Soft hand, low luster, high body carpet filaments
CA 2476236 C · Owner: Boyle, John B. · Inventors: Portus, Bruce W.; Matrunich, James A.; Shealy, Carole G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Novel filaments and yarns for carpets, upholstery and other applications the , spinneret and method for their production and carpets manufactured therefrom. The filaments of the invention are solid multi-lobal filaments of complex convex-concave surface contour possessing low luster low moment of inertia, high color intensity upon dyeing and high covering power. Carpets manufactured therefrom possess low luster, soft hand high covering power and high body , suitable for premium residential application. The filaments of the invention are produced at high throughput and productivity by the method of the invention.
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 February 10, 2003 and granted May 15, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 10, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 10, 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.