Expired Canadian patentCanada
Isocyanate-polyester polyol binder for manufacture of lignocellulosic composites
CA 1331247 C · Owner: Grozdits, George A. · Inventors: Israel, Michael G.; Moss, Ernest K.; Grozdits, George A.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract, A binder for use in the preparation of a synthetic board from cellulosic and/or lignocellulosic material comprising an organic polyisocyanate and a polyester polyol, especially an aromatic polyester polyol.
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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 August 2, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 2, 2011.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 9, 1987
GrantedAugust 2, 1994
Term endedAugust 2, 2011
Patent numberCA 1331247 C
Classification (IPC)C08G18/42 +2 more
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.