Carpet
CA 2102023 A1 · Owner: Vorwerk & Co. Interholding Gmbh · Inventors: Holzel, Klaus; Beyer, Friedrich; Werner, Achim
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a carpet having pile threads forming a pile layer, a support layer which consists of fiber or ribbon material of polyolefins or polyester and a back, coating, the pile threads being attached to the support layer possibly by the back coating, and of a plastic of comparatively high resistance to temperature in particular, polyamide 6 or 6.6, and the back coating is attached as lamination to the top material. In order to obtain a strong attachment of the layers to each other if possible without, limiting the recyclability of the carpet the invention, proposes that the back coating be effected by means of a lamination adhesive which contains unmelted fibers in, …
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 October 29, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 29, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 29, 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.