Dense oxide refractory
CA 1267916 C · Owner: Trostel, Louis J. · Inventors: Ault, Neil N.; Trostel, Louis J.; Butkus, Anthony K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A refractory product is shown in the form of a dense sintered alumina-chromia, zirconia-alumina-silica zirconia-alumina body, or zirconia-chromia-alumina having less than about 8% of homogeneously distributed closec porosity formed by sintering an intimate interdispersion of fine particles of alumina-chromia, zirconia-alumina-silica zirconia-alumina, or zirconia-chromia-alumina.
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 April 17, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 17, 2007.
- 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.