Patents by Inventor James L. Bertsch
James L. Bertsch 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: 11480181Abstract: The invention relates to a vacuum system, comprising a vacuum pump, preferably turbomolecular pump, and at least one vacuum chamber, wherein the vacuum pump comprises: at least a first and a second inlet and a common outlet; at least a first and a second pumping stage, each pumping stage comprising at least one rotor element being arranged on a common rotor shaft, wherein the first inlet is connected to an upstream end of the first pumping stage and the second inlet is connected to an upstream end of the second pumping stage; a direction element for preventing a gas flow from a downstream end of the first pumping stage to the second inlet; a conduit having a conduit inlet and a conduit outlet, wherein the conduit inlet is connected to the downstream end of the first pumping stage and the conduit outlet is connected to a location downstream of the second pumping stage; wherein the first inlet and the second inlet of the pump are connected to the same vacuum chamber.Type: GrantFiled: July 7, 2020Date of Patent: October 25, 2022Assignees: PFEIFFER VACUUM GMBH, AGILENT TECHNOLOGIES, INC.Inventors: Tobias Stoll, Michael Schweighoefer, Jan Hoffmann, James L. Bertsch
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Patent number: 11152199Abstract: An ion optic assembly includes a set of conductive rods, a first insulator, and a second insulator. The rods are inserted into through-holes of the first insulator, which are arranged about an axis along which the rods are elongated. The rods are then inserted through a bore of the second insulator and become located in notches of the bore, which are arranged about the axis. Accordingly, the first insulator positions one end of the rods at a first distance from the axis, and the second insulator positions the other end of the rods at a second distance from the axis, which may equal to or different from the first distance. The rods contact, and may be spring-biased against, the notches. The assembly may include an electrical contact with fingers spring-biased into contact with the rods. Each insulator may include both through-holes and notches for additional rods.Type: GrantFiled: December 17, 2019Date of Patent: October 19, 2021Assignee: Agilent Technologies, Inc.Inventors: Robert M. Roberts, James L. Bertsch
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Publication number: 20210018004Abstract: The invention relates to a vacuum system, comprising a vacuum pump, preferably turbomolecular pump, and at least one vacuum chamber, wherein the vacuum pump comprises: at least a first and a second inlet and a common outlet; at least a first and a second pumping stage, each pumping stage comprising at least one rotor element being arranged on a common rotor shaft, wherein the first inlet is connected to an upstream end of the first pumping stage and the second inlet is connected to an upstream end of the second pumping stage; a direction element for preventing a gas flow from a downstream end of the first pumping stage to the second inlet; a conduit having a conduit inlet and a conduit outlet, wherein the conduit inlet is connected to the downstream end of the first pumping stage and the conduit outlet is connected to a location downstream of the second pumping stage; wherein the first inlet and the second inlet of the pump are connected to the same vacuum chamber.Type: ApplicationFiled: July 7, 2020Publication date: January 21, 2021Inventors: Tobias STOLL, Michael SCHWEIGHOEFER, Jan HOFFMANN, James L. BERTSCH
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Publication number: 20200211832Abstract: An ion optic assembly includes a set of conductive rods, a first insulator, and a second insulator. The rods are inserted into through-holes of the first insulator, which are arranged about an axis along which the rods are elongated. The rods are then inserted through a bore of the second insulator and become located in notches of the bore, which are arranged about the axis. Accordingly, the first insulator positions one end of the rods at a first distance from the axis, and the second insulator positions the other end of the rods at a second distance from the axis, which may equal to or different from the first distance. The rods contact, and may be spring-biased against, the notches. The assembly may include an electrical contact with fingers spring-biased into contact with the rods. Each insulator may include both through-holes and notches for additional rods.Type: ApplicationFiled: December 17, 2019Publication date: July 2, 2020Inventors: Robert M. Roberts, James L. Bertsch
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Patent number: 10147595Abstract: A quadrupole rod assembly includes a plurality of electrically conductive rods, electrically insulating rings coaxially surrounding the rods, and clamping systems. The rods are arranged about a longitudinal axis. The rods and rings have respective surfaces oriented in a transverse plane orthogonal to the longitudinal axis, which surfaces interface with respective surfaces of the clamping systems that are also oriented in the transverse plane.Type: GrantFiled: October 20, 2017Date of Patent: December 4, 2018Assignee: Agilent Technologies, Inc.Inventors: Robert M. Roberts, James L. Bertsch
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Publication number: 20180174818Abstract: A quadrupole rod assembly includes a plurality of electrically conductive rods, electrically insulating rings coaxially surrounding the rods, and clamping systems. The rods are arranged about a longitudinal axis. The rods and rings have respective surfaces oriented in a transverse plane orthogonal to the longitudinal axis, which surfaces interface with respective surfaces of the clamping systems that are also oriented in the transverse plane.Type: ApplicationFiled: October 20, 2017Publication date: June 21, 2018Inventors: Robert M. Roberts, James L. Bertsch
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Patent number: 9536723Abstract: A field terminator includes a plurality of electrode plates positioned around a guide axis at a radial distance therefrom. The plates generate a quadrupole DC field such that a polarity on each plate is opposite to a polarity on the plates adjacent thereto. The plates may be positioned at an axial end of a quadrupole ion guide such as a mass filter. In addition to an RF field, the ion guide may generate a quadrupole DC field. The DC field of the plates may be opposite in polarity to that of the ion guide.Type: GrantFiled: February 6, 2015Date of Patent: January 3, 2017Assignee: Agilent Technologies, Inc.Inventors: James L. Bertsch, Kenneth R. Newton
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Patent number: 9449804Abstract: An ion guide generates a first RF field of Nth order where N is an integer equal to or greater than 2, and a second RF field of 2Nth order superimposed on the first RF field. The first and second RF fields may be generated by respective first and second sets of electrodes. Another ion guide may include a converging entrance section followed by an exit section. The converging section may have a hyperbolic profile. A hyperbolic profile may be presented by electrodes having a twisted configuration relative to an ion guide axis.Type: GrantFiled: November 11, 2014Date of Patent: September 20, 2016Assignee: Agilent Technologies, Inc.Inventors: James L. Bertsch, Kenneth R. Newton, Layne Howard
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Publication number: 20160133452Abstract: An ion guide generates a first RF field of Nth order where N is an integer equal to or greater than 2, and a second RF field of 2Nth order superimposed on the first RF field. The first and second RF fields may be generated by respective first and second sets of electrodes. Another ion guide may include a converging entrance section followed by an exit section. The converging section may have a hyperbolic profile. A hyperbolic profile may be presented by electrodes having a twisted configuration relative to an ion guide axis.Type: ApplicationFiled: November 11, 2014Publication date: May 12, 2016Inventors: James L. Bertsch, Kenneth R. Newton, Layne Howard
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Patent number: 8890086Abstract: An ion detection system for detecting ions whose velocity varies during an operating cycle. The ion detection system includes a dynode electron multiplier (e.g., a microchannel plate (MCP)) having a bias voltage input, and a bias voltage source to apply a bias voltage to the bias voltage input of the dynode electron multiplier. With a fixed bias voltage applied to its bias voltage input, the dynode electron multiplier has a gain dependent on the velocity of ions incident thereon. The bias voltage applied by the bias voltage source to the bias voltage input of the dynode electron multiplier varies during the operating cycle to reduce the dependence of the gain of the dynode electron multiplier on the velocity of the ions incident thereon.Type: GrantFiled: June 18, 2013Date of Patent: November 18, 2014Assignee: Agilent Technologies, Inc.Inventors: Noah Goldberg, James L. Bertsch, David Deford
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Patent number: 8530832Abstract: Improved apparatuses and methods are provided for ionizing samples and analyzing the samples with mass spectrometry.Type: GrantFiled: October 3, 2011Date of Patent: September 10, 2013Assignee: Agilent Technologies, Inc.Inventors: Alexander Mordehai, Mark H. Werlich, Craig P. Love, James L. Bertsch
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Patent number: 8481963Abstract: Described herein is an ion slicer that: a) accelerates an ion beam towards a first electrode comprising an ion entrance slit, where the first electrode blocks a portion of ions with high displacement from the axis of the ion beam, thereby slicing the ion beam; and then b) decelerates the ion beam after it is sliced.Type: GrantFiled: February 27, 2012Date of Patent: July 9, 2013Assignee: Agilent Technologies, Inc.Inventors: Harvey D. Loucks, Jr., James L. Bertsch, Michael Ugarov, William E. Barry, Yevgeny Kaplun
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Publication number: 20120217388Abstract: Provided herein is a bladed ion slicer for blocking ions in an ion beam that have significant distance from the beam axis. In certain embodiments, the bladed ion slicer comprises a body; a first elongated blade; and a second elongated blade; wherein the ion slicer comprises a slit that extends through the body through which ions pass and wherein the edges of the first and second elongated blades define the entrance of the slit and are pointing towards the ion beam. A mass spectrometer system and method for removing unwanted ions are also provided.Type: ApplicationFiled: February 27, 2012Publication date: August 30, 2012Inventors: Harvey D. Loucks, JR., James L. Bertsch, Michael Ugarov, William E. Barry, Yevgeny Kaplun
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Publication number: 20120217387Abstract: Described herein is an ion slicer that: a) accelerates an ion beam towards a first electrode comprising an ion entrance slit, where the first electrode blocks a portion of ions with high displacement from the axis of the ion beam, thereby slicing the ion beam; and then b) decelerates the ion beam after it is sliced.Type: ApplicationFiled: February 27, 2012Publication date: August 30, 2012Inventors: Harvey D. Loucks, JR., James L. Bertsch, Michael Ugarov, William E. Barry, Yevgeny Kaplun
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Patent number: 8193489Abstract: A multipole ion guide comprises rods disposed about an axis, each of the rods having a first end and a second end remote from the first end. Each of the rods is disposed at a respective greater distance from the axis at the first end than at the second end. The multipole ion guide comprises means for applying a radio frequency (RF) voltage between adjacent pairs of rods, wherein the RF voltage creates a multipole field in a region between the rods; and means for applying a direct current (DC) voltage drop along a length of each of the rods. A mass spectroscopy system is also disclosed.Type: GrantFiled: May 28, 2009Date of Patent: June 5, 2012Assignee: Agilent Technologies, Inc.Inventors: James L. Bertsch, Michael Ugarov
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Publication number: 20120025071Abstract: Improved apparatuses and methods are provided for ionizing samples and analyzing the samples with mass spectrometry.Type: ApplicationFiled: October 3, 2011Publication date: February 2, 2012Inventors: Alexander MORDEHAI, Mark H. Werlich, Craig P. Love, James L. Bertsch
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Patent number: 8039795Abstract: Improved apparatuses and methods are provided for ionizing samples and analyzing the samples with mass spectrometry.Type: GrantFiled: April 3, 2009Date of Patent: October 18, 2011Assignee: Agilent Technologies, Inc.Inventors: Alexander Mordehai, Mark H Werlich, Craig P Love, James L. Bertsch
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Publication number: 20100301210Abstract: A multipole ion guide comprises rods disposed about an axis, each of the rods having a first end and a second end remote from the first end. Each of the rods is disposed at a respective greater distance from the axis at the first end than at the second end. The multipole ion guide comprises means for applying a radio frequency (RF) voltage between adjacent pairs of rods, wherein the RF voltage creates a multipole field in a region between the rods; and means for applying a direct current (DC) voltage drop along a length of each of the rods. A mass spectroscopy system is also disclosed.Type: ApplicationFiled: May 28, 2009Publication date: December 2, 2010Applicant: AGILENT TECHNOLOGIES, INC.Inventors: JAMES L. BERTSCH, Michael Ugarov
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Publication number: 20090250608Abstract: Improved apparatuses and methods are provided for ionizing samples and analyzing the samples with mass spectrometry.Type: ApplicationFiled: April 3, 2009Publication date: October 8, 2009Inventors: Alexander Mordehai, Mark H. Werlich, Craig P. Love, James L. Bertsch
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Patent number: 7507955Abstract: The invention provides a multipole device for a mass spectrometer system. In general, the multipole device contains a plurality of conductive rods each comprising a conductive layer, a resistive layer, and an insulative layer between the conductive and resistive layers. The invention finds use in a variety of applications, including ion transport, ion fragmentation and ion mass filtration. Accordingly, the invention may be employed in a variety of mass spectrometer systems.Type: GrantFiled: March 31, 2006Date of Patent: March 24, 2009Assignee: Agilent Technologies, Inc.Inventors: Robert K. Crawford, James L. Bertsch