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Expired Canadian patentCanada

Reversible electrochemical mirror (rem) state monitoring

CA 2388872 C · Owner: Rockwell Technologies, Llc · Inventors: Tench, D. Morgan

CIPO record

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Abstract From the Canadian patent

Reversible electrochemical mirror (REM) devices typically comprise a conductive oxide mirror electrode (106) that is substantially transparent to radiation of some, wavelengths, a counter electrode (110) that may also be substantially transparent, and an, electrolyte (112) that contains ions of an electrodepositable metal. A voltage applied between, the two electrodes causes electrodeposition of a mirror deposit on the mirror electrode and, dissolution of the mirror deposit on the counter electrode and these , processes are reversed, when the polarity of the applied voltage is changed. Such REM devices provide precise control, over the reflection and transmission of radiation and can …

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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 September 12, 2001 and granted June 10, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 12, 2021.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 12, 2023.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 12, 2001
GrantedJune 10, 2003
Term endedSeptember 12, 2021
Patent numberCA 2388872 C
Classification (IPC)G02F1/00 +2 more

Timeline

Timeline From CIPO dates

2002200420062008201020122014201620182020Application filedSep 12, 2001Patent grantedJune 10, 2003Term endedSep 12, 2021

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