Patents by Inventor John MacAskill

John MacAskill 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).

  • Ultrahigh resolution mass spectrometry using an electrostatic ion bottle with coupling to a quadrupole ion trap
    Patent number: 10580636
    Abstract: An apparatus for measuring mass of one or more ions, the apparatus including an ion trap coupled to an electrostatic ion bottle (EIB).
    Type: Grant
    Filed: August 11, 2016
    Date of Patent: March 3, 2020
    Assignee: CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventors: Ara Chutjian, John A. MacAskill
  • ULTRAHIGH RESOLUTION MASS SPECTROMETRY USING AN ELECTROSTATIC ION BOTTLE WITH COUPLING TO A QUADRUPOLE ION TRAP
    Publication number: 20170047218
    Abstract: An apparatus for measuring mass of one or more ions, the apparatus including an ion trap coupled to an electrostatic ion bottle (EIB).
    Type: Application
    Filed: August 11, 2016
    Publication date: February 16, 2017
    Applicant: California Institute of Technology
    Inventors: Ara Chutjian, John A. MacAskill
  • Power filter
    Patent number: 8027137
    Abstract: Generally, a DC power filter and its associated components are presented herein. The DC power filter may operate in a telecommunications chassis between one or more electrical sources and one or more loads. A common mode noise shunt may be included to shunt noise from more than one of the electrical sources or loads together. Additionally, the DC power filter may include protection circuitry that is coupled to more than one of the electrical sources. The protection circuitry may include a combination of diodes and other transient voltage suppression devices.
    Type: Grant
    Filed: July 2, 2009
    Date of Patent: September 27, 2011
    Assignee: Flextronics AP, LLC
    Inventors: James Robert Hamstra, John MacAskill, Kieran Miller, Aaron Jungreis, Dan Gorcea
  • POWER FILTER
    Publication number: 20100259100
    Abstract: Generally, a DC power filter and its associated components are presented herein. The DC power filter may operate in a telecommunications chassis between one or more electrical sources and one or more loads. A common mode noise shunt may be included to shunt noise from more than one of the electrical sources or loads together. Additionally, the DC power filter may include protection circuitry that is coupled to more than one of the electrical sources. The protection circuitry may include a combination of diodes and other transient voltage suppression devices.
    Type: Application
    Filed: July 2, 2009
    Publication date: October 14, 2010
    Inventors: James Robert Hamstra, John MacAskill, Kieran Miller, Aaron Jungreis, Dan Gorcea
  • Electronic drive and acquisition system for mass spectrometry
    Patent number: 7772550
    Abstract: The present invention discloses an mixed signal RF drive electronics board that offers small, low power, reliable, and customizable method for driving and generating mass spectra from a mass spectrometer, and for control of other functions such as electron ionizer, ion focusing, single-ion detection, multi-channel data accumulation and, if desired, front-end interfaces such as pumps, valves, heaters, and columns.
    Type: Grant
    Filed: May 3, 2007
    Date of Patent: August 10, 2010
    Assignee: California Institute of Technology
    Inventors: Rembrandt Thomas Schaefer, Mohammad Mojarradi, Ara Chutjian, Murray R. Darrach, John MacAskill, Tuan Tran, Gary R. Burke, Stojan M. Madzunkov, Brent R. Blaes, John L. Thomas, Ryan A. Stern, David Q. Zhu
  • Electronic drive and acquisition system for mass spectrometry
    Publication number: 20080001083
    Abstract: The present invention discloses an mixed signal RF drive electronics board that offers small, low power, reliable, and customizable method for driving and generating mass spectra from a mass spectrometer, and for control of other functions such as electron ionizer, ion focusing, single-ion detection, multi-channel data accumulation and, if desired, front-end interfaces such as pumps, valves, heaters, and columns.
    Type: Application
    Filed: May 3, 2007
    Publication date: January 3, 2008
    Inventors: Rembrandt Schaefer, Mohammad Majrradi, Ara Chutjian, Murray Darrach, John MacAskill, Tuan Tran, Gary Burke, Stojan Madzunkov, Brent Blaes, John Thomas, Ryan Stern, David Zhu