US PATENT SUBCLASS 250 / 281
IONIC SEPARATION OR ANALYSIS

Current as of: June, 1999
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250 /   HD   RADIANT ENERGY

281IONIC SEPARATION OR ANALYSIS {7}
282  DF  .~> Methods {1}
285  DF  .~> With plural, simultaneous ion generators
286  DF  .~> Ion beam pulsing means with detector synchronizing means {1}
288  DF  .~> With sample supply means
289  DF  .~> With evacuation or sealing means
290  DF  .~> Cyclically varying ion selecting field means {3}
294  DF  .~> Static field-type ion path-bending selecting means {3}

DEFINITION

Classification: 250/281

(under the class definition) Subject matter comprising (1) means to select an ion of one charge-to-mass ratio from one or more ions of a different charge-to-mass ratio and (2) means to either detect the selected ions or accumulate them, or methods for performing the functions of the means (1) and (2).

(1) Note. Combination claims including a mass Spectrometer or Calutron recited as a part of the combination will be included here and the subclasses indented hereunder even if merely nominally recited on the assumption that the nominally recited mass Spectrometer or Calutron includes (1) and (2) of the subclass definition. If the disclosure shows some other ionic separation or analysis means, the document is excluded. Claims reciting subject matter "in" or "for use in" a mass Spectrometer or Calutron are excluded from this subclass and its indents and are classified elsewhere. See Search Notes below.

(2) Note. Where the selection is on the basis of the polarity only of the ionized particles, classification here is excluded See search notes to Classes 95 and 96.

SEE OR SEARCH THIS CLASS, SUBCLASS:

396+, for ionic lens means, per se, or in combination with an ion source for separating ions according to their charge-to-mass ratios but without the detecting or accumulating means, per se.

423+, for ion sources, per se, of the class type. 489+, for ion accumulating means, per se.

SEE OR SEARCH CLASS

73, Measuring and Testing,

23.1, for the combination of a gas chromatograph and a nominally recited mass spectrometer.

95, Gas Separation: Processes, especially

27, and 28 for processes of gas separation using magnetism and subclasses 57+ for processes of gas separation using an electric or electrostatic field wherein the separation of gases and solid particles from gases is accomplished by methods other than the ionic separation of materials utilizing the charge-to-mass ratio of particles. Such gases may include the polarity or the charged status of the particles.

96, Gas Separation: Apparatus, especially

1+, for magnetic separating means for gas separation and subclasses 15+ for electric or electrostatic field separation apparatus for gas separation wherein the means to separate gases and solid particles from gases is means other than that for the ionic separation of materials utilizing the charge-to-mass ratios of particles. Such gases may include the polarity or the charged status of particles.

324, Electricity: Measuring and Testing,

459+, for electric measuring and testing devices including ionization, e.g., pressure gages.