Chemical surface deposition of ultra-thin semiconductors
CA 2458620 A1 · Owner: University Of Delaware · Inventors: Shafarman, William N.; Mccandless, Brian E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A chemical surface deposition process for forming an ultra-thin semiconducting film of Group IIB-VIA compounds onto a substrate. This process eliminates particulates formed by homogeneous reactions in bath dramatically increases , the utilization of Group IIB species and results in the formation of a dense adherent film for thin film solar cells. The process involves applying a premixed liquid coating composition containing Group IIB and Group VIA ionic species onto a preheated substrate. Heat from the substrate causes a heterogeneous reaction between the Group IIB and VIA ionic species of the liquid coating composition, thus forming a solid reaction product film on the substrate …
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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 August 14, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 14, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 14, 2024.
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Timeline
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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.