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Expired Canadian patentCanada

2-substituted 2-thiazolines and -2-oxazolines

CA 1250299 A · Owner: Montedison S.P.A. · Inventors: Palla, Ottorino; Gozzo, Franco; Signorini, Ernesto

CIPO record

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Abstract From the Canadian patent

There are described compounds exerting an antidotal activity belonging to the classes of the 2-thiazolines-2-substituted and 2-oxazolines-2-substituted, useful in the defence of agrarian cultivations from the toxic action of non-selective herbicides. Such compounds have the formula (I), wherein Y is an alkyl C1-C4 substituted by one or more halogen atoms selected from the group consisting of Cl Br and F; R1, R2, R3 and R4, like or unlike one another are hydrogen or an alkyl, C1-C4. The compounds are endowed with an antidotal action towards non-selective herbicides in important agrarian cultivations. Furthermore, the invention relates to a method of defending agrarian cultivations from the …

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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 21, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 21, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 3, 1985
GrantedFebruary 21, 1989
Term endedFebruary 21, 2006
Patent numberCA 1250299 A
Classification (IPC)C07D277/10 +2 more

Timeline

Timeline From CIPO dates

1986198919921995199820012004Application filedJan 3, 1985Patent grantedFeb 21, 1989Term endedFeb 21, 2006

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.