Fracturing fluid base oil
CA 2435629 C · Owner: Mesher, Shaun · Inventors: Mesher, Shaun; Schesnuik, Chester; Edwards, John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fracturing fluid base oil is formed as a blend of diesel and stabilized light condensates consisting essentially of hydrocarbons in the range of C6-C24 preferably consisting essentially of C7-C9 and C10-C16 hydrocarbons. The hydrocarbons may be nonpartially or fully hydrotreated and may comprise n-alkanes 10 to 80 % by wt preferably <40% by wt, isoalkanes 10-80% by wt preferably >40% by wt, and aromatics no greater than 30% by wt preferably <20% by wt. The blended fluid has a preferred viscosity less than 1.25 cSt at 40°C and a pour paint less than -30°C preferably less than -40°C. The density should be less than 840 kg/m3 and preferably less than 810 kg/m3. The Reid vapor Pressure should …
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 July 21, 2003 and granted May 31, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 21, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 21, 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.