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Expired Canadian patentCanada

Method and device for equalizing the moisture content of porous material

CA 1062002 A · Owner: Gloersen, Stig · Inventors: Gloersen, Stig

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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 process and apparatus for maintaining the uniform moisture content in a continuously conveyed batch of porous materials is described. The porous material is continuously fed through a treatment tank wherein, it is contacted with a liquid to be absorbed therein. The moisture content of the material is continuously monitored as a direct function of the combined weight of the material and the treatment tank to generate error or correction signals, as compared to the uniform weight (moisture content) desired. The control or error signals are utilized to vary the dwell times (up or down) of the porous material in the treatment tank. By varying the dwell times the porous material is contacted …

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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 September 11, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 11, 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—
GrantedSeptember 11, 1979
Term endedSeptember 11, 1996
Patent numberCA 1062002 A
Classification (IPC)F26B17/12 +1 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedSep 11, 1979Term endedSep 11, 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.