Method and apparatus for studying surface vibrations by moving speckle interferometer
CA 2575951 C · Owner: Statoilhydro Asa · Inventors: Meldahl, Paul; Vikhagen, Eiolf
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of studying a surface using an interferometer in which there is , relative motion between the surface and the interferometer the motion having , a total velocity Vtot which includes a transversal or traversing component Vt and a longitudinal component V1. The method comprises: directing an object beam of coherent light to a measurement position at the surface whereby there , is relative motion between the surface and the measurement position; arranging an array of detectors on the interferometer in a lime extending generally in the transversal direction, the detectors being arranged to detect light rays with different angular directions, representing different sensitivity …
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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 August 3, 2005 and granted April 9, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 3, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.