Method for brominating cinnamalacetophenone
CA 1049562 A · Owner: Chemetron Corporation · Inventors: Grinninger, Lowell D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, An improved method for brominating cinnamalacetophenone is characterized by the use of a saturated aliphatic hydrocarbon as the reaction medium, recycling of the reaction medium as a mother liquor, and the alternating use of stoichiometric amounts and less-than-stoichiometric amounts of bromine in the preparation of cinnamalacetophenone tetrabromide.
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
- Granted February 27, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 27, 1996.
- 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.