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Expired Canadian patentCanada

Herbicidal suspension concentrate formulation

CA 2569897 C · Owner: Formstone, Carl Andrew · Inventors: Griffiths, Andrew John; Formstone, Carl Andrew; Sohm, Rupert Heinrich

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

An aqueous pre-mix suspension concentrate formulation comprising: (i) water (ii) an HPPD inhibitor, in suspension in the water and (iii) an electrolyte, in solution in the water which has improved stability of the HPPD inhibitor is disclosed.

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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

  • Filed June 21, 2005 and granted October 16, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 21, 2025.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 21, 2005
GrantedOctober 16, 2012
Term endedJune 21, 2025
Patent numberCA 2569897 C
Classification (IPC)A01N61/00 +1 more

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedJune 21, 2005Patent grantedOct 16, 2012Term endedJune 21, 2025

Sources & verification

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