Nuclear magnetic resonance determination of petrophysical properties of geologic structures
CA 2193066 C · Owner: Coates, George R. · Inventors: Coates, George R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved system for using magnetic resonance techniques to obtain information relating to geologic structures is disclosed. The system (30 and 32) of the present invention uses values of the total porosity of a formation and the porosity obtained via NMR pulse echo techniques, to derive additional information relating to the underlying geologic structures includ-, ing resistivity and water saturation.
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 June 16, 1995 and granted May 7, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 16, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 16, 2017.
- 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.