Abrasive tools made with a self-avoiding abrasive grain array
CA 2540733 C · Owner: Saint-Gobain Abrasives, Inc. · Inventors: Molter, Jens M.; Bateman, Charles A.; Hall, Richard W. J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abrasive tools contain abrasive grains oriented in an array according to a nonuniform pattern having an exclusionary zone around each abrasive grain and , the exclusionary zone has a- minimum dimension that exceeds the maximum diameter of the desired grit size range for the abrasive grain. Methods for designing such a self-avoiding array of abrasive grain and for transferring such an array to an abrasive tool body are described.
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 7, 2004 and granted December 17, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 7, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 7, 2026.
- 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.