Method and device for producing and utilizing gas from waste materials
CA 2222819 C · Owner: Busch, Michael · Inventors: Martin, Johannes Josef Edmund; Busch, Michael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In this process for gasifying and burning waste materials the waste materials are introduced into an incinerator (1) and end up on a burning grate (6) to which air is conducted by means of various undergrate forced draft chambers (8a to 8e). In the first area air is introduced at a superstoichiometric level in order to ignite the waste materials. Then via the undergrate forced, draft chambers (8c to 8e) oxygen is mixed into the air which is used for the gasification at the, same time establishing a substoichiometric level which leads to gasification of the waste materials. These combustible gases which come about in the process pass via the waste gas flue (12) into a second furnace (2), in …
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 November 28, 1997 and granted October 9, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 28, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 28, 2019.
- 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.