Coated abrasive article
CA 2330853 A1 · Owner: Dahlke, Gregg D. · Inventors: George, Clayton A.; Masmar, Craig A.; Karim, Naimul
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A coated abrasive article comprises a backing a first binder on the backing, and a plurality of abrasive particles in the first binder. The first binder precursor is an energy-curable, preferably melt-processable resing containing an epoxy resin, an ethylene-vinyl acetate copolymer and a curing agent for , cross-linking the epoxy resin that is cured to provide a cross-linked make coating. The above binder precursors of the invention are preferably free of homopolymers and copolymers of olefinic monomers. In another aspect the , invention also describes an energy curable first binder precursor containing an epoxy resin, an ethylene-vinyl acetate copolymer a polyfunctional acrylate , …
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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 March 5, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 5, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 5, 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
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.