Multi-phase compensated spinner flow meter
CA 2492522 A1 · Owner: Georgi, Daniel T. · Inventors: Chace, David; Wang, Jianrong; Georgi, Daniel T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A compensated flow measuring system for measuring a multi-phase fluid flow in a well. An impeller (35) intercepts a downhole multi-phase flow. Capacitance and conductivity sensors are mounted in probe (50) and in close proximity to the impeller and provide measure of electrical admittance of the fluid. The electronics system (15) contains a phase detector for separating the capacitive and conductive signals and providing a signal related to a compensated multi-phase flow rate.
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 12, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 12, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 12, 2024.
- 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.