US PATENT SUBCLASS 378 / 156
.~ Filter

Current as of: June, 1999
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378 /   HD   X-RAY OR GAMMA RAY SYSTEMS OR DEVICES

145  DF  BEAM CONTROL {6}
156.~ Filter {3}
157  DF  .~.~> Plural
158  DF  .~.~> Single filter with plural elements
159  DF  .~.~> Contoured

DEFINITION

Classification: 378/156

Filter:

(under subclass 145) Subject matter including means which allows the passage therethrough of X-rays of selected energy or intensity.

(1) Note. A single filter may allow the passage of photons having different energies at different portions thereof.

SEE OR SEARCH THIS CLASS, SUBCLASS:

5, for computerized tomography using energy discrimination.

49, for spatially dispersive energy analysis of the X-ray fluorescence of an analyte.

82+, for spatial energy dispersion analysis.