Process and apparatus for promoting growth of biomass
CA 1181538 A · Owner: Simon-Hartley Limited · Inventors: Walker, Ian; Austin, Eric P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process and apparatus for promoting growth of biomass from a supply of suitable nutrient for example, for the treatment of sewage or industrial effluent by the so-called activated sludge process. There is provided a tank (10) containing a filling consisting of a plurality of freely movable bodies (11) each formed as a block of reticular foamed material defining within its internal structure a substantial voidage which provides a protective environment to permit the growth of biomass effluent, to be treated being introduced into the tank via line (12), treated liquor leaving the tank via main (14) bodies (11) being removed continually or periodically by conveyor (21) and recycled to tank …
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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 January 22, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 22, 2002.
- 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.