Needled carpet producing system featuring a heat activated anchoring layer
CA 2114427 C · Owner: Tesch, Gunter · Inventors: Tesch, Gunter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for producing a needled, or sewn multilayered carpet is described in which an intermediate layer (6) containing thermoplastic film material is arranged between a layer of backing (5) and a top layer (7). The three layers are bonded together into a carpet by means of a process of needling or sewing through fibers (9). The intermediate layer (6) is formed by lumpy, three-dimensional plastic film material (8) and-, the needled fibers are tightly integrated into the intermediate layer (6) by the influence of temperature.
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 May 25, 1993 and granted May 13, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 25, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 25, 2015.
- 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.