENERATING STEAM, (D#73,500-RCA-40-F) ABSTRACT OF THE DISCLOSURE, Disclosed is a method for generating steam from water containing high concentrations of particulate matter such as silt, clay, etc. without the need for filtering and otherwise treating the water prior to generation of steam therefrom, especially useful for use in a viscous oil recovery process. The method comprises introducing solid particulate materials such as coarse sand etc. into a, thermal cracking unit such as for example, that is used in, the Lurgi-Ruhrgas process. The solids are heated to a temperature of at least 1400°F, and on contacting the crude cause cracking of the viscous crude into lighter …

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 April 21, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 21, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 31, 1978
GrantedApril 21, 1981
Term endedApril 21, 1998
Patent numberCA 1099602 A
Classification (IPC)E21B43/24 +2 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedOct 31, 1978Patent grantedApril 21, 1981Term endedApril 21, 1998

Sources & verification

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