Electron-beam curable epoxy compositions
CA 2272123 A1 · Owner: Walton, Thomas C. · Inventors: Walton, Thomas C.; Crivello, James V.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for high-speed curing of low reactivity epoxy resins to produce products having high strength, high temperature resistance and high storage , modulus is described. A composition comprising a low reactivity epoxy resin is also described. The process and the composition both utilize onium salts and are cured utilizing ionizing radiation specifically gamma irradiation.
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 September 30, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 30, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 30, 2019.
- 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.