Patent 4987767 Issued on January 29, 1991. Estimated Expiration Date: December 8, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
An explosive detection screening system used for the detection of explosives and other controlled substances such as drugs or narcotics. The screening system detects the vapor and/or particulate emissions from the aforementioned substances and reports that they are present on an individual or object and the concentration of each substance detected. The screening system comprises a sampling chamber for the collection of the vapor and/or particulate emissions, a concentration and analyzing system for the purification of the collected vapor and/or particulate emissions and subsequent detailed chemical analysis of the emissions, and a control and data processing system for the control of the overall system.
Other References
Romine Deming, "High Speed Detection of Plastic Explosives", May 14-16, 1986
Martin J. Cohen, et al., "The Ion Mobility Spectrometer for High Explosive Vapor Detection.
Glenn E. Spangler, et al., "Recent Advances in Ion Mobility Spectrometry for Explosive Vapor Detection"
Roger F. Wernlund, et al., "The Ion Mobility Spectrometer As An Explosive or Taggant Vapor Detector"
M. W. Siegel, "Atmospheric Pressure Ionization Mass Spectrometry for Explosives Detection and Identification"
Lorne Elias, "Recent Projects at NRC Related to Explosives Detection"
P. J. Thoma, "Explosives Vapor Preconcentrator"
Frank J. Conrad, "Explosives Detection Program at Sandia National Laboratories"
Ralph L. Schellenbaum, "Air Flow Studies for Personnel Explosives Screening Portals"
James H. Henry, "A Review of Technology for Detection of Explosives" SPIE vol. 108 (1977)
G. Seman et al., "Detection of Hidden Explosives on Passenger Aircraft Using Hand Searchers, Biosensors, and Vapor Detectors"
William A. Wall, et al., "Determination of the Sensitivity and Specificity of Vapor Detection Systems for Explosives, Narcotics and Related Compound"
Anthony Jenkins, et al., "Improved Efficiency Access Control Equipment and Explosive, Weapons and Drug Abuse Detection"
Lawrence W. Hruboch, et al., "Study of Conventional Preconcentration Techniques for Explosive Vapors
December 8, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
