Process for the preparation of n-phosphonomethylglycine
CA 1339749 C · Owner: Rogers, Peter Edward · Inventors: Rogers, Peter Edward; Fields, Donald Lee Jr.; Baysdon, Sherrol Lee
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process is disclosed for the preparation of N-phosphonomethylglycine which comprises bringing together under reaction conditions glyoxylic acid or a derivative thereof and an N-acylaminomethylphosphonic acid represented by the formula, wherein R is selected from the group consisting of alkyl having from one to about 6 carbon atoms halo-alkyl having from one to about six carbon atoms benzyl and phenyl.
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 March 17, 1998. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 17, 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.