Alkoxy-1, 2, 4-triazolo 1,5-c pyrimidine-2- sulfonamides, process for their preparation and intermediates
CA 1331180 C · Owner: The Dow Chemical Company · Inventors: Kleschick, William A.; Gerwick, Ben Cifford Iii; Van Heertum, John C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Alkoxy substituted 1,2,4-triazolo1,5-cpyrimidine-2-sulfonamides are general and selective pre- and postemergence herbicides. These compounds are disclosed which are prepared from alkoxy substituted 1,2,4-triazolo1,5-cpyrimidine-2-sulfonyl halides by condensation with substituted N-trialkylsilylanilines and by other methods.
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 August 2, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 2, 2011.
- 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.