Patents by Inventor Jennifer L. Stepnowski
Jennifer L. Stepnowski 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: 8652853Abstract: A device having: one or more substrates in an enclosure having an inlet and an outlet; a template directed molecular imprinted material on the substrates; and a heater to heat the material. A method of: providing the above device including a sensor coupled to the outlet; flowing a gas though the device; heating the material; and flowing any vapor evolved from the material into the sensor.Type: GrantFiled: October 7, 2008Date of Patent: February 18, 2014Assignee: The United States of America, as represented by the Secretary of the NavyInventors: Michael A Markowitz, Mazyar Zeinali, R Andrew McGill, Anne W Kusterbeck, Jennifer L Stepnowski
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Patent number: 8459123Abstract: Micro-opto-mechanical chemical sensors and methods for simultaneously detecting and discriminating between a variety of vapor-phase analytes. One embodiment of the sensor is a photonic microharp chemical sensor with an array of closely spaced microbridges, each differing slightly in length and coated with a different sorbent polymer. The microbridges can be excited photothermally, and the microbridges can be optically interrogated using microcavity interferometry. Other actuation methods include piezoelectric, piezoresistive, electrothermal, and magnetic. Other read-out techniques include using a lever arm and other interferometric techniques.Type: GrantFiled: September 29, 2009Date of Patent: June 11, 2013Assignee: The United States of America, as represented by the Secretary of the NavyInventors: Todd H. Stievater, William S Rabinovich, Nicolas A Papanicolaou, Robert Bass, Jennifer L Stepnowski, R Andrew McGill
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Patent number: 8148161Abstract: Disclosed herein is a composition having: a polymer having a carbosilane or siloxane backbone and pendant hydrogen-bond acidic groups; and a filler material having polar groups. The polymer is not covalently bound to the filler material.Type: GrantFiled: May 1, 2009Date of Patent: April 3, 2012Assignee: The United States of America, as represented by the Secretary of the NavyInventors: Bernadette A. Higgins, Duane L. Simonson, Viet Nguyen, Jennifer L. Stepnowski, R Andrew McGill
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Patent number: 8132443Abstract: The present invention is generally directed to a microfabricated gas chromatograph column having two patterned substrates, each optionally having a stationary phase material coating, bonded together to provide a continuous flow channel. The flow channel can have a serpentine arrangement or a modified serpentine arrangement comprising alternating series of consecutive turns in one direction where each series has enough turns to move carrier gas and analyte molecules from the center of the column cross section to an outer wall of the channel or from one outer wall of the channel to the opposite outer wall. Different portions of the substrates can be coated with differing thicknesses of stationary phase material and/or with different stationary phase materials. The column can have a circular cross-section or a semi-circular cross-section where the flat portion of the cross-section has grooves. Also disclosed is the related method of making the microfabricated gas chromatograph column.Type: GrantFiled: May 1, 2009Date of Patent: March 13, 2012Assignee: The United States of America as represented by the Secretary of the NavyInventors: R Andrew McGill, Rekha Pai, David R. Mott, Jennifer L Stepnowski, Viet Nguyen
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Publication number: 20100139406Abstract: Micro-opto-mechanical chemical sensors and methods for simultaneously detecting and discriminating between a variety of vapor-phase analytes. One embodiment of the sensor is a photonic microharp chemical sensor with an array of closely spaced microbridges, each differing slightly in length and coated with a different sorbent polymer. The microbridges can be excited photothermally, and the microbridges can be optically interrogated using microcavity interferometry. Other actuation methods include piezoelectric, piezoresistive, electrothermal, and magnetic. Other read-out techniques include using a lever arm and other interferometric techniques.Type: ApplicationFiled: September 29, 2009Publication date: June 10, 2010Applicant: The Government of the US. as represented by the Secretary of the NavyInventors: Todd H. Stievater, William S. Rabinovich, Nicolas A. Papanicolaou, Robert Bass, Jennifer L. Stepnowski, R. Andrew McGill
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Publication number: 20100083736Abstract: A device having: one or more substrates in an enclosure having an inlet and an outlet; a template directed molecular imprinted material on the substrates; and a heater to heat the material. A method of: providing the above device including a sensor coupled to the outlet; flowing a gas though the device; heating the material; and flowing any vapor evolved from the material into the sensor.Type: ApplicationFiled: October 7, 2008Publication date: April 8, 2010Applicant: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Michael A. Markowitz, Mazyar Zeinali, R. Andrew McGill, Anne W. Kusterbeck, Jennifer L. Stepnowski
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Publication number: 20090301169Abstract: Disclosed herein is a composition having: a polymer having a carbosilane or siloxane backbone and pendant hydrogen-bond acidic groups; and a filler material having polar groups. The polymer is not covalently bound to the filler material.Type: ApplicationFiled: May 1, 2009Publication date: December 10, 2009Applicant: Naval Research LaboratoryInventors: Bernadette A. Higgins, Duane L. Simonson, Viet Nguyen, Jennifer L. Stepnowski, R. Andrew McGill
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Publication number: 20090272270Abstract: The present invention is generally directed to a microfabricated gas chromatograph column having two patterned substrates, each optionally having a stationary phase material coating, bonded together to provide a continuous flow channel. The flow channel can have a serpentine arrangement or a modified serpentine arrangement comprising alternating series of consecutive turns in one direction where each series has enough turns to move carrier gas and analyte molecules from the center of the column cross section to an outer wall of the channel or from one outer wall of the channel to the opposite outer wall. Different portions of the substrates can be coated with differing thicknesses of stationary phase material and/or with different stationary phase materials. The column can have a circular cross-section or a semi-circular cross-section where the flat portion of the cross-section has grooves. Also disclosed is the related method of making the microfabricated gas chromatograph column.Type: ApplicationFiled: May 1, 2009Publication date: November 5, 2009Inventors: R Andrew McGill, Rekha Pai, David R. Mott, Jennifer L. Stepnowski, Viet Nguyen
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Patent number: 7140265Abstract: An apparatus for collecting particles or vapor from air or surfaces comprising: a housing comprising an inlet open to the air to be sampled and an outlet; and a fan having one or more open areas within the housing capable of being driven at a speed effective to cause collection on the surface of the fan of particles or vapor in the air. A method of collecting a particulate sample from air comprising the step of driving a fan having one or more open areas within a housing comprising an inlet open to the air to be sampled and an outlet, at a speed effective to cause collection on the surface of the fan of particles in the air.Type: GrantFiled: March 6, 2003Date of Patent: November 28, 2006Assignee: The United States of America as represented by the Secretary of the NavyInventors: Robert A. McGill, Jennifer L. Stepnowski, Stanley V. Stepnowski, Viet Nguyen, Russell Chung, Eric J. Houser, Stephen C. Francesconi, Ronald L. Kelly
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Publication number: 20030230152Abstract: An apparatus for collecting particles or vapor from air or surfaces comprising: a housing comprising an inlet open to the air to be sampled and an outlet; and a fan having one or more open areas within the housing capable of being driven at a speed effective to cause collection on the surface of the fan of particles or vapor in the air. A method of collecting a particulate sample from air comprising the step of driving a fan having one or more open areas within a housing comprising an inlet open to the air to be sampled and an outlet, at a speed effective to cause collection on the surface of the fan of particles in the air.Type: ApplicationFiled: March 6, 2003Publication date: December 18, 2003Inventors: Robert A. McGill, Jennifer L. Stepnowski, Stanley V. Stepnowski, Viet Nguyen, Russell Chung, Eric J. Houser, Stephen C. Francesconi, Ronald L. Kelly