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Expired Canadian patentCanada

Method of mass producing an entomophagous insect

CA 1255550 A · Owner: Societe Cooperative Agricole De Semences De Limagne "Limagrain" · Inventors: Pizzol, Jeannine; Voegele, Jean; Jourdheuil, Pierre

CIPO record

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

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Abstract From the Canadian patent

The invention relates to a method for the mass production of an entomophagous insect such as Trichogramma maidis insect from a substitution host such as the egg of the meal moth Ephestia kuehniella, as well as a device for implementation of this method and the application of the method to the biological fight against maize crop ravagers.

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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 June 13, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 13, 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.
FiledAugust 7, 1986
GrantedJune 13, 1989
Term endedJune 13, 2006
Patent numberCA 1255550 A
Classification (IPC)A01K67/00 +1 more

Timeline

Timeline From CIPO dates

1987198919911993199519971999200120032005Application filedAug 7, 1986Patent grantedJune 13, 1989Term endedJune 13, 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.