Double barrier system for an in situ conversion process
CA 2605720 C · Owner: Mckinzie, Billy John · Inventors: Cowan, Kenneth Michael; Vinegar, Harold J.; Wong, Sau-Wai
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides a double barrier system (132) for a subsurface treatment area, that includes a first barrier (136) formed around at least a portion of the subsurface treatment area the first barrier configured to , inhibit fluid from exiting or entering the subsurface treatment area; and a second barrier (138) formed around at least a portion of the first barrier wherein a separation space exists between the first barrier and the second barrier. The invention also provides methods of forming the double barrier system.
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 March 11, 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.