Wear resistant coating blade or a corresponding blade for the treatment of a paper web
CA 2503240 A1 · Owner: Vesterlund, Ingmar · Inventors: Vesterlund, Ingmar
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A treatment blade (4), such as a coating doctor or creping blade, designated , for the treatment of a paper web and provided with a wear resistant coating (42), in which blade the area to be coated has been roughened before the coating process. The roughening traces (43) are perpendicular to the longitudinal direction of the treatment blade.
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 21, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 21, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 21, 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.