Alloy fibers with reduced heatset shrinkage
CA 2280250 C · Owner: Basf Corporation · Inventors: Reader, Arthur M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A carpet yarn is a plurality of fibers spun from a multiconstituent polymer alloy composed of 60 wt.% or more of nylon 6; up to about 37 wt.% of a stereoregular polyolefin having a melt flow index of from about 2 to about 100; and 3 - 37 wt.% of a polyolefin that is at least partially modified by one or more type of polar monomer. Upon steam heatsetting at about 124°C the yarn shrinks less than about 20%.
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 August 12, 1999 and granted October 15, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 12, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 12, 2021.
- 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.