Treatment of biodegradable material
CA 1103375 A · Owner: Dunlop Plantations Limited · Inventors: Greenshields, Roderick N.; Pannell, Stephen D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of treating biodegradable organic material in which a liquid medium containing the material is caused to flow upwardly through an upright working chamber which has an aspect ratio of not less than 3:1, flocculent micro-organism capable of digesting at least a part of the biodegradable organic material being grown in the working chamber gas comprising, oxygen being introduced into the chamber to enable the microorganism to grow, and the resultant mixture of treated medium gas and biomass being discharged through a common outlet at the top of the chamber. The method is suitable for treating industrial effluent, especially of food industries and the, biomass produced may be used as a …
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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
- Granted June 16, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 16, 1998.
- 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.