Canadian application, no grantCanada
Dry grinding wheel
CA 2043261 A1 · Owner: Norton Company · Inventors: Ramakrishnan, Muni S.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Organically bonded abrasive articles comprising seeded sol gel alumina filamentary abrasive particles have an improved dry grinding performance when the particles have silicon-enriched surfaces.
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 May 24, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 24, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 24, 2013.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 24, 1991
GrantedNo grant recorded
Term endedMay 24, 2011
Patent numberCA 2043261 A1
Classification (IPC)B24D3/28 +2 more
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.