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Expired Canadian patentCanada

Semitransparent electrophoretic information displays (epid) employing mesh-like electrodes

CA 2013709 C · Owner: Disanto, Frank J. · Inventors: Krusos, Denis A.; Disanto, Frank J.

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

An electrophoretic display includes a plurality of intersecting grid and cathode lines which are spaced one from the other by means of an insulating material. The grid and cathode lines are associated with an anode electrode which constitutes a planar glass plate having deposited thereon a thin layer of ITO or a similar metal. Interposed between the cathode and grid structure and the anode plate is a mesh electrode which is relatively of the same size as the anode plate. Control voltages are applied to the mesh structure and the anode electrode to further control particle propagation. The conventional anode structure may be entirely replaced with the mesh-like structure to provide an …

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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

  • Filed April 3, 1990 and granted July 16, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 3, 2010.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 3, 2012.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 3, 1990
GrantedJuly 16, 1996
Term endedApril 3, 2010
Patent numberCA 2013709 C
Classification (IPC)G09G3/00 +2 more

Timeline

Timeline From CIPO dates

1991199319951997199920012003200520072009Application filedApril 3, 1990Patent grantedJuly 16, 1996Term endedApril 3, 2010

Sources & verification

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