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Expired Canadian patentCanada

Photoelectrochemical reaction cells

CA 2558226 C · Owner: Depenbrock, Michael · Inventors: Ostermann, Dieter; Depenbrock, Michael

CIPO record

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Abstract From the Canadian patent

The invention relates to a reaction cell for the photoelectrochemical production of hydrogen gas comprising a housing which is filled with an aqueous electrolyte, a pair of electrodes consisting of a first electrode of a doped semiconductor which is immersed in the electrolytes and a second electrode which is made of metal and which is immersed in the electrolytes and which is connected in an electrically conductive manner to the first electrode, also comprising a light source which illuminates the pair of electrodes. The reaction cell is characterized in that the electrodes are connected to each other in a flat manner, the pair of electrodes divides the reaction cell into two …

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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 January 18, 2005 and granted March 24, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 18, 2025.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 18, 2005
GrantedMarch 24, 2015
Term endedJanuary 18, 2025
Patent numberCA 2558226 C
Classification (IPC)C25B1/00 +1 more

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedJan 18, 2005Patent grantedMarch 24, 2015Term endedJan 18, 2025

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