Herbicidal pyridine n-oxide sulfonylureas
CA 1299569 C · Owner: Dean, Thomas Robert · Inventors: Barnette, William Eldo; Wexler, Barry Arthur; Petersen, Wallace Christian
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Title BA-8701-A, HERBICIDAL PYRIDINE N-OXIDE SULFONYLUREAS Abstract of the Disclosure, This invention relates to pyridine N-oxide sulfonylurea herbicides, agriculturally suitable compositions containing them and their method-of-use as preemergent and/or postemergent herbicides or plant growth regulants.
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 April 28, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 28, 2009.
- 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.