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Expired Canadian patentCanada

Automatically stabilized latched differential comparator with single clock

CA 1324641 C · Owner: Thomson Hybrides Et Microondes · Inventors: Campagnie, Bertrand; Thomas, Francois

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A differential comparator working with microwaves and, using only one clock is disclosed. This comparator has a, differential amplifier and a divergence circuit in which are included two voltage level translators. The coupling between the amplifier and the divergence circuit is made at the gates of the load transistors of the divergence circuit. Two insulation transistors, working in either saturated mode or resistive mode, are used to provide the amplifier with an automatic control loop which stabilizes all the rest voltages. The clock signal applied to two, transistors which short circuit the two feedback transistors of the divergence circuit, controls the passage from the measuring phase …

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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 November 23, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 23, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 25, 1988
GrantedNovember 23, 1993
Term endedNovember 23, 2010
Patent numberCA 1324641 C
Classification (IPC)H03K3/35

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedNov 25, 1988Patent grantedNov 23, 1993Term endedNov 23, 2010

Sources & verification

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