Recovery apparatus
CA 2074325 A1 · Owner: Port Weller Dry Docks, A Division Of Canadian Shipbuilding & Engineering Ltd. · Inventors: Hines, David W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A conveyor is mounted on a watercraft where the belt is a mesh with apertures of selected size and has, upper and lower flights. There is an inboard extent of such flights above the water level and an outboard extent sloping downwardly so that an outer end of the belt is immersed. For oil recovery steam jets over the inboard extent clean the mesh. For algae, seaweed or the like dams on the conveyor deposit these at the inboard reversal of the conveyor.
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 July 21, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 21, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 21, 2014.
- 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.