Circuit arrangement with an operational amplifier
CA 2211276 C · Owner: Seesink, Petrus H. · Inventors: Seesink, Petrus H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Circuit arrangement with an operational amplifier This circuit arrangement has the property of an amplifier with a set or adjustable non-inverting gain and contains an opamp (3) having an a non-inverting and an inverting input (31, 32) as well as an output (33) which is also a signal output (A) of the circuit arrangement, and a current copier (8) having a current input and a current output. The noninverting input (31) is connected to a first reference potenial (P1) and the output (33) via a first resistor (1) to the inverting input (32). The input (E) of the circuit arangement is connected via a second resistor (2) to the curent input of the current copier (8) the current output of which is …
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 July 24, 1997 and granted May 2, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 24, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 24, 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.