Process for ammoxidizing saturated hydrocarbons
CA 2089983 C · Owner: Rhone-Poulenc Chimie · Inventors: Blanchard, Gilbert; Ferre, Gilbert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
his invention relates to a process for ammoxidation of alkanes in the vapour phase whereby a saturated acyclic alkane with from 3 to 12 carbon atoms is reacted with ammonia and oxygen in the presence of a solid catalyst with at least one active phase where the said active phase corresponds to the following empirical formula (I) V Sba Mb Ox (I) in which: a represents an integer or fraction equal to or greater to 1 M represents an iron atom and/or a gallium and/or indium atom b represents an integer or fraction equal to or greater to 0.5 x represents an integer or fraction determined by the degree of oxidation of the other active-phase elements. This invention's particular focus is a process …
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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 February 19, 1993 and granted August 12, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 19, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 19, 2015.
- 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.