US PATENT SUBCLASS 264 / 407
.~.~ Using sonic, supersonic, or ultrasonic energy

Current as of: June, 1999
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264 /   HD   PLASTIC AND NONMETALLIC ARTICLE SHAPING OR TREATING: PROCESSES

405  DF  DIRECT APPLICATION OF ELECTRICAL OR WAVE ENERGY TO WORK (E.G., ELECTROMAGNETIC WAVE, PARTICULATE, MAGNETIC, INDUCTION HEAT, SONIC, ELECTROSTATIC ENERGY, ETC.) {26}
406  DF  .~ Measuring, testing, or inspecting {2}
407.~.~ Using sonic, supersonic, or ultrasonic energy

DEFINITION

Classification: 264/407

Using sonic, supersonic, or ultrasonic energy:

(under subclass 406) Processes directed to utilizing wave vibrations which can be heard by the human ear.

(1) Note. Patents claiming the use of ultrasonic or supersonic frequencies (energy) are properly classified in this subclass. The term supersonic covers frequencies above the range of normal human hearing. Ultrasonic waves vibrate at frequencies beyond the hearing power of human beings (above 20,000 hertz). Sonic frequencies are vibrations which can be heard by the human ear (from about 15 hertz to approximately 20,000 hertz).

SEE OR SEARCH THIS CLASS, SUBCLASS:

69, for processes involving treatment of material by vibrating, jarring, or agitating during shaping.

442, for processes utilizing sonic energy other than measuring or testing.