Wool-like rugs and processes for making the same
CA 2270263 A1 · Owner: Shaw Industries Group, Inc. · Inventors: Bryant, Christopher S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A rug exhibiting a wool-like appearance made by the process comprising the steps, of a. extruding a dyeable polyolefin resin comprising the reaction product of a, polypropylene and an ethylene alkyl acrylate copolymer to provide an extruded fiber; b. drawing the extruded fiber by conveying the fiber among a system of unheated and heated, godets; c. crimping the drawn fiber by passing the fiber into a texturing jet utilizing hot air;, d. twisting at least two separate drawn and crimped fibers to provide a multiply carpet, face yarn wherein the yarn is from about 1000 to about 8000 denier and has about 2 to, about 7 twists per inch; e. heat-setting the multi-ply yarn; f. dyeing the …
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 April 27, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 27, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 27, 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.