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Expired Canadian patentCanada

Circuit and method for split bias enable/inhibit memory operation

CA 1238413 A · Owner: Fairchild Semiconductor Corporation · Inventors: Santos, Joe

CIPO record

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Abstract From the Canadian patent

A circuit and method for enabling/disabling a differential signal output from a memory device such, as a bipolar static random access memory is disclosed. A split bias, current steering circuit includes a first differential amplifier for steering a current ID along a first current path when a first selected differential input signal, corresponding to a first logic state is, coupled to a first input terminal of said first differential amplifier; and includes a second differential amplifier for steering current ID along a second current path when a second selected differential input signal corresponding to a second logic state, is coupled to a second input terminal of said second differential …

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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 June 21, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 21, 2005.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 22, 1985
GrantedJune 21, 1988
Term endedJune 21, 2005
Patent numberCA 1238413 A
Classification (IPC)G11C11/40

Timeline

Timeline From CIPO dates

1986198819901992199419961998200020022004Application filedMarch 22, 1985Patent grantedJune 21, 1988Term endedJune 21, 2005

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.