Device for testing the scratch resistance of surfaces
CA 2505149 A1 · Owner: Burgel, Andreas · Inventors: Burgel, Andreas; Mleczko, Leslaw; Maleika, Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a device for testing the scratch resistance of surfaces of a sample body by means of a gas flow mixed with solid particles. Said device comprises at least one exchangeable pipe (1) for guiding the gas flow to a sample holder (2) containing the surface to be tested. In order to produce the gas flow, a ventilator is provided at the entrance to the pipe or a suction device (3) is provided at the exit of the pipe and a dosing device , (7) is provided at the entrance to the pipe or downstream along the pipe for dosing the solid particles in the gas flow. The pipe is elbowed in the region of the exit of the pipe, the elbowed pipe part comprising an opening (6) at …
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 October 13, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 13, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 13, 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.