Waste destruction
CA 1270405 C · Owner: Skf Steel Engineering Ab · Inventors: Johansson, Hakan; Bentell, Lars; Eriksson, Sven
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a method of destroying waste to form a leach-proof slag and a gas containing only H2 and CO as combustible constituents. The method comprises the steps of:, a) supplying waste material at the top of a shaft furnace while simultaneously supplying energy in the form of hot oxidizing gas at the bottom of the shaft furnace, b) discharging liquid slag from the bottom of the furnace shaft and withdrawing the gas generated at, the top of the furnace shaft, and, c) supplying the gas generated to a subsequent reac-, tion chamber while simultaneously supplying energy in the form of a hot gas.
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 June 19, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 19, 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.