Benzothiazolones, their production and use
CA 1305155 C · Owner: Haga, Toru · Inventors: Sato, Ryo; Morita, Kouichi; Nagano, Eiki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to compounds of the formula:, wherein R is a C1-C5 alkyl group a C3-C4 alkenyl group, a, C3-C4 alkynyl group a C1-C2 alkoxy(C1-C2)alkyl group, a, C1-C2 alkylthio(C1-C2)alkyl group or a mono- or polyfluoro- (C1-C3)alkyl group, X is a C1-C4 alkylene group which may be substituted with at least one methyl or a -OCH2- group and n is an integer of 0, 1 or 2. The compounds are useful as 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 July 14, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 14, 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.