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Expired Canadian patentCanada

Pseudo rms value circuit

CA 1081851 A · Owner: Communications Satellite Corporation · Inventors: Horna, Otakar A.

CIPO record

Overview

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

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Abstract From the Canadian patent

The specification describes a pseudo rms value circuit comprising means for receiving a plurality of digital signals, a pseudo rms value register, accumulator means for adding and accumulating each digital signal having a value exceeding a predetermined absolute value and counter means, connected to count the overflows from the accumulator means the contents of the counter means being stored in the pseudo rms value register.

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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 July 15, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 15, 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.
FiledOctober 6, 1979
GrantedJuly 15, 1980
Term endedJuly 15, 1997
Patent numberCA 1081851 A
Classification (IPC)H04B3/20

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Application filedOct 6, 1979Patent grantedJuly 15, 1980Term endedJuly 15, 1997

Sources & verification

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