Sulfur removal from hydrocarbons
CA 1304911 C · Owner: The Dow Chemical Company · Inventors: Wolcott, Richard A.; Pearce, Roscoe L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is disclosed a process for treating liquid (liquifiable) and gaseous hydrocarbon streams to remove substantially all of the acid gases includ-, ing COS, H2S, CO2, and, when present mercaptans, by, contacting the hydrocarbon streams with specific aqueous treating agents in a series of sequential specific limit operations and apparatus. 34,380-F -24-
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 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.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.