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Expired Canadian patentCanada

Volatilizing dispenser

CA 1056298 A · Owner: West Chemical Products · Inventors: Spier, I. Martin; Chesmel, David M.

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

A volatilizing dispenser in the form of closely interfitting and vented housing parts adapted for mounting on a vertically oriented support surface provides effective means for the controlled vaporization of liquid air freshening odor counter-, actant and other formulations adapted to the introduction of volatile components to ambient air. The device includes a base providing a liquid reservoir supplied by bulk liquid or replaceable liquid containers and from which liquid is fed to a vertically oriented evaporator element within the device. Vent means peripherally of the base, and in upper portions of the device facilitate a vertical circulation of air past the evaporator element to thereby …

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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 12, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 12, 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—
GrantedJune 12, 1979
Term endedJune 12, 1996
Patent numberCA 1056298 A
Classification (IPC)A61L9/04 +1 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedJune 12, 1979Term endedJune 12, 1996

Sources & verification

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