Modular shipboard membrane bioreactor system for combined wastewater stream
CA 2104433 C · Owner: Behmann, Henry · Inventors: Behmann, Henry
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Raw sewage ("black water" from toilets) wastewater, from showers, sinks, kitchen facilities ("grey water") and oily water from the bilge of a host vessel ("oily water") in combination, unexpectedly provide the essential nutrients for a live mass of mixed microorganisms which are peculiarly well-adapted to ingest the nutrients. To facilitate availability of oxygen to the microorganisms as to provide growth of the microorganisms, and also to allow, them destroy to themselves, excess oxygen is discharged in, a combination of microbubbles and macrobubbles into a, membrane bioreactor ("MBR"). The mixture of bubbles is preferably generated with coarse (>2 mm) and fine (< 20µm) bubble diffusers. …
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 August 19, 1993 and granted September 15, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 19, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 19, 2015.
- 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.