Process for producing thallium type superconducting thin film
CA 1338864 C · Owner: Yazu, Shuji · Inventors: Itozaki, Hideo; Yazu, Shuji; Harada, Keizo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Improvement in heat-treatment of a superconducting thin film of thallium tape compound oxide deposited on a substrate by PVD or CVD. }n the invention the heat-treatment is effected at a temperature between 880 °C and 920 °C for a predetermined time duration under such a condition that the partial pressure of thallium oxide become higher than the saturated vapour pressure of thallium oxide at said temperature.
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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 January 21, 1997. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 21, 2014.
- 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.