US PATENT SUBCLASS 505 / 191
.~ Semiconductor thin film device or thin film electric solid-state device or system (i.e., active or passive)

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

150  DF  HIGH TEMPERATURE (Tc GREATER THAN 30 K) DEVICES, SYSTEMS, APPARATUS, COM- PONENTS, OR STOCK, OR PROCESSES OF USING {26}
191.~ Semiconductor thin film device or thin film electric solid-state device or system (i.e., active or passive) {2}
192  DF  .~.~> Capacitor or including capacitor
193  DF  .~.~> Superconducting transistor (e.g., Josephson transistor, etc.)

DEFINITION

Classification: 505/191

Semiconductor thin film device or thin film electric solid-state device or system (i.e., active or passive):

(under subclass 150) Device or system comprising an active or passive semiconductor or thin film electric solid-state device, or processes of using the same.

(1) Note. An active or passive semiconductor or thin film electric solid-state device may be involved as a component in other devices or systems provided in subclasses 100 through 190 and 200+.

(2) Note. Reciting the composition of layers will not be sufficient for placement in this subclass unless a function of a layer other than merely conducting, insulating, supporting, or protecting is identified or unless other than layer structure is present. Moreover, superconducting layered or coiled wire, tape, cable, or fiber with or without connect, pad, or connect structure is not sufficient for this subclass.

(3) Note. One should not assume that all so-called barriers are indicative of Josephson junctions, which require a barrier sufficiently thin for tunneling of electrons. Moreover, in this art, a barrier can have other functions, such as a protective barrier to prevent poisoning or inactivation of superconductive material, as an insulative barrier, or barrier junction between semiconductors, etc.

SEE OR SEARCH THIS CLASS, SUBCLASS:

180+, for solid-state device or component (a) that is capable of being energized or modified by the application of light, (b) that permits light to pass through it, or (c) that emits light in response to passage of electrical current.

190, for Josephson junction, per se, or Josephson junction with only terminal or connect.

204, for device or system with electronic circuitry for generation of oscillations. 220, for superconductor having metal connect, pad, connect structure, or patterned superconductor circuit.

230+, for layered stock having semiconductor layer, metal layer, second superconducting layer, insulating layer, or protective layers, and a superconducting layer.

SEE OR SEARCH CLASS

257, Active Solid-State Devices (e.g., Transistors, Solid-State Diodes), for devices containing low temperature superconducting material.

307, Electrical Transmission or Interconnection Systems, particularly

462, and 476 for low temperature superconductor devices in nonlinear solid-state device, circuit, or system.

331, Oscillators,

107, for superconductive element and tunneling element oscillators.

338, Electrical Resistors,

32, for magnetic field responsive devices, including Hall effect types and low temperature superconductive devices.

365, Static Information and Storage and Retrieval, particularly 160+, for systems with a superconducting component.

377, Electrical Pulse Counters, Pulse Dividers, or Shift Registers: Circuits and Systems,

74, for input circuits involving field-effect transistors; subclasses 79 and 117 for transfer means including a field effect transistor; and subclass 93 for low temperature superconductive elements.