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Expired Canadian patentCanada

Reversible electrochemical mirror (rem) with improved electrolytic solution

CA 2340083 C · Owner: Tench, D. Morgan · Inventors: Tench, D. Morgan; Warren, Leslie F. Jr.; Cunningham, Michael A.

CIPO record

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Abstract From the Canadian patent

A reversible electrochemical mirror (REM) includes a first electrode (106) and a second electrode (110), one of which is substantially transparent. An electrolytic solution (112), disposed between the first and second electrodes contains ions (116) of a metal which can electrodeposit on the electrodes depending on the applied potential. The electrolytic solution also contains halide and/or pseudohalide anions having a total molar concentration ratio of at least 6:1 compared to that of the electrodepositable metal. It is usually necessary to apply a surface modification layer (108) to the firs electrode to ensure uniform nucleation so that a mirror electrodeposit having high …

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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 June 20, 2000 and granted December 9, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 20, 2020.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 20, 2022.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 20, 2000
GrantedDecember 9, 2003
Term endedJune 20, 2020
Patent numberCA 2340083 C
Classification (IPC)G02F1/15 +2 more

Timeline

Timeline From CIPO dates

2001200320052007200920112013201520172019Application filedJune 20, 2000Patent grantedDec 9, 2003Term endedJune 20, 2020

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