US PATENT SUBCLASS 505 / 873
.~ Active solid-state device: (Class 257)

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

825  DF  APPARATUS, PER SE, DEVICE, PER SE, OR PROCESS OF MAKING OR OPERATING SAME {36}
873.~ Active solid-state device: (Class 257) {2}
874  DF  .~.~> With Josephson junction (e.g., SQUID, etc.): (Class 257)
875  DF  .~.~> Combined with housing and cryogenic fluid cooling: (Class 257)

DEFINITION

Classification: 505/873

Active solid state device: (Class 257):

(under subclass 825) Subject matter wherein a superconductive material forms a part of a solid state device such as a transistor or diode.

(1) Note. Active devices include transistors and diodes but

exclude impedance only devices such as resistors, capacitors, and inductors, which are considered to be passive devices.