Method for selective removal of materials present in one or more layers on an object, and apparatus for implementation of this method
CA 2519214 A1 · Owner: Jaubertie, Yvon Georges Jean-Pierre · Inventors: Jaubertie, Yvon Georges Jean-Pierre
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is provided a method and apparatus for selective removal of materials present on an object A in one or more layers B by surface abrasion by projection onto the surface of the object A of a moving fluid composed of a gas and solid particles conveyed in the gas. The apparatus comprises at least two reservoirs (11,13,15) for solid particles (21 22, 23) of at least two , different sizes communicating with a single reservoir 30 trough conduits (24,25,26). Each conduit (24,25,26) has an obturator (27,28,29) movable between open and closed positions and the single reservoir (30) is connected to a further conduit (36) provided with a nozzle (37) situated in the proximity of the …
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 14, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 14, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 14, 2025.
- 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.