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Expired Canadian patentCanada

Scheduled hot water heating based on automatically adjusted historical data

CA 1214842 A · Owner: Fluidmaster, Inc. · Inventors: Blau, Frederick, Jr.; Gross, John M.; Vandermeyden, Tom R.

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 conventional hot water heating system generally of the type for heating water in multiple units of hotels, motels and the like and using any heating medium has a processor and control assembly operationally connected to at least a heating control means, a water temperature sensing means and a water flow sensing means thereof. The processor and control assembly divides the time into exact time periods say, one-half hour, and the time periods are grouped into a group of consecutive time periods, say a week. Taking any individual time period, a directly preceding time period is checked with the same time period in the preceding group of time periods and if the …

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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 December 2, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 2, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 17, 1984
GrantedDecember 2, 1986
Term endedDecember 2, 2003
Patent numberCA 1214842 A
Classification (IPC)F24H9/20 +2 more

Timeline

Timeline From CIPO dates

1985198719891991199319951997199920012003Application filedApril 17, 1984Patent grantedDec 2, 1986Term endedDec 2, 2003

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