Method for remediating manure-contaminated material and for producing an enriched fertilizer therefrom
CA 2397427 A1 · Owner: Stout, Roy Calvin · Inventors: Horn, Terry Dean; Warner, Kenneth R.; Horn, Ronald Dean
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to a method is hereby provided for remediating manure-contaminated material. The method of the present invention comprises providing a mass of manure-contaminated material including in situ-formed bacteria and nitrogen-containing materials. The mass of manure-contaminated material is acidified to a pH of not more than about 7.0 without (a) destroying a, substantial portion of said active bacteria and/or (b) without liberating a, substantial portion of said nitrogen-containing materials. Then the acidified, manure-contaminated material is particularized preferably , microenfractionated, as hereinafter described. The particularized acidified manure-contaminated, …
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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 12, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 12, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 12, 2024.
- 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.