Analog voltage memory device
CA 1086426 A · Owner: Matsushita Electric Industrial Co. Ltd. · Inventors: Minami, Shunji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is an analog voltage memory device comprising a differential amplifier for deriving the difference between two analog inputs, an operational amplifier to which are applied the output of the differential amplifier and the source follower voltage of a MOS type field-effect transistor switching means interccnnected to the output terminal of the operational amplifier and the gate of the field-effect transistor, an output resistor interconnected between the source of the field-effect transistor and a negative power source or ground and a nonpolarized capacitor interconnected between the gate of the field-effect transistor and a negative power source or ground, whereby the output …
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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 23, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 23, 1997.
- 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.