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Expired Canadian patentCanada

Process for controlling cockroaches and other crawling insects

CA 1052266 A · Owner: Herculite Protective Fabrics Corporation · Inventors: Kydonieus, Agis F.

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Abstract From the Canadian patent

Process for controlling, i.e. significantly reducing the population of, cockroaches and other crawling insects comprising deploying strips of polymeric controlled release dispensers to insect crawl paths and harborages, the dispensers containing a low volatility toxicant for the insects which is made available on the surfaces of the dispensers and which, in a concentration of from 50 to 500 mg/sq.ft. of dispenser active surface area, is lethal to the insects after relatively brief periods of direct physical contact. Generally strips, aggregating from about 1/3 to about 3 sq.ft. of active dispenser surface area are adequate to achieve control of cockroaches and other crawling insects in an …

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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 April 10, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 10, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedApril 10, 1979
Term endedApril 10, 1996
Patent numberCA 1052266 A
Classification (IPC)A01N25/00 +1 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedApril 10, 1979Term endedApril 10, 1996

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