Process for production of holes including microperforations in a composite material, device for its implementation, and soundproofing layer made of the said material
CA 2394046 C · Owner: Airbus Operations Sas · Inventors: Dublineau, Pascal; Buge, Michel; Porte, Alain
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The purpose of the invention is a process for the production of holes particularly of micro-perforations, in a composite material constituted by fibers embedded in a resinous matrix characterized in that it consists in a preliminary step of carrying out on a specimen of the composite material with the help of a laser beam, tests consisting in adjusting the duration of illumination at a predetermined place on the specimen as well as the focusing and power of said laser beam so as to confine the temperature in the mass of the material to a range of temperatures both greater than the thermal decomposition temperature of the matrix resin and below the temperature of altering the physical …
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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 July 11, 2002 and granted May 31, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 11, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 11, 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
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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.