Expired Canadian patentCanada
Superconductive material
CA 1339712 C · Owner: Ohkura, Kengo · Inventors: Hitotsuyanagi, Hajime; Ohkura, Kengo; Kakei, Hiromi
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Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A superconductive material is in composition expressed as (Y0.33Ba0.67)aCub(OF)c. The usual a b and c, are so selected as to satisfy a relation expression ax (mix valence of A) + bx (mix valence of B) = cx (mix valence of C).
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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 March 17, 1998. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 17, 2015.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 29, 1988
GrantedMarch 17, 1998
Term endedMarch 17, 2015
Patent numberCA 1339712 C
Classification (IPC)H01L39/12 +1 more
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.