Polymer blends of trimethylene terephthalate and an elastomeric polyester
CA 2313867 A1 · Owner: Baker, Samuel M. · Inventors: Fleri, Paul C.; Baker, Samuel M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A polymer blend consisting essentially of 80% to 95% by weight, based on the total weight of the composition of, polytrimethylene terephthalate and from 5% to 20% of an elastomeric polyester. Fibers and extrusions produced from the polymer blend are durable under repetitive compressive stresses exhibit mechanical properties comparable to neat polyamide-6 and, provide moisture stability similar to yarns and extrusions comprised of polyamide-6/10 or polyamide-6/12. These fabrics find use as forming fabrics, and press felt fabrics for paper making machines.
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 July 13, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 13, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 13, 2022.
- 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.