Selective hydrogenation of highly unsaturated compounds in hydrocarbon streams
CA 2178612 C · Owner: Smith, Lawrence A. Jr. · Inventors: Hearn, Dennis; Arganbright, Robert P.; Gildert, Gary R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for the selective, hydrogenation of the diolefins and acetylenic compounds in an olefin-rich aliphatic hydrocarbon stream (1), comprises contacting the feed stream (1) at 40-300 °F under low hydrogen, partial pressure of 0.1-70 psia at a total pressure of 0-350 psig in, a distillation column reactor (10) containing a hydrogenation catalyst, bed (12) which serves as a component of a distillation structure (10), such are supported PdO encased in a, tubular wire mesh. Essentially no hydrogenation of the olefins occur. The feed stream (1) enters below or at the lower end of the catalyst bed, (12) and is contacted with hydrogen, fed through line (2) in the catalyst bed (12). The …
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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
- Filed July 21, 1994 and granted October 1, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 21, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 21, 2016.
- 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
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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.