Patents by Inventor Alexander William Colburn

Alexander William Colburn 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: 7375344
    Abstract: An ion focusing and conveying device 10 comprises a plurality of electrodes 12 in series. Means is provided to apply a first alternating voltage waveform to each electrode 12, the phase of the alternating voltage in the first waveform is applied to each electrode 12 in the series being ahead of the phase of the first alternating voltage waveform applied to the preceding electrode 12 in the series by less than 180°, preferably by 90° or less, such that ions are focused onto an axis of travel and impelled along the series of electrodes 12.
    Type: Grant
    Filed: April 15, 2005
    Date of Patent: May 20, 2008
    Assignee: Peter Derrick
    Inventors: Peter John Derrick, Alexander William Colburn, Anastassios Giannakopulos
  • Patent number: 7075065
    Abstract: Mass spectrometry apparatus 105 comprises a serial arrangement of an ion source 110, first time of flight means, a field free region 120, means to fragment the molecules, a second time of flight means and a large area detector 160. The second time of flight means includes an ion mirror 150, the ion mirror 150 being arranged to produce a reflecting substantially quadratic field. The first time of flight means is arranged to provide spatial focusing concomitant with time focusing of ions at or near the entrance to the ion mirror 150. The means provided to fragment the ions front the first time of flight means can be a collision cell 140 or in the field free region 220 or in the first time of flight means. The means to fragment the molecules has a potential which is different from the potential at the entrance to the ion mirror 150, and the detecting surface of the detector 160 is mounted in the time focal surface of the ion mirror 150.
    Type: Grant
    Filed: August 24, 2004
    Date of Patent: July 11, 2006
    Assignee: University of Warwick
    Inventors: Alexander William Colburn, Peter John Derrick, Anastassios Giannakopulos
  • Patent number: 6894286
    Abstract: An ion focussing and conveying device 10 comprises a plurality of electrodes 12 in series. Means is provided to apply a first alternating voltage waveform to each electrode 12, the phase of the alternating voltage in the first waveform is applied to each electrode 12 in the series being ahead of the phase of the first alternating voltage waveform applied to the preceding electrode 12 in the series by less than 180°, preferably by 90° or less, such that ions are focussed onto an axis of travel and impelled along the series of electrodes 12.
    Type: Grant
    Filed: November 23, 2001
    Date of Patent: May 17, 2005
    Assignee: University of Warwick
    Inventors: Peter John Derrick, Alexander William Colburn, Anastassios Giannakopulos
  • Patent number: 6781122
    Abstract: Mass spectrometry apparatus 105 comprises a serial arrangement of an ion source 110, first time of flight means, a field free region 120, means to fragment the molecules, a second time of flight means and a large area detector 160 The second time of flight means includes an ion mirror 150, the ion mirror 150 being arranged to produce a reflecting substantially quadratic field. The first time of flight means is arranged to provide spatial focusing concomitant with time focusing of ions at or near the entrance to the ion mirror 150. The means provided to fragment the ions from the first time of flight means can be a collision cell 140 or in the field free region 220 or in the first time of flight means. The means to fragment the molecules has a potential which is different from the potential at the entrance to the ion mirror 150, and the detecting surface of the detector 160 is mounted in the time focal surface of the ion mirror 150.
    Type: Grant
    Filed: November 25, 2002
    Date of Patent: August 24, 2004
    Assignee: University of Warwick
    Inventors: Alexander William Colburn, Peter John Derrick, Anastassios Giannakopulos
  • Publication number: 20040046124
    Abstract: An ion focussing and conveying device 10 comprises a plurality of electrodes 12 in series. Means is provided to apply a first alternating voltage waveform to each electrode 12, the phase of the alternating voltage in the first waveform is applied to each electrode 12 in the series being ahead of the phase of the first alternating voltage waveform applied to the preceding electrode 12 in the series by less than 180°, preferably by 90° or less, such that ions are focussed onto an axis of travel and impelled along the series of electrodes 12.
    Type: Application
    Filed: September 17, 2003
    Publication date: March 11, 2004
    Inventors: Peter John Derrick, Alexander William Colburn, Anastassios Giannakopulos
  • Publication number: 20030183758
    Abstract: Mass spectromctry apparatus 105 comprises a serial arrangement of an ion source 110, first time of flight means, a field frce region 120, means to fragment the molecules, a second time of flight means and a large area detector 160 The second time of flight means includes an ion mirror 150, the ion mirror 150 being arranged to produce a reflecting substantially quadratic field. The first time of flight means is arranged to provide spatial focusing concomitant with time focusing of ions at or near the entrance to the ion mirror 150. The means provided to fragment the ions from the first time of flight means can be a collision cell 140 or in the field free region 220 or in the first time of flight means. The means to fragment the molecules has a potential which is different from the potential at the entrance to the ion mirror 150, and the detecting surface of the detector 160 is mounted in the time focal surface of the ion mirror 150.
    Type: Application
    Filed: November 25, 2002
    Publication date: October 2, 2003
    Inventors: Alexander William Colburn, Peter John Derrick, Anastassios Giannakopulos