Formation of leather sheet material using hydroentanglement
CA 2567988 C · Owner: E-Leather Limited · Inventors: Bevan, Christopher Graham
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Leather sheet material is made by hydroentangling a web (4) of mixed reclaimed leather fibres and synthetic fibres. The synthetic fibres are meltable bicomponent fibres which are heated prior to entanglement to fuse and form a supporting network for the leather fibres. A sheet of tissue paper (1a) is laid over the surface of the leather fibre web (4) and hydroentanglement jets (16) are directed through the tissue paper into the web.
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 27, 2005 and granted May 15, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 27, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.