Operational amplifier
CA 1301861 C · Owner: Fujitsu Limited · Inventors: Tojo, Toshiro; Kinoshita, Kazumi; Takato, Kenji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An operational amplifier, in particular an operational amplifier which is driven by a first power source and a second power source which are mutually different and which has a voltage buffer portion provided between the two power sources. Specifically out of the input stage, second stage, and output stage constituting a usual operational amplifier the input, stage and the second stage are classed as a second circuit portion driven by said second power source and said input stage, second stage, and output stage are classed as first circuit portion driven by said first power source.
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 May 26, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 26, 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.