Process for the preparation of tetraarylborates
CA 1248141 A · Owner: Invista Technologies S.A.R.L. · Inventors: Beatty, Richard P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
TITLE, Process for the Preparation of, Tetraarylborates ABSTRACT OF THE DISCLOSURE, Process for the preparation of an alkali metal salt of a tetraarylborane by reacting an alkali metal an aryl halide and a borate ester at a ratio of halide to ester in the range of about 4.0/1 to 6.0/1 at a temperature in the range 90-130°C in an inert organic solvent.
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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
- Granted January 3, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 3, 2006.
- 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.