Solar cell and method of manufacturing same
CA 2370731 A1 · Owner: Fujita, Kentaro · Inventors: Emoto, Makiko; Yokota, Hiroshi; Fujita, Kentaro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A solar cell is manufactured by bringing a front side of a semiconductor crystal substrate into contact with an electrolytic liquid containing a fluoride placing an, electrode in the electrolytic liquid passing a current, between the electrode and the semiconductor crystal substrate and applying light to the semiconductor crystal substrate to generate pairs of holes and electrons. Etching of the substrate proceeds by combining the holes with ions in the front side of the semiconductor crystal substrate which is held in contact with the electrolytic liquid thereby forming, at least one surface irregularity structure thereon.
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 February 5, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 5, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 5, 2024.
- 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.