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Expired Canadian patentCanada

Channel device and tube connection and their fabrication procedures

CA 1290958 C · Owner: Prohaska, Otto J. · Inventors: Prohaska, Otto J.

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

The invention discloses the construction of a channel device for the recording of thermal conductivity, viscosity density, dielectric constant, ect. of liquids and/or gases (sample) where, the sample is directed through a measuring channel with at least, one inlet and one outlet orifice containing at least one sensor, unit and is characterized in that a measuring channel is established by the substrate and a layer forming a wall, which is, arranged in a certain predetermined distance and fabricated ie. by evaporation, spin on, sputtering, drop on ect. procedures, where, the layers can consist of synthetic resin glass, ceramic, ect. and, in that measuring units are deposited in layers in …

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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 22, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 22, 2008.
  • 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 8, 1986
GrantedOctober 22, 1991
Term endedOctober 22, 2008
Patent numberCA 1290958 C
Classification (IPC)G01N1/10 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedDec 8, 1986Patent grantedOct 22, 1991Term endedOct 22, 2008

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