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Expired Canadian patentCanada

System and method for controlling temperature of a liquid residing within a tank

CA 2492003 C · Owner: Synapse, Inc. · Inventors: Phillips, Terry; Patterson, Wade C.

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Abstract From the Canadian patent

A system (100,300,800,825) for controlling a temperature of a liquid residing within a tank (17) comprises a temperature sensor (152,837) a temperature , control element (25,305) memory (121,321), and logic (115, 315,815 835). The , temperature sensor is configured to detect the temperature of the liquid residing within the tank, and the temperature control element is coupled to the tank. The memory stores data indicative of a usage history of the tank and the logic is configured to automatically control the temperature control element based on the data.

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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

  • Filed November 15, 2002 and granted March 19, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 15, 2022.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 15, 2024.
  • 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 15, 2002
GrantedMarch 19, 2013
Term endedNovember 15, 2022
Patent numberCA 2492003 C
Classification (IPC)G05D23/00 +2 more

Timeline

Timeline From CIPO dates

2003200520072009201120132015201720192021Application filedNov 15, 2002Patent grantedMarch 19, 2013Term endedNov 15, 2022

Sources & verification

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