Artificial leather and method of manufacture
CA 1069425 A · Owner: Inmont Corporation (Delaware) · Inventors: Loew, Frederic C.; Civardi, Frank P.; Lach, George S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for making an artificial leather sheet material which comprised providing a sheet of microporous preformed elastomeric polyurethane material having on one of its faces a second thermoplastic elastomeric polyurethane of lower melting point than said first mentioned polyurethane said second polyurethane having a hot tacky adhesive surface and pressing the hot tacky adhesive surface against the surface of a permeable fabric of interlaced multi-fiber yarns. The material is for instance, suitable for making, shoe uppers.
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
- Granted January 8, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 8, 1997.
- 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.