Homogenizer/high shear mixing technology for on-the-fly hydration of fracturing fluids and on-the-fly mixing of cement slurries
CA 2220972 C · Owner: Pierce, Ronald G. · Inventors: Gupta, D. V. Satyanarayana; Pierce, Ronald G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus for rapidly hydrating a hydratable gel comprising the steps of introducing a predetermined amount of the gel into a stream of hydrating fluid, pumping the stream into a high shear rate mixer having a shear rate of at least 25,000 s-1, and directing the hydrated fluid away from the mixer means for treatment of a subterranean formation.
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 November 20, 1997 and granted March 9, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 20, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 20, 2019.
- 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.