Nitrodiphenyl ether herbicides
CA 1308736 C · Owner: Rohm And Haas Company · Inventors: Johnson, Wayne O.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
i -, PATENT APPLICATION OF, Wayne O. Johnson for, NITRODIPHENYL ETHER HERBICIDES, Docket 79-27A By: TPS/jep 2331D/87Z Abstract of the Disclosure, Compounds of the formula: wherein X is hydrogen, halo, trihalomethyl alkyl, nitro, or cyano; X1 is hydrogen halo, or, trihalomethyl; X2 is trihalomethyl or halo; Y is 0 S, NH or NR1; R1 and R2 are the same or different radicals selected from hydrogen, alkyl or mononuclear, aralkyl; n is 1 to 5, and Z is carboxy amino, mono- and, dialkyl amino and when Z is carboxy the agronomically, acceptable salts, esters thioesters and amides thereof, and compositions containing these compounds exhibit herbicidal activity.
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 October 13, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 13, 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.