US PATENT SUBCLASS 257 / 659
WITH SHIELDING (E.G., ELECTRICAL OR MAGNETIC SHIELDING, OR FROM ELECTROMAGNETIC RADIATION OR CHARGE PARTICLES)

Current as of: June, 1999
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257 /   HD   ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES)

659WITH SHIELDING (E.G., ELECTRICAL OR MAGNETIC SHIELDING, OR FROM ELECTROMAGNETIC RADIATION OR CHARGE PARTICLES) {1}
660  DF  .~> With means to shield device contained in housing or package from charged particles (e.g., alpha particles) or highly ionizing radiation (i.e., hard X-rays or shorter wavelength)

DEFINITION

Classification: 257/659

WITH SHIELDING (E.G., ELECTRICAL OR MAGNETIC SHIELDING, OR FROM ELECTROMAGNETIC RADIATION OR CHARGED PARTICLES):

(under the class definition) Subject matter in which means is provided for protecting an active solid-state device by providing a barrier to prevent electrical or magnetic radiation or fields or charged particles from reaching the device, or to limit the amount of such radiation or particles reaching the device.

(1) Note. This subject matter is to be distinguished from that found in the cross-reference art collection entitled "radiation hardening", which encompasses subject matter which does not attempt to shield the device from electric or magnetic or electromagnetic radiation or charged particles, but is used to prevent or limit the damage caused to a device by such radiation or particles which reach the device.

SEE OR SEARCH THIS CLASS, SUBCLASS:

297, for shielding against alpha particles in dynamic random access memory (DRAM) structures.

422, for magnetic field shielding in magnetic field sensor active solid-state devices.

435, for light shields in light responsive active solid-state devices.

SEE OR SEARCH CLASS

174, Electricity: Conductors and Insulators, 32+, for miscellaneous anti-inductive structures, particularly indented subclasses 35+ for miscellaneous electrical shields and screen structures not elsewhere

classifiable.

307, Electrical Transmission or Interconnection Systems,

91, for anti-induction or coupling to other systems with magnetic or electrostatic field control (e.g., shielding).

315, Electric Lamp and Discharge Devices: Systems,

85, for gaseous tube systems with electromagnetic wave radiation prevention or shielding means.

330, Amplifiers,

68, for amplifiers with shielding means.

331, Oscillators,

67, for oscillators combined with electromagnetic or electrostatic shield means.

333, Wave Transmission Lines and Networks,

12, for transmission line inductive or radiation interference systems. 334, Tuners,

85, for radio tuners with shielding means.

336, Inductor Devices,

84, for induction devices with electric or magnetic shield means.

338, Electrical Resistors,

64, for electrical resistors with electrical shield means.

343, Communications: Radio Wave Antennas,

841+, for antenna structure with electric shield means.

348, Television,

825+, a for cathode-ray tube support and 836+ for cabinet or chassis of a television receiver in general.

361, Electricity: Electrical Systems and Devices,

816+, for radio interference type shielding means.