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Expired Canadian patentCanada

Fluorophthalimides

CA 1295335 C · Owner: Meiji Seika Kabushiki Kaisha · Inventors: Koyama, Masao; Kurihara, Kunihiko; Sezaki, Masaji

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Fluorophthalimide compounds represented by the following general formula (I):, (I), wherein R each stands for an ethyl group or an isopropyl group, are effective for controlling diseases of agricultural plants, especially diseases caused by microorganisms belonging to the genus Rhizoctonia represented by sheath blight of rice plants and diseases, caused by Basidomycetes.

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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 4, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 4, 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.
FiledApril 29, 1987
GrantedFebruary 4, 1992
Term endedFebruary 4, 2009
Patent numberCA 1295335 C
Classification (IPC)C07D209/48 +1 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedApril 29, 1987Patent grantedFeb 4, 1992Term endedFeb 4, 2009

Sources & verification

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