US PATENT SUBCLASS 326 / 3
.~.~ Josephson tunneling device

Current as of: June, 1999
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326 /   HD   ELECTRONIC DIGITAL LOGIC CIRCUITRY

1  DF  SUPERCONDUCTOR (E.G., CRYOGENIC, ETC.) {2}
2  DF  .~ Tunneling device {2}
3.~.~ Josephson tunneling device {2}
4  DF  .~.~.~> Plural devices (e.g., distributive device, etc.)
5  DF  .~.~.~> Interference device (i.e., SQUID)

DEFINITION

Classification: 326/3

Josephson tunneling device:

(under subclass 2) Subject matter including an electronic fast-switching device, known as a Josephson junction device, which permits conduction through a thin dielectric insulating layer by quantum mechanical tunneling.

(1) Note. The operation of a Josephson tunneling device is based on a theoretical consideration, that if two superconductors are brought close enough together, a current will flow across the gap between them. Under certain conditions, a voltage appears across the gap, and a high frequency radiation emanates from the gap.

SEE OR SEARCH CLASS

327, Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,

367, for Josephson junction gating circuits.