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Expired Canadian patentCanada

Automated calorimeter and methods of operating the same

CA 1315567 C · Owner: Pennwalt Corporation · Inventors: Gravelle, Joseph Merle; Burch, Robert Harold

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

Abstract of the Disclosure, A fast reacting automated calorimeter, includes a reaction vessel containing a chemically reacting mass, a fluid circulation system containing heat transfer fluid, a portion of the system passing the fluid through the reaction vessel for exchanging heat between the fluid and the reacting mass, a flow rate controller at least generally responsive to variations in temperature of the reacting mass to vary the flow rate of the fluid circulated through the reaction vessel portion of the circulation system, a flow rate signal generator generating a signal related to the varying flow rate of the fluid passing through the reaction vessel portion of the fluid circulation, …

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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.
FiledNovember 28, 1988
GrantedApril 6, 1993
Term endedApril 6, 2010
Patent numberCA 1315567 C
Classification (IPC)G01N25/48 +1 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedNov 28, 1988Patent 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.