Off-shore sewage treating and handling apparatus and method
CA 2248595 C · Owner: Allen, John Leon · Inventors: Allen, John Leon
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus and method for accommodating and handling excess deliveries of combined sewage overflows to a sewage treatment plant supported and contained within an off-shore moored vessel or platform by diverting the excess , deliveries to ballast tanks for temporary displacement of clean ballast water and to be returned to the treatment system when excess deliveries of combined sewage overflow are relieved. Fluids contained within the ballast tanks are utilized to provide buoyant support for process tankage. Baffles within the ballast tanks minimize underisable mixing of the combined sewage overflows with the resident clean ballast water.
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 12, 1997 and granted July 27, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 12, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 12, 2019.
- 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.