Serpent sediment-sluicing system
CA 2084402 C · Owner: Stole, Haakon · Inventors: Stole, Haakon
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and a means of removing sedimented particles in a fluid stream in a settlement basin (2). In the bottom of the settlement basin (2) there is a sluice (1) which may have a sluice gate (6). At the bottom of the settlement basin there is a longitudinal flexible unit (4) which is shaped so that it can open or close the space between sluice (1) and the settlement basin (2). The unit (4) can move up or down the sluice (1) so that the space and thereby the point at which the sluice (1) attacks the settlement basin (2) can be at any point along the entire length of the sluice (1).
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 April 27, 1990 and granted June 6, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 27, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 27, 2012.
- 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.