US Patent Class 250
RADIANT ENERGY-- Main Headings



Electronic
File
Wrappers

Electronic
Patent
Documents

Paper
Patent
Documents

Current as of: June, 1999
Click for All Classes

Internet Version by PATENTEC © 1999       Terms of Use



Products
and
Services

CLASS NOTES
250  DF  RADIO AND MICROWAVE ABSORPTION WAVEMETERS
251  DF  ELECTRICALLY NEUTRAL MOLECULAR OR ATOMIC BEAM DEVICES AND METHODS
252.1  DF  CALIBRATION OR STANDARDIZATION METHODS
253  DF  GEOLOGICAL TESTING OR IRRADIATION {3}
271  DF  CODED RECORD AND READERS; INVISIBLE RADIANT ENERGY TYPE
281  DF  IONIC SEPARATION OR ANALYSIS {7}
301  DF  METHODS OF DETERMINING OIL PRESENCE, CONTAMINATION OR CONCENTRATION
302  DF  RADIATION TRACER METHODS {1}
304  DF  METHODS INCLUDING SEPARATION OR NONRADIANT TREATMENT OF TEST MATERIALS
305  DF  ELECTRON ENERGY ANALYSIS
306  DF  INSPECTION OF SOLIDS OR LIQUIDS BY CHARGED PARTICLES {6}
315.3  DF  SOURCE WITH CHARGED PLATE-TYPE DETECTOR
316.1  DF  WITH INFRARED OR THERMAL PATTERN RECORDING {1}
324  DF  CORONA IRRADIATION {2}
580  DF  SOURCE WITH RECORDING DETECTOR {2}
328  DF  AUTOMATIC/SERIAL DETECTION OF SIMILAR SOURCES
329  DF  RECORD PROJECTORS
330  DF  INFRARED-TO-VISIBLE IMAGING {4}
335  DF  CLOUD OR BUBBLE CHAMBERS
336.1  DF  INVISIBLE RADIANT ENERGY RESPONSIVE ELECTRIC SIGNALLING {16}
200  DF  PHOTOCELLS; CIRCUITS AND APPARATUS {11}
396 R  DF  WITH CHARGED PARTICLE BEAM DEFLECTION OR FOCUSSING {3}
423 R  DF  ION GENERATION {6}
428  DF  FLUENT MATERIAL CONTAINMENT, SUPPORT OR TRANSFER MEANS {4}
453.11  DF  SUPPORTED FOR NONSIGNALLING OBJECTS OF IRRADIATION (E.G., WITH CONVEYOR MEANS) {1}
458.1  DF  LUMINOPHOR IRRADIATION {3}
472.1  DF  INVISIBLE RADIATION RESPONSIVE NONELECTRIC SIGNALLING {4}
489  DF  ION COLLECTORS
491.1  DF  MEANS TO ALIGN OR POSITION AN OBJECT RELATIVE TO A SOURCE OR DETECTOR
492.1  DF  IRRADIATION OF OBJECTS OR MATERIAL {2}
493.1  DF  RADIANT ENERGY GENERATION AND SOURCES {3}
505.1  DF  RADIATION CONTROLLING MEANS {2}
522.1  DF  SOURCE SUPPORTS
526  DF  MISCELLANEOUS
******************************
CROSS-REFERENCE ART COLLECTIONS
******************************
900  DF  OPTICAL LIQUID LEVEL SENSORS {2}
909  DF  METHODS AND APPARATUS ANCILLARY TO STIMULABLE PHOSPHOR SYSTEMS
910  DF  FOOD SAMPLE ANALYSIS USING INVISIBLE RADIANT ENERGY SOURCE
******************************
DIGESTS
******************************
DIG 1  DF  Passive intrusion detectors
DIG 2  DF  Radon detection