Patents by Inventor Charles Nehemiah McEwen

Charles Nehemiah McEwen 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).

  • Patent number: 10796894
    Abstract: An ionizing system includes a channel and a heater coupled to the channel. The channel has an inlet disposed in a first pressure region having a first pressure and an outlet disposed in a second pressure region having a second pressure. The first pressure is greater than the second pressure. The heater is for heating the channel, and the channel is configured to generate charged particles of a sample in response to the sample being introduced into the channel.
    Type: Grant
    Filed: November 12, 2018
    Date of Patent: October 6, 2020
    Assignees: University Of The Sciences in Philadelphia, Wayne State University
    Inventors: Sarah Trimpin, Charles Nehemiah McEwen, Vincent Salvatore Pagnotti
  • Publication number: 20190096649
    Abstract: An ionizing system includes a channel and a heater coupled to the channel. The channel has an inlet disposed in a first pressure region having a first pressure and an outlet disposed in a second pressure region having a second pressure. The first pressure is greater than the second pressure.
    Type: Application
    Filed: November 12, 2018
    Publication date: March 28, 2019
    Applicants: UNIVERSITY OF THE SCIENCES IN PHILADELPHIA, WAYNE STATE UNIVERSITY
    Inventors: Sarah TRIMPIN, Charles Nehemiah McEWEN, Vincent Salvatore PAGNOTTI
  • Patent number: 10128096
    Abstract: An ionizing system includes a channel and a heater coupled to the channel. The channel has an inlet disposed in a first pressure region having a first pressure and an outlet disposed in a second pressure region having a second pressure. The first pressure is greater than the second pressure. The heater is for heating the channel, and the channel is configured to generate charged particles of a sample in response to the sample being introduced into the channel.
    Type: Grant
    Filed: January 9, 2017
    Date of Patent: November 13, 2018
    Assignees: University Of The Sciences In Philadelphia, Wayne State University
    Inventors: Sarah Trimpin, Charles Nehemiah McEwen, Vincent Salvatore Pagnotti
  • Publication number: 20170148621
    Abstract: An ionizing system includes a channel and a heater coupled to the channel. The channel has an inlet disposed in a first pressure region having a first pressure and an outlet disposed in a second pressure region having a second pressure. The first pressure is greater than the second pressure. The heater is for heating the channel, and the channel is configured to generate charged particles of a sample in response to the sample being introduced into the channel.
    Type: Application
    Filed: January 9, 2017
    Publication date: May 25, 2017
    Applicants: UNIVERSITY OF THE SCIENCES IN PHILADELPHIA, WAYNE STATE UNIVERSITY
    Inventors: Sarah TRIMPIN, Charles Nehemiah McEWEN, Vincent Salvatore PAGNOTTI
  • Patent number: 9552973
    Abstract: An ionizing system includes a channel having an inlet disposed in a first pressure region and an outlet disposed in a second pressure region, a pressure of the first pressure region being greater than a pressure of the second pressure region. A heater is coupled to the channel and configured to heat the channel. A device is configured to introduce an analyte into the channel where the analyte is ionized.
    Type: Grant
    Filed: September 1, 2011
    Date of Patent: January 24, 2017
    Assignees: University of the Sciences in Philadelphia, Wayne State University
    Inventors: Charles Nehemiah McEwen, Sarah Trimpin, Vincent Salvatore Pagnotti
  • Patent number: 9305759
    Abstract: An ion source able to ionize liquid and gaseous effluents from interfaced liquid or gaseous separation techniques and from direct introduction of the analyte to the entrance of the ionization region. The liquid effluents from sources such as a liquid chromatograph are ionized by inlet ionization methods and the gaseous effluents from sources such as a gas chromatograph are ionized by a corona or Townsend electrical discharge, or an alpha or beta emitter, or by inlet ionization, or by photoionization. Ionization occurs in an intermediate pressure region linking atmospheric pressure and the vacuum of the mass analyzer. The source has the ability to ionize compounds from both liquid and gaseous sources, which facilitates ionization of volatile compounds separated by gas chromatography, volatile or non-volatile compounds separated by liquid chromatography, or infused into the ionization. The ionization methods can be achieved with a single configuration or with separately optimized configurations.
    Type: Grant
    Filed: January 24, 2013
    Date of Patent: April 5, 2016
    Assignee: University of the Sciences in Philadelphia
    Inventors: Charles Nehemiah McEwen, Vincent Salvatore Pagnotti
  • Publication number: 20140332695
    Abstract: An ion source able to ionize liquid and gaseous effluents from interfaced liquid or gaseous separation techniques and from direct introduction of the analyte to the entrance of the ionization region. The liquid effluents from sources such as a liquid chromatograph are ionized by inlet ionization methods and the gaseous effluents from sources such as a gas chromatograph are ionized by a corona or Townsend electrical discharge, or an alpha or beta emitter, or by inlet ionization, or by photoionization. Ionization occurs in an intermediate pressure region linking atmospheric pressure and the vacuum of the mass analyzer. The source has the ability to ionize compounds from both liquid and gaseous sources, which facilitates ionization of volatile compounds separated by gas chromatography, volatile or non-volatile compounds separated by liquid chromatography, or infused into the ionization. The ionization methods can be achieved with a single configuration or with separately optimized configurations.
    Type: Application
    Filed: January 24, 2013
    Publication date: November 13, 2014
    Inventors: Charles Nehemiah McEwen, Vincent Salvatore Pagnotti
  • Publication number: 20130214154
    Abstract: An ionizing system includes a channel having an inlet disposed in a first pressure region and an outlet disposed in a second pressure region, a pressure of the first pressure region being greater than a pressure of the second pressure region. A heater is coupled to the channel and configured to heat the channel. A device is configured to introduce an analyte into the channel where the analyte is ionized.
    Type: Application
    Filed: September 1, 2011
    Publication date: August 22, 2013
    Applicants: WAYNE STATE UNIVERSITY, UNIVERSITY OF THE SCIENCES IN PHILADELPHIA
    Inventors: Charles Nehemiah McEwen, Vincent Salvatore Pagnotti, Sarah Trimpin
  • Patent number: 8377622
    Abstract: The invention is related to thermal imageable dielectric layers and thermal transfer donors and receivers comprising dielectric layers. The thermal transfer donors are useful in making electronic devices by thermal transfer of dielectric layers having excellent resistivity, good transfer properties and good adhesion to a variety of receivers.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: February 19, 2013
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Gerald Donald Andrews, Richard Kevin Bailey, Graciela Beatriz Blanchet, Reid John Chesterfield, Feng Gao, Marc B. Goldfinger, Gary Delmar Jaycox, Lynda Kaye Johnson, William J. Marshall, Elizabeth Forrester McCord, Charles Nehemiah McEwen, Jeffrey Scott Meth, Geoffrey Nunes, Kenneth George Sharp
  • Patent number: 8308886
    Abstract: The invention discloses processes for thermal transfer patterning of a nanoparticle layer and a corresponding proximate portion of a carrier layer, and optionally additional transfer layers, together onto a thermal imaging receiver. The invention is useful for dry fabrication of electronic devices. Additional embodiments of the invention include multilayer thermal imaging donors comprising in layered sequence: a base film, a carrier layer and a nanoparticle layer. The carrier layer can be a dielectric or conducting layer. When the carrier layer is a dielectric layer, the base film includes a light attenuating agent in the form of a dye or pigment.
    Type: Grant
    Filed: July 17, 2006
    Date of Patent: November 13, 2012
    Assignee: E I du Pont de Nemours and Company
    Inventors: Gerald Donald Andrews, Marc B Goldfinger, Mark Andrew Harmer, Gary Delmar Jaycox, Lynda Kaye Johnson, Irina Malajovich, William J Marshall, Elizabeth Forrester McCord, Charles Nehemiah McEwen, Jeffrey Scott Meth, Richard Kevin Bailey, Geoffrey Nunes, Rinaldo Soria Schiffino, Paul J Shannon, Kenneth George Sharp, Karyn B Visscher, Graciela Beatriz Blanchet, John W Catron, Jr., Reid John Chesterfield, Thomas C Felder, Feng Gao, Howard David Glicksman
  • Publication number: 20120251802
    Abstract: The invention is related to thermal imageable dielectric layers and thermal transfer donors and receivers comprising dielectric layers. The thermal transfer donors are useful in making electronic devices by thermal transfer of dielectric layers having excellent resistivity, good transfer properties and good adhesion to a variety of receivers.
    Type: Application
    Filed: September 22, 2011
    Publication date: October 4, 2012
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Gerald Donald Andrews, Richard Kevin Bailey, Graciela Beatriz Blanchet, Reid John Chesterfield, Feng Gao, Marc B. Goldfinger, Gary Delmar Jaycox, Lynda Kaye Johnson, William J. Marshall, Elizabeth Forrester McCord, Charles Nehemiah McEwen, Jeffrey Scott Meth, Geoffrey Nunes, Kenneth George Sharp
  • Patent number: 7977629
    Abstract: An ion source able to ionize both liquid and gaseous vapors from interfaced liquid separation techniques and a solids/liquid atmospheric pressure (AP) probe. The liquid effluents are ionized by electrospray ionization, photoionization or atmospheric pressure chemical ionization and the vapors released from a probe device placed in a heated gas stream in the AP source are ionized by a corona or Townsend electrical discharge or photoionization. The source has the ability to ionize compounds from both liquid and solid sources, which facilitates ionization of volatile and semivolatile compounds by applying heat from a gas stream as well as highly non-volatile compounds infused by electrospray or separated by liquid chromatography or capillary electrophoresis.
    Type: Grant
    Filed: September 3, 2008
    Date of Patent: July 12, 2011
    Assignee: M&M Mass Spec Consulting, LLC
    Inventors: Charles Nehemiah McEwen, Richard Garrett McKay
  • Publication number: 20110031392
    Abstract: An ion source able to ionize both liquid and gaseous vapors from interfaced liquid separation techniques and a solids/liquid atmospheric pressure (AP) probe. The liquid effluents are ionized by electrospray ionization, photoionization or atmospheric pressure chemical ionization and the vapors released from a probe device placed in a heated gas stream in the AP source are ionized by a corona or Townsend electrical discharge or photoionization. The source has the ability to ionize compounds from both liquid and solid sources, which facilitates ionization of volatile and semivolatile compounds by applying heat from a gas stream as well as highly non-volatile compounds infused by electrospray or separated by liquid chromatography or capillary electrophoresis.
    Type: Application
    Filed: September 3, 2008
    Publication date: February 10, 2011
    Inventors: Charles Nehemiah McEwen, Richard Garrett McKay
  • Publication number: 20100276589
    Abstract: An atmospheric pressure (AP) mass spectrometry ion source able to ionize analytes in liquid effluents from interfaced liquid separation techniques and from individual containers, as in microtiter plates, by direct introduction of the analyte into the ion source using a moving ribbon, wire, or belt with vaporization of the analyte and subsequent ionization using an electric discharge or photoionization. The AP source may also incorporate atmospheric pressure chemical ionization (APCI), photoionization (APPI) and/or electrospray ionization (ESI), techniques that are commercially available. The source facilitates ionization of volatile and semivolatile compounds by applying heat from a gas stream to vaporize analyte entering the ionization region on a moving transport device. Solvent removal prior to sample entering the ionization region enables ionization of a wider range of compounds than liquid introduction APCI or APPI.
    Type: Application
    Filed: May 4, 2009
    Publication date: November 4, 2010
    Applicant: M&M MASS SPEC CONSULTING LLC
    Inventors: Richard Garrett McKay, Charles Nehemiah McEwen
  • Publication number: 20100239794
    Abstract: The invention discloses processes for thermal transfer patterning of a nanoparticle layer and a corresponding proximate portion of a carrier layer, and optionally additional transfer layers, together onto a thermal imaging receiver. The invention is useful for dry fabrication of electronic devices. Additional embodiments of the invention include multilayer thermal imaging donors comprising in layered sequence: a base film, a carrier layer and a nanoparticle layer. The carrier layer can be a dielectric or conducting layer. When the carrier layer is a dielectric layer, the base film includes a light attenuating agent in the form of a dye or pigment.
    Type: Application
    Filed: July 17, 2006
    Publication date: September 23, 2010
    Inventors: Gerald Donald Andrews, Richard Kevin Bailey, Graciela Beatriz Blanchet, Jonathan V. Caspar, John Catron, Reid John Chesterfield, Thomas C. Felder, Feng Gao, Howard David Glicksman, Marc B. Goldfinger, Mark Andrew Harmer, Gary Delmar Jaycox, Lynda Kaye Johnson, Dalen E. Keys, Irina Malajovich, William J. Marshall, Elizabeth Forrester McCord, Charles Nehemiah McEwen, Jeffrey Scott Meth, Geoffrey Nunes, Rinaldo S. Schiffino, Paul J. Shannon, Kenneth George Sharp, Nancy G. Tassi, Karyn B. Visscher
  • Patent number: 7642510
    Abstract: An ion source able to ionize both liquid and gaseous effluents from interfaced liquid or gaseous separation techniques. The liquid effluents are ionized by electrospray ionization, photoionization or atmospheric pressure chemical ionization and the gaseous effluents from sources such as a gas chromatograph are ionized by a corona or Townsend electrical discharge or photoionization. The source has the ability to ionize compounds from both liquid and gaseous sources, which facilitates ionization of volatile compounds separated by gas chromatography, low volatility compounds separated by liquid chromatography, as well as highly non-volatile compounds infused by electrospray or separated by liquid chromatography or capillary electrophoresis.
    Type: Grant
    Filed: August 22, 2006
    Date of Patent: January 5, 2010
    Assignee: E.I. du Pont de Nemours and Company
    Inventor: Charles Nehemiah McEwen
  • Publication number: 20080048107
    Abstract: An ion source able to ionize both liquid and gaseous effluents from interfaced liquid or gaseous separation techniques. The liquid effluents are ionized by electrospray ionization, photoionization or atmospheric pressure chemical ionization and the gaseous effluents from sources such as a gas chromatograph are ionized by a corona or Townsend electrical discharge or photoionization. The source has the ability to ionize compounds from both liquid and gaseous sources, which facilitates ionization of volatile compounds separated by gas chromatography, low volatility compounds separated by liquid chromatography, as well as highly non-volatile compounds infused by electrospray or separated by liquid chromatography or capillary electrophoresis.
    Type: Application
    Filed: August 22, 2006
    Publication date: February 28, 2008
    Inventor: Charles Nehemiah Mcewen
  • Patent number: 6871794
    Abstract: A device that can be used for dispersing or dispensing a liquid is provided that comprises a container, a nozzle device, a secondary wick, and a control device in which the container comprises, an open end and a liquid; the nozzle comprises a primary wick, a first end being in fluid communication with the liquid, and a second end extending through the open end of the container and having an opening; the aperture has extended therethrough the primary wick; the secondary wick extends into proximity with the primary wick; and the secondary wick is securely connected to a control device, which controls the distance between the primary wick and the secondary wick.
    Type: Grant
    Filed: May 1, 2003
    Date of Patent: March 29, 2005
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Charles Nehemiah McEwen
  • Publication number: 20040217188
    Abstract: A device that can be used for dispersing or dispensing a liquid is provided that comprises a container, a nozzle device, a secondary wick, and a control device in which the container comprises, an open end and a liquid; the nozzle comprises a primary wick, a first end being in fluid communication with the liquid, and a second end extending through the open end of the container and having an opening; the aperture has extended therethrough the primary wick; the secondary wick extends into proximity with the primary wick; and the secondary wick is securely connected to a control device, which controls the distance between the primary wick and the secondary wick.
    Type: Application
    Filed: May 1, 2003
    Publication date: November 4, 2004
    Inventor: Charles Nehemiah McEwen
  • Patent number: 6729552
    Abstract: A device that can be used for dispersing a liquid is disclose. The device comprises a container, a capillary device, and a housing. The container has an open end that is connected to the capillary device and comprises a liquid. The capillary device comprises a substantially tubular member having one end secured to the open end of the container and the opposing end extended therethrough a substantially tubular capillary structure, which is coaxially aligned with the substantially tubular member. The capillary structure is in fluid communication with the liquid in the container. The housing comprises a first end having an opening attached thereon the container, a low voltage supplier attached to one wall, a high voltage converter attached to another wall, a voltage contact and a counter electrode, optionally a heat and/or lighting source, a wicking material, and further optionally electronics for voltage regulation. Also disclosed is a process for dispensing liquid using the device.
    Type: Grant
    Filed: April 22, 2003
    Date of Patent: May 4, 2004
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Charles Nehemiah McEwen, William J. Herron, Richard G. McKay