Expired Canadian patentCanada
Process for the preparation of l-phosphinothricine (derivatives) and also of their alkyl esters
CA 1302649 C · Owner: Bayer Cropscience Gmbh · Inventors: Zeiss, Hans-Joachim
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The process for the preparation of L-phosphinothricine (derivatives) by homogeneous asymmetric hydrogenation of 2,3-dehydrophospinothricine (derivatives) by means of suitable ruthenium, rhodium or iridium catalysts.
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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 June 2, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 2, 2009.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 20, 1987
GrantedJune 2, 1992
Term endedJune 2, 2009
Patent numberCA 1302649 C
Classification (IPC)C07K5/08 +2 more
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.