Filling level measurement device operating with microwaves
CA 2215626 C · Owner: Eckert, Manfred · Inventors: Eckert, Manfred; Oberle, Klaus-Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A filling level measuring device operating with microwaves and to be fastened on a container (3) is provided, said device having a housing (11) and a rod-shaped antenna (7) pointing into the container (3) and said device being designed such that the antenna (7) does not transmit or receive microwaves in the region of a measuring device fastening and the transmitted power is not impaired by condensate or moisture. According to a first solution variant the antenna (7), is fastened in the housing (11) and a section of the antenna (7) in the region of the measuring device fastening is surrounded by a metallic sleeve (8). According to a second solution variant a sleeve (8a), in which the antenna …
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 September 16, 1997 and granted March 28, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 16, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 16, 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.