Hydraulically driven petroleum recovery device and method of use
CA 2590132 C · Owner: Crawford, Joe · Inventors: Crawford, Joe
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved hydraulic downhole oil recovery system that incorporates an above ground hydraulic pumping unit and a submersible bi-directional, reciprocating , downhole hydraulic slave cylinder-based pumping unit. Water rather than , hydraulic fluid, is responsible for actuating the reciprocating downhole pump unit. The water is transferred through the system using seamless coil tubing.
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 December 13, 2005 and granted September 17, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 13, 2025.
- 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.