Method for improving aramid yarn bundle cohesiveness
CA 2589853 C · Owner: Peters, Martinus · Inventors: Peters, Martinus; Willemsen, Stephanus; Janssen, Johannes
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention pertains to a method for improving bundle cohesiveness of a bundle of aramid yarns and decreasing its friction coefficient comprising , adding to the bundle of yarns 0.1 - 3.0 wt.% based on the yarn weight, of a , water~-soluble or water-dispersible film forming binding agent followed by , treating the bundle of yarns with an oil having an intrinsic viscosity less than 100 mm2/s.
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 November 26, 2005 and granted January 29, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 26, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.