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Dugan, MD

Jonathan Dugan, College Park, MD US

Patent application numberDescriptionPublished
20090012875METHOD AND SYSTEM FOR FACILITATING COMMERCIAL TRANSACTIONS USING AUTOMATIC VIRTUAL CURRENCY - Provided are methods and systems for facilitating commercial transactions, such as sales, trades, or barters, using a virtual currency value. A data repository containing a list of available items is created and updated. A virtual value is assigned to each item in the data repository. Upon a match between an offer and a request for an item, the virtual value of the item is deducted from the buyer's account, and is added to the seller's account.01-08-2009

Regina E. Dugan, Rockville, MD US

Patent application numberDescriptionPublished
20090071824Integrated Sensing Array for Producing a BioFingerprint of an Analyte - An integrated array of electronic sensing elements outputs a bio-fingerprint of an analyte. System is preferably constructed of as a series of three layers but need not be so arranged. An upper layer defines a fluid volume or analyte chamber; a middle layer contains the sensing elements; and a third layer contains electronic readout elements. The analyte chamber contains an electrolyte and the analyte to be detected. The sensing elements are optimized for maximum detection sensitivity in the minimum response time. The response of each sensing element is read out by a dedicated sensing electrode. Around each electrode is a control ring. The potential of the control ring is set to attract analytes of interest to the sensing elements.03-19-2009
20100291698DETECTION OF NITRO- AND NITRATE-CONTAINING COMPOUNDS - A method of the invention is a method of detecting nitramines and nitrate esters believed to be present on a sampling substrate. In the method, a sampling substrate is exposed to a first reagent that is formulated to react with nitramine- and nitrate ester-type explosives to release nitrite. The sampling substrate is then exposed to a second reagent that contains an acid to react with the nitrite and a diaminoaromatic present in either the first or second reagent, to form a triazole that will luminesce. Another method of the invention combines this process for nitramine- and nitrate ester-based explosives detection with a technique to detect nitroaromatic-based explosives using luminescent polymers, for a three-step process for the detection of explosives in these three classes.11-18-2010

Patent applications by Regina E. Dugan, Rockville, MD US

Regina Elvira Dugan, Rockville, MD US

Patent application numberDescriptionPublished
20090219390High Throughput Security Screening System for Transportation Applications - A high throughput security screening system employed at access points of a transportation system includes a control portion, an ID portion and a screening portion. The screening portion includes a main housing, an input port provided in the main housing for receiving exhibits, sampling media positioned in the main housing that obtains a trace sample from the exhibits and a processing system for scanning the trace sample for a threat indicator. The screening system also includes a memory for storing information related to threat indicators for later processing. The memory also stores image data, time data and date data relating to each trace sample. With this arrangement, the screening system is capable of processing a high volume of exhibits while mitigating passenger inconvenience or wait times while still maintaining a high level of security.09-03-2009
20100240143Fully integrated portable screening system - A fully integrated portable screening system includes a main housing and a contact pad. The contact pad is removably positioned in the main housing and covered by at least one sample sheet. The contact pad is preferably constituted by a cylindrical baton which carries a roll of sample collection sheets. A test subject interacts with the contact pad, leaving a trace sample on the sample collection sheet. The contact pad is then placed within the main housing and the trace sample is exposed to a test medium designed to interact with a specific analyte of interest potentially present in the trace sample. After exposure to the test medium, the sample sheet is subjected to a testing mechanism which exposes any interaction between the test medium and the analyte of interest to produce a test result.09-23-2010
20100260389Interactive security screening system - An interactive security screening system includes a main housing, a contact pad provided on the main housing and a sample sheet positioned upon the contact pad. A sensor is operatively connected to the contact pad to measure pressure applied to the contact pad during a sample collection process. A feedback system, operatively connected to the contact pad and the sensor, provides the subject or screener with at least one of a visual signal and an audio signal to indicate whether requisite pressure was applied to the contact pad. A sample processing system analyzes the sample collection sheet through series, parallel or image processing to determine whether the trace residue sample contains a threat residue. The screening system also employs a spatial recognition system that focuses the sample processing system on particular portions of the sample collection sheet to increase overall system accuracy.10-14-2010
20110043788Fully Integrated Portable Screening System - A fully integrated portable screening system includes a main housing and a contact pad. The contact pad is removably positioned in the main housing and covered by at least one sample sheet. The contact pad is preferably constituted by a cylindrical baton which carries a roll of sample collection sheets. A test subject interacts with the contact pad, leaving a trace sample on the sample collection sheet. The contact pad is then placed within the main housing and the trace sample is exposed to a test medium designed to interact with a specific analyte of interest potentially present in the trace sample. After exposure to the test medium, the sample sheet is subjected to a testing mechanism which exposes any interaction between the test medium and the analyte of interest to produce a test result.02-24-2011
20110095898Interactive Security Screening System - An interactive security screening system includes a main housing, a contact or palm pad provided on the main housing and a sample sheet positioned upon the contact pad. A sensor is operatively connected to the contact pad to measure pressure applied to the contact pad during a sample collection process. A feedback system, operatively connected to the contact pad and the sensor, provides the subject or screener with at least one of a visual signal and an audio signal to indicate whether requisite pressure was applied to the contact pad. A sample processing system analyzes the sample collection sheet through series, parallel or image processing to determine whether the trace residue sample contains a threat residue. The screening system also employs a spatial recognition system that focuses the sample processing system on particular portions of the sample collection sheet to increase overall system accuracy.04-28-2011

Patent applications by Regina Elvira Dugan, Rockville, MD US