Patents by Inventor Andrew Koehl
Andrew Koehl 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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Publication number: 20230009342Abstract: A maritime sulfur dioxide emissions switch monitoring system has an emissions sampling apparatus that is self-powered and requires a low power for operation. The emissions sampling apparatus has sensitive and selective chemical sensing technology capable of quantification of sulfur dioxide and carbon dioxide. Relative humidity, temperature and pressure sensors, in addition to sulfur dioxide and carbon dioxide are used for monitoring the exhaust gas. Filters are used to eliminate solid and liquid aerosolized components in marine engine exhaust.Type: ApplicationFiled: March 16, 2021Publication date: January 12, 2023Inventors: Andrew Koehl, Ashley Wilks, Robert James MacBlane, Michael W. Allen, Shannon Mackey, John M. Kulukundis
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Patent number: 9177769Abstract: An ion filter (10) for use in ion mobility spectrometry is described, together with a method for manufacturing the filter. The filter (10) is manufactured by removing portions from a monolithic structure to form a pair of electrodes which remain mechanically connected. The connecting portion (22) provides sufficient electrical impedance between the electrodes to effectively electrically separate the electrodes. The connecting portion may be doped or chemically modified to obtain a desired impedance, or this may be obtained through appropriate selection of physical dimensions.Type: GrantFiled: September 25, 2007Date of Patent: November 3, 2015Assignee: Owlstone LimitedInventors: Matthew Hart, Andrew Koehl
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Publication number: 20110250822Abstract: A toy race car track can be expanded to an unlimited number of lanes via interlocking side-by-side tracks. The toy race car track may be extended in length by adding additional track segments end-to-end. The tracks of the present invention may be useful for racing a toy race car with four wheels and a compartment for a marble in a central region of the car. With a marble installed in the car, all four wheels and the marble may roll at the same time as the car is moved. The car may be rolled on a surface or raced on the track. In some embodiments, the car may include lights that may flash as the car is moved.Type: ApplicationFiled: April 6, 2011Publication date: October 13, 2011Inventor: STEPHEN ANDREW KOEHL
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Publication number: 20110104982Abstract: A toy race car includes four wheels and a compartment for a marble in a central region of the car. With a marble installed in the car, all four wheels and the marble may roll at the same time as the car is moved. The car may be rolled on a surface or raced on a track. In some embodiments, the car may include lights that may flash as the car is moved.Type: ApplicationFiled: October 26, 2010Publication date: May 5, 2011Inventor: Stephen Andrew Koehl
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Publication number: 20110036973Abstract: The invention provides an ion pump to be used for selectively transferring ionised molecules across a barrier from a first volume to a second volume. The pump comprises an ion gate or filter separating the two volumes, the filter comprising at least one ion channel extending between the first and second spaces, the channel defined by a plurality of conductive layers separated along the length of the channel by at least one non-conductive layer; the device further comprising control means for applying an electric potential to the conductive layers such that the conductive layers act as electrodes. Other aspects of the invention relate to methods for selectively transferring ions.Type: ApplicationFiled: September 19, 2006Publication date: February 17, 2011Applicant: OWLSTONE LTDInventors: David Ruiz Alonso, Andrew Koehl, Paul Boyle, Martyn Rush, Russell Parris, Ashley Wilks
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Publication number: 20110006196Abstract: An ion mobility spectrometer is described having an ion filter in the form of at least one ion channel having a plurality of electrodes. A time-varying electric potential applied to the conductive layers allows the filler to selectively admit ion species. The electric potential has a drive and a transverse component, and in preferred embodiments each of the electrodes is involved in generating a component of both the drive and transverse fields. The device may be used without a drift gas flow. Microfabrication techniques are described for producing microscale spectrometers, as are various uses of the spectrometer.Type: ApplicationFiled: May 6, 2010Publication date: January 13, 2011Applicant: Owlstone Ltd.Inventors: Paul Boyle, Andrew Koehl, David Ruiz Alonso
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Publication number: 20100148051Abstract: An ion filter (10) for use in ion mobility spectrometry is described, together with a method for manufacturing the filter. The filter (10) is manufactured by removing portions from a monolithic structure to form a pair of electrodes which remain mechanically connected. The connecting portion (22) provides sufficient electrical impedance between the electrodes to effectively electrically separate the electrodes. The connecting portion may be doped or chemically modified to obtain a desired impedance, or this may be obtained through appropriate selection of physical dimensions.Type: ApplicationFiled: September 25, 2007Publication date: June 17, 2010Applicant: OWLSTONE LTD.Inventors: Matthew Hart, Andrew Koehl
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Patent number: 7714278Abstract: An ion mobility spectrometer is described having an ion filter in the form of at least one ion channel having a plurality of electrodes. A time-varying electric potential applied to the conductive layers allows the filler to selectively admit ion species. The electric potential has a drive and a transverse component, and in preferred embodiments each of the electrodes is involved in generating a component of both the drive and transverse fields. The device may be used without a drift gas flow, Microfabrication techniques are described for producing microscale spectrometers, as are various uses of the spectrometer.Type: GrantFiled: August 2, 2005Date of Patent: May 11, 2010Assignee: Owlstone Ltd.Inventors: Paul Boyle, Andrew Koehl, David Ruiz Alonso
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Publication number: 20090320991Abstract: The invention relates to novel methods of incorporating nanotubes for use in micro- or nano-devices. The invention further relates to incorporating nanotubes in micro or nano-devices and particularly synthesizing or growing nanotubes directly in or on components of a micro- or nano-device. In a particular embodiment, the invention relates to methods of synthesizing or growing nanotubes in a gas chromatography column and their use in portable gas chromatography devices.Type: ApplicationFiled: September 30, 2005Publication date: December 31, 2009Inventors: Paul Boyle, David Ruiz-Alonso, Andrew Koehl, Martyn Rush, Russell Parris, Ashley Wilks
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Patent number: 7507972Abstract: A compact ionization source includes first and second electrodes, each having a plurality of fingers that are interdigitated with each other. The spacing between the first and second electrode, preferably less than 1 mm, creates a large electric field when a potential is applied across the first and second electrodes. The large electric field creates an ionization volume between the fingers of the first and second electrode and ionizes a portion of the molecules occupying the ionization volume. The interdigitated fingers of the first and second electrodes allow for a narrow gap separating the electrodes while presenting a large flow area for ionizing molecules for downstream analysis.Type: GrantFiled: October 10, 2005Date of Patent: March 24, 2009Assignee: Owlstone Nanotech, Inc.Inventors: Martyn Rush, Paul Boyle, David Ruiz-Alonso, Andrew Koehl, Russell Parris, Ashley Wilks
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Patent number: 7498570Abstract: An ion mobility spectrometer is described having an ion filter in the form of multiple parallel ion channels defined by conductive layers separated by non-conductive layers. A time-varying electric potential applied to the conductive layers allows the filter to selectively admit ion species. The device may be used without a drift gas flow. Microfabrication techniques are described for producing microscale spectrometers, as are various uses of the spectrometer.Type: GrantFiled: August 2, 2005Date of Patent: March 3, 2009Assignee: Owistone Ltd.Inventors: Paul Boyle, Andrew Koehl, David Ruiz Alonso
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Publication number: 20080191132Abstract: An ion mobility spectrometer is described having an ion filter in the form of at least one ion channel having a plurality of electrodes. A time-varying electric potential applied to the conductive layers allows the filler to selectively admit ion species. The electric potential has a drive and a transverse component, and in preferred embodiments each of the electrodes is involved in generating a component of both the drive and transverse fields. The device may be used without a drift gas flow, Microfabrication techniques are described for producing microscale spectrometers, as are various uses of the spectrometer.Type: ApplicationFiled: August 2, 2005Publication date: August 14, 2008Applicant: OWLSTONE LTDInventors: Paul Boyle, Andrew Koehl, David Ruiz Alonso
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Publication number: 20080121103Abstract: The present invention relates to a three dimensional preconcentrator and inlet heater. The preconcentrator consists of a substrate with passageways, a conductive material coated to the top and the bottom of the substrate and an adsorbent coating covering the entire substrate. This substrate is suspended in a holding frame by a connecting bridge. The preconcentrator may also include a resistor and a proportional-integral-differential controller. The device may be used inline with a detector and can be retrofitted to existing devices. An array of preconcentrators may also be formed. The invention also relates to methods of use of the preconcentrator and methods of manufacture. A method of use includes contacting an analyte and a preconcentrator, allowing the analyte to adsorb to the preconcentrator and then desorbing the analyte. A method of manufacture involves applying the adsorbent coating by misted chemical deposition.Type: ApplicationFiled: December 10, 2007Publication date: May 29, 2008Inventors: Paul Boyle, David Ruiz-Alonzo, Andrew Koehl, Martyn Rush, Russell Parris, Ashley Wilks
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Patent number: 7358487Abstract: An ion gate is disposed between a first volume occupied by a first carrier gas and ions of the first carrier gas and a second volume occupied by a second carrier gas. The ion gate includes at least one channel connecting the first volume to the second volume, a first electrode disposed on an inlet surface of the ion gate facing the first volume, and a second electrode disposed on an outlet surface of the ion gate facing the second volume. Ions are transported from the first volume to the second volume through the channel under an electric field produced by the first and second electrode.Type: GrantFiled: September 19, 2005Date of Patent: April 15, 2008Assignee: Owlstone Nanotech, Inc.Inventors: David Ruiz-Alonso, Andrew Koehl, Paul Boyle, Martyn Rush, Russell Parris, Ashley Wilks
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Publication number: 20080054174Abstract: An ion mobility spectrometer is described having an ion filter in the form of multiple parallel ion channels defined by conductive layers separated by non-conductive layers. A time-varying electric potential applied to the conductive layers allows the filter to selectively admit ion species. The device may be used without a drift gas flow. Microfabrication techniques are described for producing microscale spectrometers, as are various uses of the spectrometer.Type: ApplicationFiled: August 2, 2005Publication date: March 6, 2008Inventors: Paul Boyle, Andrew Koehl, David Ruiz Alonso
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Patent number: 7306649Abstract: The present invention relates to a three dimensional preconcentrator and inlet heater. The preconcentrator consists of a substrate with passageways, a conductive material coated to the top and the bottom of the substrate and an adsorbent coating covering the entire substrate. This substrate is suspended in a holding frame by a connecting bridge. The preconcentrator may also include a resistor and a proportional-integral-differential controller. The device may be used inline with a detector and can be retrofitted to existing devices. An array of preconcentrators may also be formed. The invention also relates to methods of use of the preconcentrator and methods of manufacture. A method of use includes contacting an analyte and a preconcentrator, allowing the analyte to adsorb to the preconcentrator and then desorbing the analyte. A method of manufacture involves applying the adsorbent coating by misted chemical deposition.Type: GrantFiled: September 30, 2005Date of Patent: December 11, 2007Assignee: Advance Nanotech, Inc.Inventors: Paul Boyle, David Ruiz-Alonso, Andrew Koehl, Martyn Rush, Russell Parris, Ashley Wilks
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Publication number: 20070237681Abstract: The invention relates to novel micro- or nanostructures incorporating nanotubes, wherein nanotubes are synthesized or grown directly in or on components of a micro- or nano-structure. In a particular embodiment, the invention relates to methods of synthesizing or growing nanotubes in a gas chromatography column and their use in portable gas chromatography devices.Type: ApplicationFiled: September 30, 2005Publication date: October 11, 2007Inventors: Paul Boyle, David Ruiz-Alonso, Andrew Koehl, Martyn Rush, Russell Parris, Ashley Wilks
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Publication number: 20070090286Abstract: The present invention relates to an ion drive for selectively isolating an analyte of interest and methods of use thereof. The ion drive includes a substrate with channels therethrough, a conductive material coating on the bottom and top of the substrate, a top electrical lead connected to the conductive material coating covering the top of the substrate, and a bottom electrical lead connected to the conductive material coating covering the bottom of the substrate. The invention further relates to an odor emitter which is made up of an ion drive mounted towards the top of a vessel.Type: ApplicationFiled: October 26, 2005Publication date: April 26, 2007Inventors: Russell Parris, David Ruiz-Alonso, Andrew Koehl, Martyn Rush, Paul Boyle, Ashley Wilks
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Publication number: 20070084346Abstract: The invention relates to novel micro- or nanostructures incorporating nanotubes, wherein nanotubes are synthesized or grown directly in or on components of a micro- or nano-structure. In a particular embodiment, the invention relates to methods of synthesizing or growing nanotubes in a gas chromatography column and their use in portable gas chromatography devices.Type: ApplicationFiled: September 30, 2005Publication date: April 19, 2007Inventors: Paul Boyle, David Ruiz-Alonso, Andrew Koehl, Martyn Rush, Russell Parris, Ashley Wilks
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Publication number: 20070084347Abstract: The present invention relates to a three dimensional preconcentrator and inlet heater. The preconcentrator consists of a substrate with passageways, a conductive material coated to the top and the bottom of the substrate and an adsorbent coating covering the entire substrate. This substrate is suspended in a holding frame by a connecting bridge. The preconcentrator may also include a resistor and a proportional-integral-differential controller. The device may be used inline with a detector and can be retrofitted to existing devices. An array of preconcentrators may also be formed. The invention also relates to methods of use of the preconcentrator and methods of manufacture. A method of use includes contacting an analyte and a preconcentrator, allowing the analyte to adsorb to the preconcentrator and then desorbing the analyte. A method of manufacture involves applying the adsorbent coating by misted chemical deposition.Type: ApplicationFiled: September 30, 2005Publication date: April 19, 2007Inventors: Paul Boyle, David Ruiz-Alonso, Andrew Koehl, Martyn Rush, Russell Parris, Ashley Wilks