Patents by Inventor Joseph R. Stetter
Joseph R. Stetter 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: 8452356Abstract: Optical microneedles are adapted for near-infrared or mid-infrared in vivo spectroscopic sensing; and provide a MEMS-based spectrometer for continuous lactate and glucose monitoring by means of a near-infrared or mid-infrared optical microneedle array in a transdermal patch.Type: GrantFiled: May 2, 2009Date of Patent: May 28, 2013Assignee: SRI InternationalInventors: Michael J. Vestel, Karen M. Nashold, Joseph R. Stetter, Diane P. Walter, Gregory W. Faris, Christopher Holland, Roger Schmidt
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Patent number: 8426932Abstract: A universal microelectromechanical (MEMS) nano-sensor platform having a substrate and conductive layer deposited in a pattern on the surface to make several devices at the same time, a patterned insulation layer, wherein the insulation layer is configured to expose one or more portions of the conductive layer, and one or more functionalization layers deposited on the exposed portions of the conductive layer to make multiple sensing capability on a single MEMS fabricated device. The functionalization layers are adapted to provide one or more transducer sensor classes selected from the group consisting of: radiant, electrochemical, electronic, mechanical, magnetic, and thermal sensors for chemical and physical variables and producing more than one type of sensor for one or more significant parameters that need to be monitored.Type: GrantFiled: October 12, 2011Date of Patent: April 23, 2013Assignee: KWJ Engineering Inc.Inventor: Joseph R. Stetter
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Patent number: 8310016Abstract: A universal microelectromechanical (MEMS) nano-sensor platform having a substrate and conductive layer deposited in a pattern on the surface to make several devices at the same time, a patterned insulation layer, wherein the insulation layer is configured to expose one or more portions of the conductive layer, and one or more functionalization layers deposited on the exposed portions of the conductive layer to make multiple sensing capability on a single MEMS fabricated device. The functionalization layers are adapted to provide one or more transducer sensor classes selected from the group consisting of: radiant, electrochemical, electronic, mechanical, magnetic, and thermal sensors for chemical and physical variables and producing more than one type of sensor for one or more significant parameters that need to be monitored.Type: GrantFiled: November 9, 2009Date of Patent: November 13, 2012Assignee: KWJ Engineering, Inc.Inventor: Joseph R. Stetter
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Publication number: 20120125772Abstract: A printed gas sensor is disclosed. The sensor may include a porous substrate, an electrode layer, a liquid or gel electrolyte layer, and an encapsulation layer. The electrode layer comprises two or more electrodes that are formed on one side of the porous substrate. The liquid or gel electrolyte layer is in electrolytic contact with the two or more electrodes. The encapsulation layer encapsulates the electrode layer and electrolyte layer thereby forming an integrated structure with the porous substrate.Type: ApplicationFiled: November 24, 2010Publication date: May 24, 2012Applicant: KWJ ENGINEERING INC.Inventors: Joseph R. Stetter, Edward F. Stetter, Daniel Ebeling, Melvin Findlay, Vinay Patel
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Patent number: 8129676Abstract: Detecting and identifying ions using surface enhanced Raman spectroscopy (SERS) and an ion separation pre-filter, such as an ion spectrometer, are provided. The combination of an ion separator as a pre-filter for SERS provides a highly sensitive detector with very low false alarm rates. Target ions from an ionized sample are identified and separated by the ion separator. The target ions are steered and deposited onto a SERS substrate for Raman spectroscopic analysis with an optical probe. The Raman spectrum is compared with reference spectra and the composition of the sample is identified. The ion current from the target ions can also be measured, preferably concurrently with the Raman spectrum measurement. Types of ion separators include a differential ion mobility spectrometer, an ion mobility spectrometer, or a mass spectrometer.Type: GrantFiled: December 17, 2007Date of Patent: March 6, 2012Assignees: SRI International, DH Technologies Development Pte. Ltd., Renishaw Diagnostics LimitedInventors: Michael Vestel, Caterina Netti, Erkinjon Nazarov, Gareth S. Dobson, Stephen L. Coy, Richard Copeland, Michael Coggiola, Lawrence Dubois, Alexander Hallock, Joseph R. Stetter
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Publication number: 20120050038Abstract: A universal microelectromechanical (MEMS) nano-sensor platform having a substrate and conductive layer deposited in a pattern on the surface to make several devices at the same time, a patterned insulation layer, wherein the insulation layer is configured to expose one or more portions of the conductive layer, and one or more functionalization layers deposited on the exposed portions of the conductive layer to make multiple sensing capability on a single MEMS fabricated device. The functionalization layers are adapted to provide one or more transducer sensor classes selected from the group consisting of: radiant, electrochemical, electronic, mechanical, magnetic, and thermal sensors for chemical and physical variables and producing more than one type of sensor for one or more significant parameters that need to be monitored.Type: ApplicationFiled: October 12, 2011Publication date: March 1, 2012Applicant: KWJ ENGINEERING INC.Inventor: Joseph R. Stetter
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Patent number: 8105539Abstract: Chemical sensors whose active element exhibits both a visual change in color and a measurable change in electrical resistance when exposed to an analyte to which it selectively reacts are provided. These sensor have several unique features including vastly improved stability measured in years, irreversible visual changes and surprisingly reversible electrical changes. The combined unique features enable a new generation of ultra low power alerting, alarming and readout devices for hydrazines and other strongly reducing chemicals.Type: GrantFiled: August 21, 2007Date of Patent: January 31, 2012Assignee: KWJ EngineeringInventors: William J. Buttner, Joseph R. Stetter
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Publication number: 20110266429Abstract: Detecting and identifying ions using surface enhanced Raman spectroscopy (SERS) and an ion separation pre-filter, such as an ion spectrometer, are provided. The combination of an ion separator as a pre-filter for SERS provides a highly sensitive detector with very low false alarm rates. Target ions from an ionized sample are identified and separated by the ion separator. The target ions are steered and deposited onto a SERS substrate for Raman spectroscopic analysis with an optical probe. The Raman spectrum is compared with reference spectra and the composition of the sample is identified. The ion current from the target ions can also be measured, preferably concurrently with the Raman spectrum measurement. Types of ion separators include a differential ion mobility spectrometer, an ion mobility spectrometer, or a mass spectrometer.Type: ApplicationFiled: December 17, 2007Publication date: November 3, 2011Inventors: Michael Vestel, Caterina Netti, Erkinjon Nazarov, Gareth S. Dobson, Stephen L. Coy, Richard Copeland, Michael Coggiola, Lawrence Dubois, Alexander Hallock, Joseph R. Stetter
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Patent number: 7911010Abstract: A universal microelectromechanical MEMS nano-sensor platform having a substrate and conductive layer deposited in a pattern on the surface to make several devices at the same time, a patterned insulation layer, wherein the insulation layer is configured to expose one or more portions of the conductive layer, and one or more functionalization layers deposited on the exposed portions of the conductive layer. The functionalization layers are adapted to provide one or more transducer sensor classes selected from the group consisting of: radiant, electrochemical, electronic, mechanical, magnetic, and thermal sensors for chemical and physical variables.Type: GrantFiled: July 17, 2007Date of Patent: March 22, 2011Assignee: KWJ Engineering, Inc.Inventor: Joseph R. Stetter
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Publication number: 20100137731Abstract: A capnometer adaptor includes a nanostructure sensor configured to selectively respond to a gaseous constituent of exhaled breath, such as to carbon dioxide. In certain embodiments, the adaptor includes an airway adaptor having at least one channel configured for the passage of respiratory gas; at least one nanostructure sensor in fluid communication with the passage, the sensor configured to selectively respond to at least one gaseous constituent of exhaled breath comprising carbon dioxide; and electronic hardware connected to the nanostructure sensor and configured to provide a signal indicative of a response of the sensor to the at least one gaseous constituent of exhaled breath. The sensor may be provided as a compact and solid-state device, and may be adapted for a variety of respiratory monitoring applications.Type: ApplicationFiled: June 16, 2009Publication date: June 3, 2010Applicant: Nanomix, Inc.Inventors: Alexander Star, Jeffery Wyatt, Vikram Joshi, Joseph R. Stetter, George Gruner
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Publication number: 20100121163Abstract: Optical microneedles are adapted for near-infrared or mid-infrared in vivo spectroscopic sensing; and provide a MEMS-based spectrometer for continuous lactate and glucose monitoring by means of a near-infrared or mid-infrared optical microneedle array in a transdermal patch.Type: ApplicationFiled: May 2, 2009Publication date: May 13, 2010Inventors: Michael J. Vestel, Karen M. Nashold, Joseph R. Stetter, Diane P. Walter, Gregory W. Faris, Chistopher Holland, Roger Schmidt
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Publication number: 20100060465Abstract: A universal microelectromechanical (MEMS) nano-sensor platform having a substrate and conductive layer deposited in a pattern on the surface to make several devices at the same time, a patterned insulation layer, wherein the insulation layer is configured to expose one or more portions of the conductive layer, and one or more functionalization layers deposited on the exposed portions of the conductive layer to make multiple sensing capability on a single MEMS fabricated device. The functionalization layers are adapted to provide one or more transducer sensor classes selected from the group consisting of: radiant, electrochemical, electronic, mechanical, magnetic, and thermal sensors for chemical and physical variables and producing more than one type of sensor for one or more significant parameters that need to be monitored.Type: ApplicationFiled: November 9, 2009Publication date: March 11, 2010Applicant: KWJ Engineering, Inc.Inventor: Joseph R. Stetter
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Patent number: 7547931Abstract: A capnometer adaptor includes a nanostructure sensor configured to selectively respond to a gaseous constituent of exhaled breath, such as to carbon dioxide. In certain embodiments, the adaptor includes an airway adaptor having at least one channel configured for the passage of respiratory gas; at least one nanostructure sensor in fluid communication with the passage, the sensor configured to selectively respond to at least one gaseous constituent of exhaled breath comprising carbon dioxide; and electronic hardware connected to the nanostructure sensor and configured to provide a signal indicative of a response of the sensor to the at least one gaseous constituent of exhaled breath. The sensor may be provided as a compact and solid-state device, and may be adapted for a variety of respiratory monitoring applications.Type: GrantFiled: December 20, 2004Date of Patent: June 16, 2009Assignee: Nanomix, Inc.Inventors: Alexander Star, Jeffrey Wyatt, Vikram Joshi, Joseph R. Stetter, George GrĂ¼ner
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Publication number: 20090053104Abstract: Chemical sensors whose active element exhibits both a visual change in color and a measurable change in electrical resistance when exposed to an analyte to which it selectively reacts are provided. These sensor have several unique features including vastly improved stability measured in years, irreversible visual changes and surprisingly reversible electrical changes. The combined unique features enable a new generation of ultra low power alerting, alarming and readout devices for hydrazines and other strongly reducing chemicals.Type: ApplicationFiled: August 21, 2007Publication date: February 26, 2009Applicant: KWJ ENGINEERINGInventors: William J. Buttner, Joseph R. Stetter
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Patent number: 7060652Abstract: A liquid electrode mixture for use in a gas sensor having from about 60 to about 240 milligrams of platinum black catalyst; from about 900 to about 1100 milligrams of water; from about 300 to about 400 microliters of 1-propanol; and from about 100 microliters to about 150 microliters of a polymer mixture comprising from about 40% to about 80% PTFE by weight and water.Type: GrantFiled: November 15, 2005Date of Patent: June 13, 2006Assignees: OmegaPoint Systems, LLC, Transducer Technology, Inc.Inventors: Edward L. Gollar, III, Joseph R. Stetter, Nathan Schattke
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Patent number: 6701776Abstract: A monitoring system for chemical shipments having an apparatus for detection of a leak from a shipment vessel having a shroud. A first chemical sensor is in communication with a chamber of the shroud for detecting the presence of a substance leaking from the vessel. A second sensor is in communication with the ambient environment surrounding the shroud. A monitoring circuit in communication with the first chemical sensor and the second chemical sensor monitors a first chemical sensor output and a second chemical sensor output and signals an information unit dependant on the increase of at least one of the first and second chemical sensors. The information unit emits a signal to an alarm or output device in response to an increase of the magnitude and/or rate of increase of at least one of the first chemical sensor output and the second chemical sensor output. A physical sensor can be in combination with the monitoring circuit.Type: GrantFiled: July 12, 2002Date of Patent: March 9, 2004Assignee: Illinois Institute of TechnologyInventor: Joseph R. Stetter
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Publication number: 20040007050Abstract: A monitoring system for chemical shipments having an apparatus for detection of a leak from a shipment vessel having a shroud. A first chemical sensor is in communication with a chamber of the shroud for detecting the presence of a substance leaking from the vessel. A second sensor is in communication with the ambient environment surrounding the shroud. A monitoring circuit in communication with the first chemical sensor and the second chemical sensor monitors a first chemical sensor output and a second chemical sensor output and signals an information unit dependant on the increase of at least one of the first and second chemical sensors. The information unit emits a signal to an alarm or output device in response to an increase of the magnitude and/or rate of increase of at least one of the first chemical sensor output and the second chemical sensor output. A physical sensor can be in combination with the monitoring circuit.Type: ApplicationFiled: July 12, 2002Publication date: January 15, 2004Inventor: Joseph R. Stetter
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Patent number: 5567301Abstract: A biosensor comprising a substrate material, at least one antibody covalently immobilized on the substrate material, and a pair of metal contact electrodes for measuring the impedance of the biosensor. A process for producing a biosensor in accordance with this invention as well as a process for utilizing the biosensor are also disclosed.Type: GrantFiled: March 1, 1995Date of Patent: October 22, 1996Assignees: Illinois Institute of Technology, United States of AmericaInventors: Joseph R. Stetter, Peter J. Hesketh, Steven M. Gendel, G. Jordan Maclay
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Patent number: 5512882Abstract: Apparatus for the detection of a vapor of a selected chemical substance includes a sensor whose impedance changes upon exposure to such a vapor. The sensor comprises a polymer whose physical structure is altered by the vapor, e.g., through expansion or disintegration, and electrically conductive elements that are interspersed with or separated by the polymer. The interspersed elements may consist of a fine powder of carbon or of a metal in a matrix of silicone or other vapor-sensitive polymer. The electrical contacts between the powder particles are weakened when the polymer swells or disintegrates, which results in increased resistance. Alternatively, the capacitance between two conductive layers separated by a polymer layer decreases, and hence the impedance increases, when the polymer swells upon exposure to the vapor. In yet another embodiment, the polymer exerts a stress on a piezoresistive element and the stress is increased when the polymer swells, which causes a further increase in resistance.Type: GrantFiled: August 7, 1991Date of Patent: April 30, 1996Assignee: Transducer Research, Inc.Inventors: Joseph R. Stetter, G. Jordan Maclay
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Patent number: 5494826Abstract: A microcalorimeter includes instrumentation for reducing measurement errors due to system fluctuations. One or more sensors is utilized to detect heat content of a sample gas, and create a composition independent system. Instrumentation for automatically compensating for pressure and temperature variations is also employed in the microcalorimeter. A method for continuously measuring the BTU content of a gas utilizing the microcalorimeter includes steps for adjusting system parameters in response to changes in ambient conditions and sample gas composition to further reduce measurement error.Type: GrantFiled: April 18, 1994Date of Patent: February 27, 1996Assignee: Gas Research Institute, Inc.Inventors: Joseph R. Stetter, G. Jorgan Maclay