Expired Canadian patentCanada
Method of improving the bonding qualities of abrasive and refractory materials produced in electric furnaces
CA 122015 A · Owner: The Norton Company · Inventors: Higgins, Aldus C.; Jeppson, George V.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordRead 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
- Granted November 23, 1909. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 23, 1926.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 16, 1909
GrantedNovember 23, 1909
Term endedNovember 23, 1926
Patent numberCA 122015 A
Classification (IPC)—
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.