Foam core laminate structures with facer material and interactive adhesive
CA 1292933 C · Owner: Dishart, Kenneth Thomas · Inventors: Brothers, Robert Carl; Dishart, Kenneth Thomas; Baitinger, Stacey Ann
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Laminate structures comprising a foamed polyurethane or polyisocyanurate resin core with a facer material uniformly adhered thereto with an adhesive material having functional groups capable of interacting chemically with isocyanate groups in the foamed resin core are disclosed. Suitable adhesive materials include .alpha.-olefin-acid copolymers ethylene, vinyl alcohol, polyimides, polyamines and phenolic resins. The bond between the foam core and the facer material has a peel strength of at least 1.5 lbs/in. preferably 5 lbs/in. AD-5479
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 December 10, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 10, 2008.
- 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.