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Expired Canadian patentCanada

Cuvette with non-flexing thermally conductive wall

CA 1307654 C · Owner: Eastman Kodak Company · Inventors: Middleton, David H.; Helfer, Jeffrey L.; Porte, Johannes J.

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

Abstract of the Disclosure, There is disclosed a cuvette constructed with an improved sample fluid thermal time constant featuring a flexible heat transfer wall. To prevent such wall from deforming under pressure generated at high processing temperatures, thereby reducing heat transfer efficiency, the opposite wall is constructed to have a flexural strength that is sufficiently less than that of the heat transfer wall. This causes flexing to occur in the opposite wall, under pressure, rather than the heat transfer wall.

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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 22, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 22, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 4, 1988
GrantedSeptember 22, 1992
Term endedSeptember 22, 2009
Patent numberCA 1307654 C
Classification (IPC)G01N21/03 +2 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedMay 4, 1988Patent grantedSep 22, 1992Term endedSep 22, 2009

Sources & verification

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