Wet paper web transfer belt
CA 2442440 C · Owner: Ichikawa Co. Ltd. · Inventors: Inoue, Kenji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A paper web transfer belt for use in the press part of a closed draw paper making , machine. The belt comprises a base body; a wet paper side layer located on a wet paper , side of the base body; and a machine side layer located on a machine side of the base body , and the belt comprises fibres protruding from its web contacting surface. By selecting the , average protruding length of the fibres to be within the range of 0.01 to 3mm the , invention provides a wet paper web transfer belt which may be used over a long term, while fully realizing good adhesion of a wet paper web from the transfer belt when the wet , paper web is transferred to a next stage in the paper making process.
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 September 25, 2003 and granted February 28, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 25, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 25, 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.