Intermediate compounds usable for the preparation of herbicides
CA 1312622 C · Owner: Mulhauser, Michel · Inventors: Mulhauser, Michel; Bottanet, Bernard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to compounds of formula: in which R4 is a group which can be hydrogenolyzed R1 is a, hydrocarbon group and R is a hydrogen atom or a hydrocarbon group, and X- is an HSO?, Cl- or R7SO? anion to their, preparation by the hydrolysis of the compounds of formula: in which R2 and R3 are alkyl, cycloalkyl or aralkyl groups linked to the oxygen via a secondary carbon and to their, use in the preparation by hydrogenolysis of herbicides.
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 January 12, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 12, 2010.
- 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.