Thermosetting binder for an abrasive article
CA 2117644 A1 · Owner: Schultz, William J. · Inventors: Larson, Eric G.; Schultz, William J.; Kincaid, Don H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to an abrasive article comprising: (a) a plurality of abrasive grains; and (b) at least one binder for the abrasive grains, wherein the binder comprises a cured precursor wherein the precursor comprises: (i) optionally an epoxy resin; (ii) optionally a modifying component selected from the group consisting of modifying components of general formula (I) wherein X represents an epoxy group; R comprises a divalent linking group selected from the group consisting of polycyclic aryls cyclic alkyls, and polycyclic alkyls; and R1 is independently selected from the group consisting of hydrogen and other groups substantially inert to polymerization of epoxide group containing …
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 February 16, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 16, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 16, 2015.
- 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.