US PATENT SUBCLASS 505 / 775
HIGH Tc (ABOVE 30 K) SUPERCONDUCTING MATERIAL

Current as of: June, 1999
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505 /   HD   SUPERCONDUCTOR TECHNOLOGY: APPARATUS, MATERIAL, PROCESS

775HIGH Tc (ABOVE 30 K) SUPERCONDUCTING MATERIAL {3}
776  DF  .~> Containing transition metal oxide with rare earth or alkaline earth {4}
784  DF  .~> Bismuth(Bi)-(e.g., BaKBi0)
785  DF  .~> Composition containing superconducting material and diverse nonsuperconducting material

DEFINITION

Classification: 505/775

HIGH Tc (ABOVE 30 K) SUPERCONDUCTING MATERIAL:

(under the class definition) Art collection containing a superconducting compound or composition having a superconducting transition temperature greater than 30 K or a precursor therefor.

(1) Note. A physical mixture of diverse material with the superconducting compound or composition is provided herein under in subclass 785. If diverse material is incorporated into the superconducting crystalline structure (i.e., doping), the inclusion thereof in the microstructure will not be considered, for the purpose of classification a physical mixture, and proper classification will go to the subclasses

above 785. In essence, doped superconducting material will be considered a superconducting composition if it retains superconductivity.