Process for durable sol-gel produced alumina-based ceramics, abrasive grain and abrasive products
CA 1254238 A · Owner: Minnesota Mining And Manufacturing Company · Inventors: Schwabel, Mark G.; Gerk, Alvin P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Process for Durable Sol-Gel Produced Alumina- Based Ceramic Abrasive Grain and Abrasive Products Abstract of the Disclosure, A sol-gel process of producing durable alpha aluminabased ceramic abrasive grain from alpha alumina monohydrate is improved by the addition of a nucleating agent. Improved abrasive products containing the durable ceramic abrasive grains are also provided.
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 May 16, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 16, 2006.
- 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.