Sintered alumina-zirconia ceramic bodies
CA 1298322 C · Owner: Bauer, Ralph · Inventors: Pellow, Scott W.; Bauer, Ralph; Knapp, Christopher E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An abrasive grit is made by sintering a seeded alumina gel containing zirconia powder. At least 50% of the zirconia is in the tetragonal stabilized crystal structure with up to 50% being in the monoclinic form. The zirconia powder is produced by rapid quenching, preferably in quenching of a fusion of zirconia with or without a stabilizing agent such as yttrium oxide. The abrasive grits so produced are useful in heavy duty grinding of both stainless and carbon steel.
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
- Granted March 31, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 31, 2009.
- 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.