Process for producing gasoline components
CA 2043189 C · Owner: Shell Canada Limited · Inventors: Maxwell, Ian E.; Den Otter, Gerrit J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Process for producing gasoline components from a hydrocarbanaceous feed containing hydrocarbons comprising at least 4 carbon atoms, and hydrocarbons obtained thereby. The process comprises the following steps:, a) separating feed into a heavy fraction containing hydrocarbons comprising at least 7 carbon atoms an intermediate fraction containing mainly hydrocarbons comprising 6 or 7 carbon atoms and a, light fraction containing hydrocarbons comprising at most 6 carbon atoms, b) isomerizing at least part of the light fraction c) combining effluent of step b) with intermediate fraction, and separating off a stream containing normal hydrocarbons and a stream containing branched hydrocarbons, …
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
- Filed May 24, 1991 and granted September 11, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 24, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 24, 2013.
- 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.