Method of fabricating film for solar cells
CA 2285788 C · Owner: Oyanagi, Hiroyuki · Inventors: Niki, Shigeru; Oyanagi, Hiroyuki; Yamada, Akimasa
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of fabricating Cu.alpha.(In x Ga1-x).beta.(Se y Si-y)Y films for solar cells includes forming an electrode on a substrate and supplying the substrate and electrode with Cu, In, Ga, Se, and S to form a Cu.alpha.(In x Ga1-x).beta.(Se y Si-y)Y film. Simultaneously with the supplying of Cu In, Ga, Se and S, the substrate is supplied with water vapor or a gas that contains a hydroxyl group.
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 October 8, 1999 and granted July 1, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 8, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 8, 2021.
- 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.