Chain-stitched carpet yarns
CA 2128237 A1 · Owner: Werny, Frank · Inventors: Vinod, Yashavant Vinayak; Werny, Frank; Dehowitt, Jack Renato
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to carpet yarns having an improved chain-stitch structure, where each component yarn (1 2) forms a , series of tightly held loops along the entire length of yarn. The invention also includes a method for producing such yarns and carpets composed of such yarns.
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 December 30, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 30, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 30, 2014.
- 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.