Oil recovery systems
CA 2182171 C · Owner: Newsom, Cosby M. · Inventors: Newsom, Cosby M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus for recovering oil spilled upon a body of water. Oil accumulators (10) having numerous open-ended cells (20) entrain spilled oil upon the surfaces (24, 26, 32) of the cells (20) when partially submerged in an area where oil has been spilled upon water. The oil accumulators (10) are rotated so as to lift the oil entrained upon the cell surfaces (24 26, 32) from the water. An oil remover (12) may have superheated steam nozzles (64) located immediately above the oil accumulator (10). When oil-bearing cells pass beneath the nozzles (64), superheated steam may warm and expel the oil from the cells (20). An oil collector (14) collects the oil removed by the oil remover (12) where …
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 October 5, 1994 and granted September 24, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 5, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 5, 2016.
- 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.