Dredging system and method
CA 2246740 A1 · Owner: Hodges, Michael · Inventors: Hodges, Michael; Schwartz, Robert Leland; Kane, George C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is directed to a continuous portable dredging system that employs a series of screens (58, 62 66, 70) and gravity separation , devices (142 146) including flocculation with a flocculent (130) to remove sediments from the dredged slurry. The system produces a treated water stream (170) having low solids content and a recovered solids (174) product having a low water content.
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 February 14, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 14, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 14, 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.