Papermachine belt
CA 2494465 A1 · Owner: Karlsson, Kjell Anders · Inventors: Karlsson, Kjell Anders; Lidar, Vaino Per-Ola
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A papermachine belt comprising at least one layer of parallel yarns. The ratio of the volume of yarns is in this layer to the void volume is greater than 1:1. The papermachine belt comprises a supporting base a fibrous batt and at , least one layer of the polymeric material on the paper web-receiving surface of the belt. A plurality of fibres from the fibrous batt extend at least partially through the polymeric material to the paper web-receiving surface of the belt, providing reliable release of the paper web.
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 February 24, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 24, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 24, 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.