Process for the preparation of glyphosate and glyphosate derivatives
CA 1286690 C · Owner: Monsanto Technology Llc · Inventors: Smith, Lowell Richard; Rogers, Thomas Edward
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract, A process for preparing glyphosate and other secondary or tertiary amines of related structure in which a precursor primary or secondary amine such as, aminomethylphosphonic acid, is condensed with glyoxylic acid, glyoxal, or a related carbonyl compound, and the condensation product is reduced without isolation to produce the desired product.
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 July 23, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 23, 2008.
- 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.