Float adapted to track an interface between two liquids of differing density
CA 2444310 A1 · Owner: Watchel, Brian · Inventors: Watchel, Brian
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A float adapted to track an interface between two liquids of differing density, includes a hollow buoyant body having an interior cavity adapted to retain liquid. At least one upper access opening is provided in the body which is adapted to, permit filling of the interior cavity with liquid. The interior cavity is capable of holding sufficient liquid to retard the buoyancy of the body. By filling the interior cavity with a liquid of a first density the hollow buoyant, body can be made to float at an interface with a lighter liquid of a second density.
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 24, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 24, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 24, 2025.
- 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.