Expired Canadian patentCanada
Racemization process
CA 1269997 C · Owner: Misner, Jerry Wayne · Inventors: Misner, Jerry Wayne
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
X-6535, Abstract of the Disclosure, The present invention provides a process for the epimerization of (+)-N-methyl-3-(2-methylphenoxy)- 3-phenylpropylamine to its racemic form with an anion forming compound in a suitable solvent.
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 June 5, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 5, 2007.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 25, 1986
GrantedJune 5, 1990
Term endedJune 5, 2007
Patent numberCA 1269997 C
Classification (IPC)C07B55/00
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.