Waste treatment
CA 2228819 A1 · Owner: Agrides Inc. · Inventors: Grise, Michel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for the treatment of liquid hog manure which comprises adding a cellulosic material to the liquid hog manure mixing the cellulosic material , and liquid hog manure, separating said mixture to leave a solids portion and a liquid portion, drying said solids portion, and further treating said liquid portion. The methodremoves solids from the liquid hog manure and the solids may then be used, for a fuel value while the liquid portion may be used as a manure or for other purposes.
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 April 9, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 9, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 9, 2020.
- 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.