Method of operating a sequencing batch reactor
CA 2185137 C · Owner: Keller, Jurg · Inventors: Ho, Kin Man; Subramaniam, Kanthav Anam; Keller, Jurg
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of operating a sequencing batch reactor is described in which feed is supplied thereto by distributing feed into settled sludge in the bottom part of the reactor. A sequencing batch reactor having means for supplying feed to the bottom of the reactor is also described.
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 March 10, 1995 and granted January 22, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 10, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 10, 2017.
- 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.