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Expired Canadian patentCanada

Fertilizer impregnated with liquid agricultural treatment compositions, and method of impregnation

CA 1333224 C · Owner: Incitec, Ltd. · Inventors: Carrothers, Daniel Harper; Fischbein, Milton

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

A free-flowing fertilizer composition composed of a fertilizer impregnated with a herbicide in an amount greater than about 23.5 liters/tonne. A method for impregnating a fertilizer with a herbicide which involves impregnating said fertilizer with the herbicide in an amount of greater than about 23.5 liters/tonne, wherein said fertilizer remains sufficiently free-flowing for application by conventional fertilizer application means.

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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 November 29, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 29, 2011.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 28, 1988
GrantedNovember 29, 1994
Term endedNovember 29, 2011
Patent numberCA 1333224 C
Classification (IPC)C05G3/00 +1 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedNov 28, 1988Patent grantedNov 29, 1994Term endedNov 29, 2011

Sources & verification

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