US PATENT SUBCLASS 438 / 48
MAKING DEVICE OR CIRCUIT RESPONSIVE TO NONELECTRICAL SIGNAL

Current as of: June, 1999
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438 /   HD   SEMICONDUCTOR DEVICE MANUFACTURING: PROCESS

48MAKING DEVICE OR CIRCUIT RESPONSIVE TO NONELECTRICAL SIGNAL {5}
49  DF  .~> Chemically responsive
50  DF  .~> Physical stress responsive {3}
54  DF  .~> Thermally responsive {1}
56  DF  .~> Responsive to corpuscular radiation (e.g., nuclear particle detector, etc.)
57  DF  .~> Responsive to electromagnetic radiation {22}

DEFINITION

Classification: 438/48

MAKING DEVICE OR CIRCUIT RESPONSIVE TO NONELECTRICAL SIGNAL:

(under the class definition) Process for making a semiconductor electrical device or circuit which is responsive to a nonelectrical input or stimuli during operation.

(1) Note. The nonelectrical signal serving as input stimulus of the device or circuit may be described as an information carrying wave.

SEE OR SEARCH CLASS

136, Batteries: Thermoelectric and Photoelectric, for active

solid-state device structures with a specified usage of generating electricity, especially

200+, for batteries which generate electricity under the action of heat and subclasses 243+ for batteries which generate electricity under the action of light; some of these batteries utilize potential barrier layers.

250, Radiant Energy,

338.4, for infrared responsive semiconductor devices for signaling, subclasses 370.01 through 370.15 for invisible radiant energy responsive semiconductor devices, subclasses 552 through 553 for photocell circuits and apparatus involving solid-state light sources, and subclasses 208.1 through 208.6 for plural photosensitive elements, including arrays. 257, Active Solid-State Devices (e.g., Transistors, Solid-State Diodes),

53, 56, 108, 414, and 467 through 470 for such devices used as temperature responsive devices; subclasses 108, 414, and 421 through 427 for devices responsive to an external magnetic field; subclasses 10, 11, 21, 53 through 56, 72, 113 through 118, 184 through 189, 225 through 234, 257, 258, 290 through 294, 414, and 431 through 466 for light responsive active semiconductor devices.

338, Electrical Resistors, especially

2, for electrical resistors of the strain gage type and subclass 22 for semiconductor thermistors.

427, Coating Processes,

74+, for coating processes which result in a photoelectric or photovoltaic product (e.g., photocathode) which is responsive to visible, infrared, or ultraviolet illumination by (a) emitting electrons, (b) generating an electromotive force, or (c) varying electrical conductivity.