Magnetic field sensor device
CA 2112640 A1 · Owner: Tamayo Lopez, Braulio · Inventors: Sanchez Trujillo, Carmen; Hernandez Carbonero, Miguel; Sempere Hernandez, Francisco
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Magnetic field sensor device Of the type based on flux-gate technology and second harmonic detection, that comprises a master oscillator (1) used as reference in a generator (2) to generate two signals of basic operating frequency and of double frequency respectively. The first one is amplified in a power booster (3) in order to energise the magnetising coil in the sensor head (4). The output signal from the sensor head is filtered in a bandpass filter (5), the output signal of which is detected in a phase detector (6) that is connected to a lowpass filter (7). It also incorporates a communications block (8) and a selfcalibration block (9) for the transmission of data to a remote station …
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 December 30, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 30, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 30, 2015.
- 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.