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Class Information
Number: 250/302
Name: Radiant energy > Radiation tracer methods
Description: Subject matter which includes methods of applying a material onto a surface, into a substance, into a closed or open pipe, or into a fluid, static or moving, and detecting the radiation emitted naturally or as secondary radiation as a result of irradiation of the material or a modification of radiation caused by the material for any purpose not provided for else where.

Sub-classes under this class:

Class Number Class Name Patents
250/303 Radioactive tracer methods 181

Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8629414 Clear overcoat compositions and methods for using and detecting the same Jan. 14, 2014
8517274 Data word analysis by spectroscopy Aug. 27, 2013
8501481 Methods and articles for identifying objects using encapsulated perflurocarbon tracers Aug. 6, 2013
8280130 Method to individualize kinetic parameter estimation for dynamic molecular imaging procedures Oct. 2, 2012
8247018 Methods for quality control Aug. 21, 2012
8158433 Fragmented taggant coding system and method with application to ammunition tagging Apr. 17, 2012
8153435 Methods and articles for identifying objects using encapsulated perfluorocarbon tracers Apr. 10, 2012
8147757 Filter with memory, communication and concentration sensor Apr. 3, 2012
8137983 Method of maintaining a protein concentration at a tangential flow filter Mar. 20, 2012
8103076 Method for transcatheter intra-arterial perfusion magnetic resonance imaging Jan. 24, 2012
8084259 Method of insuring the integrity of a filtering element Dec. 27, 2011
8082103 CO.sub.2 concentration correcting apparatus and CO.sub.2 concentration correcting method Dec. 20, 2011
7991214 Method to enhance X-ray and optical images and locate nano-scale cracks in electric devices and components Aug. 2, 2011
7763850 Method and device for the real-time measurement of the consumption of oil from an engine oil separation system, using radioactive tracers Jul. 27, 2010
7495214 Systems and methods for material authentication Feb. 24, 2009
7462827 Non-destructive inspection method and apparatus therefor Dec. 9, 2008
7402800 Method and device for the continuous determination of damage to systems used for the post-treatment of heat engine exhaust gases Jul. 22, 2008
7385524 Automated meter reading, billing and payment processing system Jun. 10, 2008
7323706 Method of associating meta-data relating to a radiation image of an object with the radiation image Jan. 29, 2008
7309862 Method for marking sites Dec. 18, 2007
7304300 Infrared tag and track technique Dec. 4, 2007
7291836 Method and device for continuous determination of lubricating oil consumption of an internal combustion engine Nov. 6, 2007
7256398 Security markers for determining composition of a medium Aug. 14, 2007
7214925 Pattern method and system for detecting foreign object debris May. 8, 2007
7194360 Method of determining radioactive nuclides Mar. 20, 2007
7172799 Radiation flood source and method for producing the same Feb. 6, 2007
7146295 Computerized design method and apparatus for drainage systems Dec. 5, 2006
7141811 Detection lamp equipped with light-emitting diode Nov. 28, 2006
7128812 Apparatus and method for determining the level in a coke drum Oct. 31, 2006
7126119 Method for marking sites Oct. 24, 2006
7084392 Method and apparatus for a downhole fluorescence spectrometer Aug. 1, 2006
7064309 Method for detecting foreign object debris Jun. 20, 2006
7038201 Method and apparatus for determining electrical contact wear May. 2, 2006
7031802 Semi-autonomous operation of a robotic device Apr. 18, 2006
7009198 Pattern method and system for detecting foreign object debris using a fluorescent drilling lubricant Mar. 7, 2006
6943348 System for detecting injection holding material Sep. 13, 2005
6920346 Pre-operative device for localizing marked tissues and process using such a device Jul. 19, 2005
6884998 Method and apparatus for determining electrical contact wear Apr. 26, 2005
6881953 Method of tracing drains Apr. 19, 2005
6855944 Detection lamp equipped with light-emitting diode Feb. 15, 2005
6847838 Apparatus and method for high dose rate brachytherapy radiation treatment Jan. 25, 2005
6804549 Sentinel lymph node detection method and system therefor Oct. 12, 2004
6740875 Gamma watermarking May. 25, 2004
6737645 Method for qualifying bottle rinser May. 18, 2004
6710363 Detection lamp equipped with light-emitting diode Mar. 23, 2004
6677584 Manufacturing fluid including fluorescent dye penetrant and method for using to make components Jan. 13, 2004
6677606 Dopa and dopamine modification of metal oxide semiconductors, method for attaching biological molecules to semiconductors Jan. 13, 2004
6646243 Nucleic acid reading and analysis system Nov. 11, 2003
6642529 Methods for the automated testing of reticle feature geometries Nov. 4, 2003
6630307 Method of detecting an analyte in a sample using semiconductor nanocrystals as a detectable label Oct. 7, 2003

1 2 3 4 5

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