US PATENT SUBCLASS 327 / 527
.~ Superconductive (e.g., cryogenic, etc.) device

Current as of: June, 1999
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327 /   HD   MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS

524  DF  SPECIFIC IDENTIFIABLE DEVICE, CIRCUIT, OR SYSTEM {22}
527.~ Superconductive (e.g., cryogenic, etc.) device {2}
528  DF  .~.~> Josephson junction
529  DF  .~.~> Impact ionization

DEFINITION

Classification: 327/527

Superconductive (e.g., cryogenic, etc.) device:

(under subclass 524) Subject matter including a particular circuit which operates at temperatures which are approximately absolute zero (i.e., less than or equal to 30 K) where electrical resistance becomes essentially zero.

(1) Note. Class 505 comprises superconductive devices which operate at a temperature higher than 30 K.

SEE OR SEARCH THIS CLASS, SUBCLASS:

186, for one or more stable state cryogenic circuits.

366+, for cryogenic gating or switching.

SEE OR SEARCH CLASS

326, Electronic Digital Logic Circuitry, 1+, for superconductor logic circuits.

338, Electrical Resistors,

32, for a resistive element whose resistance depends on the value of an applied magnetic field.

340, Communications: Electrical,

825.79, for matrix systems using superconductive elements.

365, Static Information Storage and Retrieval,

160+, for information storage means using superconductive elements.

505, Superconductor Technology: Apparatus, Material, Process, appropriate subclasses for superconductive devices operating above 30 K.