Cmos oscillator
CA 2012556 C · Owner: Schnabel, Jurgen · Inventors: Schnabel, Jurgen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A high-speed, temperature- and parameter-stable controllable CMOS oscillator is suitable for low to very high frequencies, e.g. clearly above 100 MHz. The oscillator includes a two-stage differential amplifier (D) and two controlled current sources (I1, I2) which are interconnected via a frequencydetermining capacitor (C). The two current sources (I1 I2) are, connected to the inputs (IN1, IN2) of the differential amplifier (D) through a first resistor (R1) and a second resistor (R2) respectively. By means of a first switching unit (S1) connected to the inputs of the differential amplifier (D) a first current, path is completed in response to the voltage drop across the first resistor (R1) …
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 March 20, 1990 and granted January 16, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 20, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 20, 2012.
- 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.