Superconducting metal oxide compositions and process for manufacture
CA 1341237 C · Owner: Gopalakrishnan, Jagannatha · Inventors: Gopalakrishnan, Jagannatha; Sleight, Arthur William; Subramanian, Munirpallam Appadorai
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compositions having the nominal formula Bi a Sr b Ca c Cu3O x, wherein a is from about 1 to 3 b is from about 3/8 to 4, c is from about 3/16 to 2 x = (1.5a + b + c + y) where, y is from about 2 to 5 with the proviso that, "b + c" is from about 3/2 to 5 containing a metal, oxide phase of the formula Bi Sr3-z, Ca z, Cu2, O8+w, wherein z is from about 0.1 to 0.9 w is greater than zero but less than 1 are superconducting. Processes for manufacturing such compositions and for using them are disclsoed.
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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 May 22, 2001. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 22, 2018.
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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.