Method of starting, stopping and operating gas sensor with built-in heater
CA 2485605 C · Owner: Suzuki, Akihiro · Inventors: Sasaki, Takashi; Suzuki, Akihiro; Abe, Hiroyuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A control apparatus for a gas sensor with a built-in heater is provided which can , prevent damage to, deterioration of and reduction in accuracy of detection of, a gas , sensor. When an ignition switch is turned ON supply of electricity to a , heater 27 starts and when the temperature in the vicinity of a gas sensor 15 (gas temperature of gas , detection chamber 24) Ts becomes greater than a predetermined temperature #Ti at start, or when a predetermined electricity supply time after start of supply of electricity to the , heater 27 has elapsed the gas sensor 15 is started. The flow of off-gas is started , simultaneously with starting of the gas sensor 15 or after starting. When 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
- Filed May 12, 2003 and granted August 28, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 12, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 12, 2025.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.