US PATENT SUBCLASS 257 / 33
.~.~.~.~ High temperature (i.e., >30 Kelvin)

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


257 /   HD   ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES)

9  DF  THIN ACTIVE PHYSICAL LAYER WHICH IS (1) AN ACTIVE POTENTIAL WELL LAYER THIN ENOUGH TO ESTABLISH DISCRETE QUANTUM ENERGY LEVELS OR (2) AN ACTIVE BARRIER LAYER THIN ENOUGH TO PERMIT QUANTUM MECHANICAL TUNNELING OR (3) AN ACTIVE LAYER THIN ENOUGH TO PERMIT CARRIER TRANSMISSION WITH SUBSTANTIALLY NO SCATTERING (E.G., SUPERLATTICE, QUANTUM WELL, OR BALLISTIC TRANSPORT DEVICE) {5}
30  DF  .~ Tunneling through region of reduced conductivity {3}
31  DF  .~.~ Josephson {4}
32  DF  .~.~.~ Particular electrode material {1}
33.~.~.~.~ High temperature (i.e., >30 Kelvin)

DEFINITION

Classification: 257/33

High temperature (i.e., >30 deg. Kelvin):

(under subclass 32) Subject matter wherein the device can operate at temperatures above 30 degrees on the Kelvin temperature scale.

SEE OR SEARCH CLASS

505, Superconductor Technology: Apparatus, Material, Process,

1, for high temperature superconductor materials and devices.