US PATENT SUBCLASS 600 / 437
.~.~ Ultrasonic

Current as of: June, 1999
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600 /   HD   SURGERY

300  DF  DIAGNOSTIC TESTING {38}
407  DF  .~ Detecting nuclear, electromagnetic, or ultrasonic radiation {11}
437.~.~ Ultrasonic {10}
438  DF  .~.~.~> Used as an indicator of another parameter (e.g., temperature, pressure, viscosity)
439  DF  .~.~.~> With therapeutic device
440  DF  .~.~.~> Plural display mode systems {1}
442  DF  .~.~.~> Tissue attenuation or impedance measurement or compensation
443  DF  .~.~.~> Anatomic image produced by reflective scanning {3}
448  DF  .~.~.~> Through-transmission (e.g., time-of-flight) imaging
449  DF  .~.~.~> One-dimensional anatomic display or measurement {3}
453  DF  .~.~.~> Doppler effect (e.g., fetal HR monitoring) {1}
458  DF  .~.~.~> Contrast enhancement
459  DF  .~.~.~> Structure of transducer or probe assembly {3}

DEFINITION

Classification: 600/437

Ultrasonic:

(under subclass 407) Methods and apparatus wherein the radiation applied to the body consists of a vibratory acoustic frequency or sound wave produced by a transducer which causes a disturbance in the pressure and density of a fluid, or in the elastic strain in a solid, and has a frequency higher than that detectable by the human ear.

SEE OR SEARCH THIS CLASS, SUBCLASS:

528, for heart sound detection.

SEE OR SEARCH CLASS

73, Measuring and Testing,

584, 648 for mechanical wave testing apparatus and methods where no structure particularly adapted for placement on or in the body is claimed and where a patent discloses general utility in addition to surgical utility.

181, Acoustics,

101+, for geophysical or subsurface exploration involving mechanically transmitting or receiving sound waves, subclass 123 for mechanical sound echo systems in general and subclass 125 for mechanical sound location means. 367, Communications, Electrical: Acoustic Wave Systems and Devices,

87, subclasses 7+ for producing images of the body subclasses 118+, for electrical systems using compressional waves to determine distance or direction and subclasses 14+, for electrical systems using compressional waves to investigate geologic or subsurface structure.