Resin for composite structures
CA 2629139 C · Owner: Milgard Manufacturing Incorporated · Inventors: Brown, Randall Jay; Kharchenko, Semen; Coffee, Harry D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A resin precursor composition for use in the production of composite components includes an isocyanate component comprising a material selected from the group consisting of diphenylmethane diisocyanate a polymeric isomer , of diphenylmethane diisocyanate and combinations thereof. The resin precursor composition also includes at least one polyether polyol having a functionality of three in an amount such that the ratio of the isocyanate component to the at least one polyol is between approximately 80% and 115% of stoichiometric. The resin precursor composition also includes a mold release material and a filler material.
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 August 21, 2006 and granted December 9, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 21, 2026.
- 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.