Abrasive product, method of making and using the same, and apparatus for making the same
CA 2494514 A1 · Owner: Chesley, Jason A. · Inventors: Welygan, Dennis G.; Chesley, Jason A.; Moren, Louis S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides a method and apparatus for making an abrasive product comprising providing a substantially horizontally deployed flexible backing (10) having a first surface (12) bearing an at least partially cured primer coating and an opposite second surface (13); providing a dry flowable particle mixture (24) comprising abrasive particles and particulate curable binder material; depositing a plurality of temporary shaped structures (27) comprised of said particle mixture (24) on the at least partially cured primer coating of the first surface (12) of the backing (10); softening said particulate curable binder material to provide adhesion between adjacent abrasive …
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 June 2, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 2, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 2, 2025.
- 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.