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Expired Canadian patentCanada

Humidifier with floating wick assembly

CA 1315669 C · Owner: Stanek, Terrence L. · Inventors: Steiner, Robert E.; Stanek, Terrence L.

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 room humidifier is disclosed as having a reservoir tank containing a freely and independently floatable wick element providing a constant evaporative area as the water level in the tank rises and falls. A fan is mounted in fixed position relative to an upper end of the tank. An extensible and collapsible closed air path is provided between the wick element and the fan, and an outside air flow path extends between open upper areas of the tank and the wick element while also being in, air flow communication with the fan. When the fan is operated air is drawn into the outside air flow path for contact with the constant evaporative area of the wick element while also drawing, air with …

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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 6, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 6, 2010.
  • 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 29, 1989
GrantedApril 6, 1993
Term endedApril 6, 2010
Patent numberCA 1315669 C
Classification (IPC)B01F3/04

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedJune 29, 1989Patent grantedApril 6, 1993Term endedApril 6, 2010

Sources & verification

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