Method of producing thin films of compound i-iii-vi, promoting the incorporation of iii elements in the film
CA 2511894 C · Owner: Guimard, Denis · Inventors: Guimard, Denis; Taunier, Stephane; Guillemoles, Jean-Francois
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method of producing thin films of compound CIGS by means of electrodeposition. According to the invention a surface-active compound, such as dodecyl sodium sulphate is added to an electrolysis bath solution in order to promote the incorporation of gallium in the CIGS films.
Read the whole patent
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 December 23, 2003 and granted May 22, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 23, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 23, 2025.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.