Refractory vessel and lining therefor
CA 2418630 A1 · Owner: Gorog, John Peter · Inventors: Gorog, John Peter; Abdullah, Zia
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A refractory vessel that can be used as a gasifier for black liquor includes a generally cylindrical metal shell having a dome. A refractory shell has a cylindrical, portion spaced inwardly from the metal shell and a dome portion that is spaced inwardly, from the metal dome. The refractory shell is sized to provide an expansion gap between, the liner and the metal shell. A selectively crushable liner is positioned in the gap. The, liner has a predetermined yield stress that will provide controlled resistance to expansion, of the refractory shell.
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 February 11, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 11, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 11, 2025.
- 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.