2-substituted phenyl-4,5,6,7-tetrahydro-2h-isoindole- 1,3-diones, and their production and use
CA 1232912 A · Owner: Sumitomo Chemical Co. Ltd. · Inventors: Yoshida, Ryo; Nagano, Eiki; Hashimoto, Shunichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
23 -, ABSTRACT, 2-SUBSTITUTED PHENYL-4,5,6,7-TETRAHYDRO-2H-ISO- INDOLE-1,3-DIONES, AND THEIR PRODUCTION AND USE A compound of the formula:, wherein R1 is a hydrogen atom a fluorine atom or a methyl, group and R2 is a C1-C3 alkyl group a C1-C5 alkoxy group, a, chloro(C2-C4)alkoxy group a dichloro(C2-C4)alkoxy group, a, cyclo(C3-C7)alkoxy group a phenoxy group, a C1-C5 alkylthio, group or a di(C1-C5)alkylamino group which is useful as a, herbicide.
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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 February 16, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 16, 2005.
- 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
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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.