Alkylation process and catalyst therefor
CA 2104436 C · Owner: Kallenbach, Lyle Ray · Inventors: Miller, David Charles; Kallenbach, Lyle Ray; Wright, Roy Franklin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
a composition of matter comprises trifluoromethanesulfonic acid on a solid support material which contains boron phosphate and/or boron sulfate. Preferred support materials are boron phosphate boron, phosphate-coated silica and boron sulfate-coated silica. The above composition is used as a catalyst for alkylating at least one C2-C7 alkane (preferably isobutane or an isopentane) with at least one C2-C7 alkene (preferably butene-2).
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 August 19, 1993 and granted October 28, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 19, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 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
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.