High support papermakers fabric
CA 2218165 C · Owner: Asten, Inc. · Inventors: Shipley, Gale
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A woven papermakers fabric having a first system of yarns interwoven with a second system of yarns. The second system of yarns having a repeat which defines three successive knuckles on the paper carrying side of the fabric while maintaining vertical alignment of the first system yarns in the respective first and second layers of the first system by defining a single knuckle on the machine side of the fabric in each repeat. Preferably, the first system yarns are cross machine direction (CMD) yarns which repeat with respect to eight pairs of stacked machine direction (MD) yarns.
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 14, 1997 and granted June 27, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 14, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 14, 2019.
- 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.