Varying properties along lengths of temperature limited heaters
CA 2606295 C · Owner: Ginestra, Jean Charles · Inventors: Xie, Xueying; Miller, David Scott; Vinegar, Harold J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system for heating a subsurface formation is described. The system includes an elongated heater in an opening in the formation. The elongated heater includes two or more portions along the length of the heater that have different energy outputs. At least one portion of the elongated heater includes at least one temperature limited portion (240) with at least one selected temperature at which the portion provides a reduced heat output. The heater is configured to provide heat to the formation with the different energy outputs . The heater heats one or more portions of the formation at one or more selected heating rates.
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
- Filed April 21, 2006 and granted August 26, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 21, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.