Liquid level meter
CA 2290266 A1 · Owner: Lutke, Wolfram · Inventors: Neuhaus, Joachim; Reimelt, Ralf; Thoren, Werner
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A liquid level meter is provided for measuring a level of a liquid (1) in a container (3), which meter measures acceptably in the case of liquids with low dielectric constants, and the installation and maintenance of which are simple and cost effective. This meter comprises an electronic circuit (13) which, generates electromagnetic signals in operation a, conductor (7), which projects into the container (3) along which a float (11, 11a, 11b, 11c 11d, 11e) moves, along with the level, which has at least one segment reflecting electromagnetic signals, an injector (9) which transmits the signals from the circuit (13) to the conductor (7), which conductor (7) leads the signals into the …
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 November 23, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 23, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 23, 2021.
- 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.