Process for the production of new phosphinic acids and derivatives thereof, as well as the use thereof
CA 1109482 A · Owner: Novartis Pharma Canada Inc./Novartis Pharma Canada Inc. · Inventors: Maier, Ludwig
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention is concerned with a new process for preparing bis(carboxyalkylamino) phosphinic acids and derivatives thereof, and especially deals with the novel compound bis(glycylmethyl) phosphinic acid of the formula and derivatives thereof including those substituted on the NH-group. This acid, salts and derivatives thereof have plant-growth regulating and herbicidal properties.
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 September 22, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 22, 1998.
- 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.