Chemical vapor deposition of oxide films containing alkaline earth metals from metal-organic sources
CA 1338202 C · Owner: Charles, Robert George · Inventors: Cifone, William Sam; Charles, Robert George; Szedon, John Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention is a vapor deposition process for making barium or strontium containing ceramic superconductors. It utilizes vaporization of chelates of the metallic constituents of the superconductor at 150-350°C to produce a composite vapor which can be mixed with an oxygen containing gas for depositing a very homogeneous ceramic film on a heated substrate. This invention solves the barium and/or strontium source material volatility problem which has generally prevented the chemical vapor deposition of such materials.
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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
- Granted April 2, 1996. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 2, 2013.
- 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.