Method for removing hydrogen sulphide from crude oil
CA 1270221 C · Owner: Mcshea, Julie A. · Inventors: Hodgson, Philip K.G.; Mcshea, Julie A.; Tinley, Edward J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Hydrogen sulphide is scavenged from a feedstock comprising crude oil and hydrogen sulphide by adding a compound of general formula, R -? - L, to the feedstock. R is an alkyl group containing 1 to 18 carbon atoms, an aryl group, or an alkyl aryl group wherein the alkyl moiety contains 1 to 18 carbon atoms and L is a leaving group. Preferred scavengers include acetic anhydride and triacetamide.
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 June 12, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 12, 2007.
- 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.