Operational amplifier
CA 1194153 A · Owner: N.V. Philips Gloeilampenfabrieken · Inventors: Van De Plassche, Rudy J.; Dijkmans, Eise C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
13, ABSTRACT:, "Operational amplifier." An operational amplifier with frequency compensation is described. The amplifier comprises a first amplifier (2) with a low-impedance output (10) followed by a transconductance amplifier (3) with a capacitive feed-forward (C1). The transconductance amplifier (3) is followed by a Miller integrator (8, 9). Fig. 3.
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 September 24, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 24, 2002.
- 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.