Method for analyzing a separation in a deformable structure
CA 2251666 C · Owner: Michelin Recherche Et Technique S.A. · Inventors: Newman, John W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A deformable structure is subjected to a plurality of reduced pressures causing a bulge in the surface of the deformable structure above a separation in the deformable structure. The cross-sectional area of the bulge is measured for each reduced pressure in a plane parallel to the surface of the deformable structure. When the cross-sectional area of the bulge does not increase with a reduction in the pressure, the cross-sectional area of the bulge approximates the area of the separation. The depth of the separation is calculated using the change in cross-sectional area of the bulge per change in pressure.
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 April 15, 1997 and granted April 9, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 15, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 15, 2019.
- 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.