Method for operating a circuit arrangement for a sanitary fitting
CA 2044910 C · Owner: Hansa Metallwerke Ag · Inventors: Kunkel, Horst K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A circuit arrangement for a sanitary fitting controlled in a non-contacting manner comprises a transmitter (3) as well as a receiver (4), at which radiation emitted by the transmitter (3) arrives after reflection on an abject (7). In an initialisation process which takes, place for the first time after the initial installation thereafter at greater regular time intervals the capacity, of the transmitter (3) is increased until the reflection on a stationary object (7) in the monitoring range has the result that the evaluation circuit (5) following the receiver (4) is activated. Now the capacity of the transmitter (3) is once more reduced somewhat; the circuit arrangement changes to normal …
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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 June 18, 1991 and granted January 2, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 18, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 18, 2013.
- 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.