Regulated mos substrate bias voltage generator for a static random access memory
CA 1183951 A · Owner: Fairchild Camera And Instrument Corporation · Inventors: Domitrowich, Joseph R.; Lee, Yong K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A regulated substrate bias voltage generating system for maintaining a minimum data retaining current through an associated MOS memory. The negative substrate bias voltage is generated by a charge pump operating under the control of a two-phased output oscillator, the operation of which is enabled and disabled by the output signals from a MOS memory overcurrent sensor, a MOS memory under-current sensor and, a bias voltage level sensor.
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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 March 12, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 12, 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.