Operational amplifier
CA 1311846 C · Owner: Vranesic, Zvonko G. · Inventors: Vranesic, Zvonko G.; Smith, Kenneth C.; Chong, Chu P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An operational amplifier is provided having first second, and third input terminals for receiving first second and third, input signals respectively the third input terminal of which is, opposite in polarity than the other terminals. The amplifier includes an amplifying portion which comprises a differential section for receiving the three input signals and forms therefrom a pair of difference signals. Also included in the amplifying portion is a summing section and a multiplying section the, summing section of which forms the sum of the difference signals and the multiplying section of which provides an amplification gain to the sum to form an output signal of desired gain. The amplifier …
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
- Granted December 22, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 22, 2009.
- 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.