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Expired Canadian patentCanada

Process for selectively removing hydrogen sulfide from a gas stream at high pressure

CA 1304913 C · Owner: Snavely, Earl S. Jr. · Inventors: Snavely, Earl S. Jr.; Jones, Timothy A.

CIPO record

Overview

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

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Abstract From the Canadian patent

Hydrogen sulfide can be removed selectively from a gas stream also containing carbon dioxide at high pressure such as, those found at natural gas production wellheads by contacting the, gas stream with an alkaline liquid for a time period of less than about 80 milliseconds.

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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 July 14, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 14, 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.
FiledNovember 14, 1988
GrantedJuly 14, 1992
Term endedJuly 14, 2009
Patent numberCA 1304913 C
Classification (IPC)B01D53/14 +1 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedNov 14, 1988Patent grantedJuly 14, 1992Term endedJuly 14, 2009

Sources & verification

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