Photoelectric conversion element and power generation system using the same
CA 2102948 C · Owner: Canon Kabushiki Kaisha · Inventors: Niwa, Mitsuyuki; Tonogaki, Masahiko; Aoike, Tatsuyuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is directed to provide a photovoltaic element in which the open-circuit voltage and the carrier range of holes are improved by preventing the recombination of photoexcited carriers. The photovoltaic element composed of a p-type layer, an i-type layer of a lamination structure consisting of an i-type layer by RFPCVD on the p-type layer side and an i-type layer by microwave (µW) PCVD on the n-type layer side, or an i-type layer by microwave (µw) PCVD on the p-type layer side and an i-type layer by RFPCVD on the n-type layer side characterized in that the i-type layer by µWPCVD is one formed by a µWPCVD in which a lower µW energy and a higher RF energy than µW energy to …
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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 November 12, 1993 and granted October 27, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 12, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 12, 2015.
- 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.