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Expired Canadian patentCanada

Electrode system for acquiring electrical signals from the heart

CA 1082316 A · Owner: Wolfe, Donna L. · Inventors: Wolfe, Donna L.

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

Abstract, A wristband having inner and outer sensing electrodes capable of acquiring signals from bipolar limb leads and being electrically associated with electronics capable of processing such signals in a form representative of the electrical activity of the heart. The inner electrode is in continual electrical contact with the skin of the wrist upon which the band is worn. The outer electrode is isolated from the inner electrode and includes an outer portion exposed for contact by the fingers of the wearer's opposite hand. When such finger contact with the outer electrode is made, the bipolar circuit is completed and the ECG skin potential signals are sensed at the electrodes. The …

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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 22, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 22, 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.
FiledAugust 24, 1977
GrantedJuly 22, 1980
Term endedJuly 22, 1997
Patent numberCA 1082316 A
Classification (IPC)A61B5/02 +2 more

Timeline

Timeline From CIPO dates

1978198019821984198619881990199219941996Application filedAug 24, 1977Patent grantedJuly 22, 1980Term endedJuly 22, 1997

Sources & verification

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