Patent Yard Sign in
Expired Canadian patentCanada

Calorimeter

CA 1183370 A · Owner: The Babcock & Wilcox Company · Inventors: Bohl, Thomas L.; Pocock, Robert E.; Zimmerlin, Sharon L.

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

Open the CIPO record

Abstract From the Canadian patent

A calorimeter and method of obtaining the calorific value of a test gas comprises a pair of constant flow pumps one for supplying air at known volumetric flow and the other for supplying a test gas at known volumetric flow. The known volumetric flow of air if maintained at a level sufficient to provide enough oxygen to fully burn all oxidizable components of the test gas. The air and test gas are mixed and catalytically burned in a heated block and the combustion products are thereafter supplied to an electrochemical oxygen measuring cell which measures the remaining oxygen in the mixture. A circuit arrangement is utilized to obtain a value proportional to the difference between the …

Read the whole patent

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 March 5, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 5, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 17, 1983
GrantedMarch 5, 1985
Term endedMarch 5, 2002
Patent numberCA 1183370 A
Classification (IPC)G01N31/12 +2 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedJune 17, 1983Patent grantedMarch 5, 1985Term endedMarch 5, 2002

Sources & verification

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