Unsaturated polyester resin compositions comprising metallic monomers
CA 2280512 A1 · Owner: Bailey, Michael A. · Inventors: Costin, Richard C.; Bailey, Michael A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composition useful as a gel coat, binder laminating resin or, molding resin comprising (A) unsaturated polyester resin which is the reaction product of one or more polyols and one or more ethylenically unsaturated polycarboxylic acids, anhydrides or amides, and, optionally one or more polyethylenically unsaturated monomers or a vinyl ester resin, (B) one or more first monomer selected from the group consisting of styrene, vinyl toluene, methyl methacrylate N-vinyl, pyrolidone, ethylene glycol dimethacrylate and the dimethacrylate of alkoxylated Bisphenol A, and (C) a second monomer selected from the group consisting of metal salts of an alpha beta-ethylenically, unsaturated carboxylic …
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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
- Filed August 20, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 20, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 20, 2021.
- 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
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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.