Patent Yard Sign in
Expired Canadian patentCanada

External ear canal electrode to be placed proximate the tympanic membrane and method of stimulating/recording utilizing external ear canal electrode placed proximate the tympanic membrane

CA 1292285 C · Owner: Stypulkowski, Paul H. · Inventors: Stypulkowski, Paul H.; Van Den Honert, Christopher

CIPO record

Overview

Drawings and full text

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

Open the CIPO record

Abstract From the Canadian patent

An electrode (10) adapted to be utilized within the external ear canal (46) for applying/recording electrical signals to/from the neural/neuromuscular system of a person having an external ear canal (46) and adjacent tympanic membrane (48). The electrode (10) utilizes an elongated flexible body (12) having a proximate end (14) and a distal end (16). A compressible material (18) is mounted at the distal end (16) of the body (12) and an electrically conductive gel (20) is carried by the compressible material (18). An electrical conductor (22) communicates with the body (12) and electrically couples the conductive gel (20) to the proximate end (14) of the electrode (10). A method (30) of …

Read the whole patent

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 19, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 19, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 17, 1986
GrantedNovember 19, 1991
Term endedNovember 19, 2008
Patent numberCA 1292285 C
Classification (IPC)A61F11/04 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedJuly 17, 1986Patent grantedNov 19, 1991Term endedNov 19, 2008

Sources & verification

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