Process for waste injection into landfill
CA 2071541 A1 · Owner: Chesner, Warren · Inventors: Chesner, Warren
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relating to a process for managing wastes and reclaiming landfill sites by using the inherent void space that exists within municipal solid waste landfills is disclosed. The process comprises the injection of selected wastes and additives under pressure into the void space of existing landfills. Various materials can be added to the selected waste from such as hydraulic cement, lime, coal fly ash, waste fixing agents buffering, agents, water and plasticizers. These additives can assist in adding strength to the waste form, creating an insoluble waste material, adjusing the pH environment of the injected material and, enhancing its flowability. Depending on the waste …
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 August 19, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 19, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 19, 2013.
- 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.