Bilayer surface scrubbing
CA 2368291 A1 · Owner: Shaw, James Stephen · Inventors: Shaw, James Stephen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fluid stream (28) is discharged along a workpiece surface (14) toward a boss (12), thereof to form a boundary layer (30) atop the surface. A stream of pliant shot (34) is, scrubbed across the boss for selectively abrading target material therefrom while the, boundary layer protects the surface from abrasion.
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 January 17, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 17, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 17, 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
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.