Fluid flow measurement using optical fibres
CA 2521543 C · Owner: Ramos, Rogerio T. · Inventors: Ramos, Rogerio T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of monitoring fluid flow uses an optical fibre having a heatable coating. The fibre is disposed within flowing fluid and the heatable coating , heated so that heat is transferred from the coating to the fluid. Optical measurements of the temperature of the heatable coating are made where the , temperature of the heatable coating depends on the flow velocity of the flowing fluid, and the temperature measurement is used to derive information about the flow. The coating may be an electrically resistive layer on the outer surface of the fibre, that is heated by passing electric current through it. This allows distributed flow measurements to be made. Alternatively discrete …
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 March 22, 2004 and granted July 17, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 22, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 22, 2026.
- 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.