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Expired Canadian patentCanada

Rapid absorption steam humidifying system

CA 2062318 C · Owner: Nelson, Kirk A. · Inventors: Morton, Bernard W.; Nelson, Kirk A.

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

An improved apparatus for introducing steam into an airstream in a heating, ventilating and air conditioning system includes a supply header, steam dispersing structure and structure for collecting condensation from the steam dispersing structure. The supply header is adapted for connection to a source of steam and is preferably elevated with respect to the return header, so that condensation in the supply header is forced into the return header under the influence of steam pressure and gravity. Both headers may further be inclined to improve drainage of condensation. The invention optionally may utilize fenders in conjunction with the steam dispersing structure to minimize heat transfer to …

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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

  • Filed March 5, 1992 and granted September 6, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 5, 2012.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 5, 2014.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 5, 1992
GrantedSeptember 6, 1994
Term endedMarch 5, 2012
Patent numberCA 2062318 C
Classification (IPC)F24F6/18

Timeline

Timeline From CIPO dates

1993199519971999200120032005200720092011Application filedMarch 5, 1992Patent grantedSep 6, 1994Term endedMarch 5, 2012

Sources & verification

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