Patents by Inventor John C. Berends, Jr.
John C. Berends, Jr. has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8308339Abstract: An extremely dilute mixture of a liquid in a flowing fluid stream is prepared by forming tiny droplets of the liquid and injecting the droplets individually into the flowing stream. The rate at which liquid is added to the flowing stream is determined by the number of droplet forming units that are provided and upon the frequency with which the units are activated, allowing a precise digital control of the concentration of the liquid in the flowing fluid stream.Type: GrantFiled: January 31, 2012Date of Patent: November 13, 2012Assignee: Science Applications International CorporationInventors: Timothy P. Karpetsky, John C. Berends, Jr.
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Publication number: 20120132669Abstract: An extremely dilute mixture of a liquid in a flowing fluid stream is prepared by forming tiny droplets of the liquid and injecting the droplets individually into the flowing stream. The rate at which liquid is added to the flowing stream is determined by the number of droplet forming units that are provided and upon the frequency with which the units are activated, allowing a precise digital control of the concentration of the liquid in the flowing fluid stream.Type: ApplicationFiled: January 31, 2012Publication date: May 31, 2012Inventors: Timothy P. Karpetsky, John C. Berends, JR.
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Patent number: 8123396Abstract: An extremely dilute mixture of a liquid in a flowing fluid stream is prepared by forming tiny droplets of the liquid and injecting the droplets individually into the flowing stream. The rate at which liquid is added to the flowing stream is determined by the number of droplet forming units that are provided and upon the frequency with which the units are activated, allowing a precise digital control of the concentration of the liquid in the flowing fluid stream.Type: GrantFiled: May 16, 2008Date of Patent: February 28, 2012Assignee: Science Applications International CorporationInventors: Timothy P. Karpetsky, John C. Berends, Jr.
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Patent number: 8008617Abstract: Ions carried in a flowing gas stream are transferred to another gas stream of different composition or purity through an ion selective aperture communicating between the gas streams. The ion selective aperture is formed of a central layer which has an electrically conductive layer on each of its surfaces. One or more open channels extend through the central layer and surface layers allowing physical movement of ions therethrough under the urging and influence of an electric field created by imposing a voltage differential between the conductive surface layers of the ion selective aperture. The gas flow rates of the different gas streams may be independently varied to allow adjustment of ion concentration and flow rate to meet the needs of the ion destination. This device can control sample ion introduction into gas-phase ion detectors, such as ion mobility analyzers, differential mobility analyzers, mass spectrometers, and combinations thereof.Type: GrantFiled: December 29, 2008Date of Patent: August 30, 2011Assignee: Science Applications International CorporationInventors: John C. Berends, Jr., Timothy P. Karpetsky, Ross C. Willoughby, Edward W. Sheehan
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Patent number: 7576322Abstract: A system for the non-contact detection of analyte chemicals, including explosives, chemical warfare agents and the like, employs a non-equilibrium plasma that is maintained at a temperature sufficiently low so as to avoid thermal damage to a surface, such as clothing or skin, that is being examined to thereby produce analyte ions and other charged particles. The ions are collected and passed into a sensor for detection and identification.Type: GrantFiled: November 8, 2006Date of Patent: August 18, 2009Assignee: Science Applications International CorporationInventors: Timothy P. Karpetsky, John C. Berends, Jr.
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Patent number: 7569812Abstract: An improved ion source and means for collecting and focusing dispersed gas-phase ions from a remote reagent chemical ionization source (R2CIS) at atmospheric or intermediate pressure is described. The R2CIS is under electronic control and can produce positive, negative, or positive and negative reagent ions simultaneously. This remote source of reagent ions is separated from a low-field sample ionization region by a stratified array of elements, each element populated with a plurality of openings, wherein DC potentials are applied to each element necessary for transferring reagent ions from the R2CIS into the low-field sample ionization region where the reagent ions react with neutral and/or ionic sample forming sample ionic species. The resulting sample ionic species are then introduced into a mass spectrometer, ion mobility spectrometer or other sensor capable of detecting the sample ions.Type: GrantFiled: October 7, 2006Date of Patent: August 4, 2009Assignee: Science Applications International CorporationInventors: Timothy P. Karpetsky, John C. Berends, Jr., Edward W. Sheehan, Ross C. Willoughby
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Patent number: 7568401Abstract: A sorbent-filled sample tube is mounted to an aspirating source using a sample tube holder that includes a compression fitting having a fitting body, a cap, and a ferrule. The fitting cap is extended as a torque tube that surrounds the sample tube and has a length approximately equal to that of the sample tube to thereby protect the sample tube from damage. The free end of the torque tube is formed as a thumb wheel for ease in inserting and removing the sample tube without the use of a wrench or other tool.Type: GrantFiled: June 19, 2006Date of Patent: August 4, 2009Assignee: Science Applications International CorporationInventor: John C. Berends, Jr.
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Patent number: 7073403Abstract: A system for the collection of near real time confirmation samples is provided to quickly eliminate false positive alarms by confirming the presence or absence of a chemical agent when a monitor operating in near real time to detect the presence of that chemical agent generates an alarm. The confirmation sampling system is synchronized with the near real time monitor and the confirmation sampler and monitor draw common samples of the atmosphere of concern. In the event that the monitor generates an alarm, the confirmation sampler preserves the sample taken contemporaneously with the alarm event for separate analysis, and also takes and preserves one or more follow-on samples.Type: GrantFiled: November 15, 2004Date of Patent: July 11, 2006Assignee: EAI CorporationInventors: Thomas G. Albro, John C. Berends, Jr.
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Patent number: 6819253Abstract: A system for the collection of near real time confirmation samples is provided to quickly eliminate false positive alarms by confirming the presence or absence of a chemical agent when a monitor operating in near real time to detect the presence of that chemical agent generates an alarm. The confirmation sampling system is synchronized with the near real time monitor and the confirmation sampler and monitor draw common samples of the atmosphere of concern. In the event that the monitor generates an alarm, the confirmation sampler preserves the sample taken contemporaneously with the alarm event for separate analysis, and also takes and preserves one or more follow-on samples.Type: GrantFiled: October 3, 2002Date of Patent: November 16, 2004Assignee: EAI CorporationInventors: Thomas G. Albro, John C. Berends, Jr.
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Patent number: 6321609Abstract: A gas sampling system includes a sample trapping module having a gas pump and a power supply, and a removable magazine that fits within a port of the trapping module. The magazine contains a non-volatile electronic memory, which controls operation of the trapping module, and has a rotating carousel for holding sample tubes. Individual sample tubes are sealed at each end by a cap that has a needle-pierceable septum, and contain a solid collector material to trap chemical and biological contaminants in a gas sample drawn through the sample tube. Individual sample tubes are moved into and out of a sampling location by incremental rotation of the carousel and, while at the sampling location, a pair of hollow bore needles are inserted through the sample tube end caps to allow the drawing of a gas sample through the tube.Type: GrantFiled: November 14, 2000Date of Patent: November 27, 2001Assignee: EAI CoporationInventors: R. William Mengel, Thomas G. Albro, John C. Berends, Jr., Robert S. Marshall, Christopher D. Sloop
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Patent number: 6272937Abstract: A gas sampling system includes a sample trapping module having a gas pump and a power supply, and a removable magazine that fits within a port of the trapping module. The magazine contains a non-volatile electronic memory, which controls operation of the trapping module, and has a rotating carousel for holding sample tubes. Individual sample tubes are sealed at each end by a cap that has a needle-pierceable septum, and contain a solid collector material to trap chemical and biological contaminants in a gas sample drawn through the sample tube. Individual sample tubes are moved into and out of a sampling location by incremental rotation of the carousel and, while at the sampling location, a pair of hollow bore needles are inserted through the sample tube end caps to allow the drawing of a gas sample through the tube.Type: GrantFiled: November 14, 2000Date of Patent: August 14, 2001Assignee: EAI CorporationInventors: R. William Mengel, Thomas G. Albro, John C. Berends, Jr., Robert S. Marshall, Christopher D. Sloop
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Patent number: 6244117Abstract: A gas sampling system includes a sample trapping module having a gas pump and a power supply, and a removable magazine that fits within a port of the trapping module. The magazine contains a non-volatile electronic memory, which controls operation of the trapping module, and has a rotating carousel for holding sample tubes. Individual sample tubes are sealed at each end by a cap that has a needle-pierceable septum, and contain a solid collector material to trap chemical and biological contaminants in a gas sample drawn through the sample tube. Individual sample tubes are moved into and out of a sampling location by incremental rotation of the carousel and, while at the sampling location, a pair of hollow bore needles are inserted through the sample tube end caps to allow the drawing of a gas sample through the tube.Type: GrantFiled: November 14, 2000Date of Patent: June 12, 2001Assignee: EAT CorporationInventors: R. William Mengel, Thomas G. Albro, John C. Berends, Jr., Robert S. Marshall, Christopher D. Sloop
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Patent number: 6167767Abstract: A gas sampling system includes a sample trapping module having a gas pump and a power supply, and a removable magazine that fits within a port of the trapping module. The magazine contains a non-volatile electronic memory, which controls operation of the trapping module, and has a rotating carousel for holding sample tubes. Individual sample tubes are sealed at each end by a cap that has a needle-pierceable septum, and contain a solid collector material to trap chemical and biological contaminants in a gas sample drawn through the sample tube. Individual sample tubes are moved into and out of a sampling location by incremental rotation of the carousel and, while at the sampling location, a pair of hollow bore needles are inserted through the sample tube end caps to allow the drawing of a gas sample through the tube.Type: GrantFiled: October 26, 1998Date of Patent: January 2, 2001Assignee: RAI CorporationInventors: R. William Mengel, Thomas G. Albro, John C. Berends, Jr., Robert S. Marshall, Christopher D. Sloop