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Expired Canadian patentCanada

Method for remotely detecting an electric field

CA 1279099 C · Owner: Mohebban, Manoochehr · Inventors: Mohebban, Manoochehr

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

A method for detecting an electric field surrounding an electrical component with a device having a liquid crystal display element, the device being positioned at a distance from the component and being unconnected ohmically to either the component or ground.

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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 January 15, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 15, 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.
FiledFebruary 2, 1988
GrantedJanuary 15, 1991
Term endedJanuary 15, 2008
Patent numberCA 1279099 C
Classification (IPC)G02F1/13 +1 more

Timeline

Timeline From CIPO dates

1989199119931995199719992001200320052007Application filedFeb 2, 1988Patent grantedJan 15, 1991Term endedJan 15, 2008

Sources & verification

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