Basicity-resistant refractory
CA 2113396 A1 · Owner: Mitsubishi Materials Corporation · Inventors: Yamaguchi, Kenichi; Kimura, Etsuji; Ogino, Fumihiko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A refractory material is disclosed for use in protecting furnace components from extreme temperatures and which provides satisfactory erosion resistance against basic melts. The refractory material includes a composite oxide having magnesium oxide as its main component, together with a secondary oxide which forms a high-melting-point composite oxide with magnesium oxide and iron oxides by reacting with iron oxides in a melt or calcined mass. On contact with a basic melt oxides in the melt, combine with the magnesium oxide and secondary oxide of the refractory material to form a solid-solution composite oxide which covers the refractory surface and prevents penetration by the melt. Bricks …
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 January 13, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 13, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 13, 2016.
- 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.