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Expired Canadian patentCanada

Insecticidal aerosol

CA 1309337 C · Owner: Dohara, Kazunobu · Inventors: Dohara, Kazunobu; Shinjo, Goro; Shiraishi, Motomitsu

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 mono-layer liquid phase type water-based insecticidal aerosol comprises a base liquid for aerosol containing at least one specific pyrethroidal compound a specific organic solvent and a specific buffer solution which base liquid has a pH of from 7.0 to 11.0 and, dimethyl ether as a propellant. The aerosol according to the present invention has a long-term storage stability as well as an excellent insecticidal activity and causes no degradation of the container.

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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 October 27, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 27, 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.
FiledDecember 13, 1988
GrantedOctober 27, 1992
Term endedOctober 27, 2009
Patent numberCA 1309337 C
Classification (IPC)A01N25/06 +1 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedDec 13, 1988Patent grantedOct 27, 1992Term endedOct 27, 2009

Sources & verification

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