Patents by Inventor Patrick D. Perkins
Patrick D. Perkins 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: 10546738Abstract: An ion transfer device includes a tube, a resistive layer on an inside surface of the tube, and a dielectric layer on the resistive layer. The device defines a conduit providing a transfer path for gas and ions. The conduit is surrounded by the dielectric layer. The dielectric layer protects the resistive layer from the chemical environment in the conduit, while being thin enough to allow charges to pass through the dielectric layer and be dissipated by the resistive layer.Type: GrantFiled: December 19, 2018Date of Patent: January 28, 2020Assignee: Agilent Technologies, Inc.Inventors: Mingda Wang, Maozi Liu, Patrick D. Perkins, Jing Tang
-
Patent number: 7930108Abstract: Methods, user interfaces, systems and computer readable media for visualizing data to facilitate analysis of the data. Mass data values are provided for a sample having been separated into portions according to a first characteristic of the sample, the slices having been processed to provide the mass data values of members of the sample occurring in the portions. A plot of the mass data values is displayed on a first axis versus the portions on a second axis of the plot. A mass data value of a member may be selected on the plot, and all mass data values occurring in the portion in which the selected mass data value is located are displayed using first visual indicators that are visibly distinct from visual indicators used to display data values occurring outside of the portion in which the selected data value is located.Type: GrantFiled: January 25, 2008Date of Patent: April 19, 2011Assignee: Agilent Technologies, Inc.Inventors: Robert H. Kincaid, Rudolf Grimm, Patrick D. Perkins
-
Patent number: 7838303Abstract: A method of facilitating analysis of a peptide in a mass spectrometer comprising derivatizing the C-terminus of the peptide with an amino acid residue via a reaction with a carbodiimide reagent, yielding a derivative peptide, ionizing the derivative peptide with a double charge, and fragmenting the ionized derivative peptide in a mass spectrometry system, wherein binary fragments of the ionized derivative each include a charge, facilitating sequence analysis of the peptide.Type: GrantFiled: July 27, 2006Date of Patent: November 23, 2010Assignee: Agilent Technologies, Inc.Inventors: Patrick D. Perkins, Steven M. Fischer
-
Patent number: 7737395Abstract: The present invention provides, inter alia, apparatuses and methods for ionizing samples that are in gaseous phase or can be vaporized/sublimated. The samples include samples to be analyzed and mass calibrants that serve as standards. In addition, the present invention also provides calibrant formulations that release mass calibrants in a slow, controlled manner.Type: GrantFiled: June 2, 2007Date of Patent: June 15, 2010Assignee: Agilent Technologies, Inc.Inventors: Paul C. Goodley, Harry F. Prest, Christine A. Miller, Patrick D. Perkins
-
Publication number: 20090192719Abstract: Methods, user interfaces, systems and computer readable media for visualizing data to facilitate analysis of the data. Mass data values are provided for a sample having been separated into portions according to a first characteristic of the sample, the slices having been processed to provide the mass data values of members of the sample occurring in the portions. A plot of the mass data values is displayed on a first axis versus the portions on a second axis of the plot. A mass data value of a member may be selected on the plot, and all mass data values occurring in the portion in which the selected mass data value is located are displayed using first visual indicators that are visibly distinct from visual indicators used to display data values occurring outside of the portion in which the selected data value is located.Type: ApplicationFiled: January 25, 2008Publication date: July 30, 2009Inventors: Robert H. Kincaid, Rudolf Grimm, Patrick D. Perkins
-
Publication number: 20080067336Abstract: The present invention provides, inter alia, apparatuses and methods for ionizing samples that are in gaseous phase or can be vaporized/sublimated. The samples include samples to be analyzed and mass calibrants that serve as standards. In addition, the present invention also provides calibrant formulations that release mass calibrants in a slow, controlled manner.Type: ApplicationFiled: June 2, 2007Publication date: March 20, 2008Inventors: Paul C. Goodley, Harry F. Prest, Christine A. Miller, Patrick D. Perkins
-
Publication number: 20080026479Abstract: A method of facilitating analysis of a peptide in a mass spectrometer comprising derivatizing the C-terminus of the peptide with an amino acid residue via a reaction with a carbodiimide reagent, yielding a derivative peptide, ionizing the derivative peptide with a double charge, and fragmenting the ionized derivative peptide in a mass spectrometry system, wherein binary fragments of the ionized derivative each include a charge, facilitating sequence analysis of the peptide.Type: ApplicationFiled: July 27, 2006Publication date: January 31, 2008Inventors: Patrick D. Perkins, Steven M. Fischer
-
Patent number: 7304299Abstract: The present invention relates to an ionization source having a chamber for ionizing a sample. The ionization chamber has surfaces to reduce the overall interaction with reactive samples. The inner surface walls of the ionization chamber or the ionization chamber may be formed from an inert super alloy. For instance, Inconel™ 625, Inconel™ 601 or Hastelloy® may comprise the ionization chamber or the surface walls of the ionization chamber. The invention also includes a method for reducing the interaction of a reactive analyte with an ion source.Type: GrantFiled: October 30, 2006Date of Patent: December 4, 2007Assignee: Agilent Technologies, Inc.Inventor: Patrick D. Perkins
-
Patent number: 7148491Abstract: The present invention relates to an ionization source having a chamber for ionizing a sample. The ionization chamber has surfaces to reduce the overall interaction with reactive samples. The inner surface walls of the ionization chamber or the ionization chamber may be formed from an inert super alloy. For instance, Inconel™ 625, Inconel™ 601 or Hastelloy® may comprise the ionization chamber or the surface walls of the ionization chamber. The invention also includes a method for reducing the interaction of a reactive analyte with an ion source.Type: GrantFiled: August 31, 2005Date of Patent: December 12, 2006Assignee: Agilent Technologies, Inc.Inventor: Patrick D. Perkins
-
Patent number: 6974956Abstract: The present invention relates to an ionization source having a chamber for ionizing a sample. The ionization chamber has surfaces to reduce the overall interaction with reactive samples. The inner surface walls of the ionization chamber or the ionization chamber may be formed from an inert super alloy. For instance, Inconel™ 625, Inconel™ 601 or Hastelloy® may comprise the ionization chamber or the surface walls of the ionization chamber. The invention also includes a method for reducing the interaction of a reactive analyte with an ion source.Type: GrantFiled: March 25, 2004Date of Patent: December 13, 2005Assignee: Agilent Technologies, Inc.Inventor: Patrick D. Perkins
-
Publication number: 20040178352Abstract: The present invention relates to an ionization source having a chamber for ionizing a sample. The ionization chamber has surfaces to reduce the overall interaction with reactive samples. The inner surface walls of the ionization chamber or the ionization chamber may be formed from an inert super alloy. For instance, Inconel™ 625, Inconel™ 601 or Hastelloy® may comprise the ionization chamber or the surface walls of the ionization chamber. The invention also includes a method for reducing the interaction of a reactive analyte with an ion source.Type: ApplicationFiled: March 25, 2004Publication date: September 16, 2004Inventor: Patrick D. Perkins
-
Patent number: 6765215Abstract: The present invention relates to an ionization source having a chamber for ionizing a sample. The ionization chamber has surfaces to reduce the overall interaction with reactive samples. The inner surface walls of the ionization chamber or the ionization chamber may be formed from an inert super alloy. For instance, Inconel™ 625, Inconel™ 601 or Hastelloy®) may comprise the ionization chamber or the surface walls of the ionization chamber. The invention also includes a method for reducing the interaction of a reactive analyte with an ion source.Type: GrantFiled: June 28, 2001Date of Patent: July 20, 2004Assignee: Agilent Technologies, Inc.Inventor: Patrick D. Perkins
-
Patent number: 6717138Abstract: An apparatus and method for removing neutral noise from a quadrupole mass filter ion beam. A mask plate has a lobed aperture centered on a longitudinal axis and positioned between a quadrupole mass filter exit end and an ion detector. The mask plate operates to remove neutral atoms from the ion beam that may interfere with instrument sensitivities. The lobed aperture passes the ion beam with little loss of the ion beam intensity. The invention substantially maintains signal intensity and removes unwanted noise from a mass spectrometer.Type: GrantFiled: November 13, 2002Date of Patent: April 6, 2004Assignee: Agilent, Technologies, Inc.Inventors: Jeffrey T. Kernan, Patrick D. Perkins
-
Publication number: 20030201398Abstract: The present invention relates to an ionization source having a chamber for ionizing a sample. The ionization chamber has surfaces to reduce the overall interaction with reactive samples. The inner surface walls of the ionization chamber or the ionization chamber may be formed from an inert super alloy. For instance, Inconel™ 625, Inconel™ 601 or Hastelloy®) may comprise the ionization chamber or the surface walls of the ionization chamber. The invention also includes a method for reducing the interaction of a reactive analyte with an ion source.Type: ApplicationFiled: June 28, 2001Publication date: October 30, 2003Inventor: Patrick D. Perkins
-
Patent number: 6608318Abstract: The present invention relates to a mass spectrometer that includes an ionization source having a chamber for ionizing a fluid sample. The ionization chamber has surfaces to reduce the overall interaction with reactive samples. The inner surface walls of the ionization chamber may be formed from an inorganic conductive nitride or disulfide material or may be applied to a substrate as a coating. The invention also includes a method for reducing the interaction of a reactive analyte with the inner wall of the chamber by application or coating the inner wall of the chamber with an inert conductive material.Type: GrantFiled: July 31, 2000Date of Patent: August 19, 2003Assignee: Agilent Technologies, Inc.Inventors: Patrick D. Perkins, Jeffrey T. Kernan
-
Publication number: 20030075681Abstract: An apparatus and method for removing neutral noise from a quadrupole mass filter ion beam. A mask plate has a lobed aperture centered on a longitudinal axis and positioned between a quadrupole mass filter exit end and an ion detector. The mask plate operates to remove neutral atoms from the ion beam that may interfere with instrument sensitivities. The lobed aperture passes the ion beam with little loss of the ion beam intensity. The invention substantially maintains signal intensity and removes unwanted noise from a mass spectrometer.Type: ApplicationFiled: November 13, 2002Publication date: April 24, 2003Inventors: Jeffrey T. Kernan, Patrick D. Perkins
-
Patent number: 6545271Abstract: An apparatus and method for removing neutral noise from a quadrupole mass filter ion beam. A mask plate has a lobed aperture centered on a longitudinal axis and positioned between a quadrupole mass filter exit end and an ion detector. The mask plate operates to remove neutral atoms from the ion beam that may interfere with instrument sensitivities. The lobed aperture passes the ion beam with little loss of the ion beam intensity. The invention substantially maintains signal intensity and removes unwanted noise from a mass spectrometer.Type: GrantFiled: September 6, 2000Date of Patent: April 8, 2003Assignee: Agilent Technologies, Inc.Inventors: Jeffrey T. Kernan, Patrick D. Perkins
-
Patent number: 4855431Abstract: The invention deals with a process for making a pyrazine from an aminoalkanol by passing it over a crystalline aluminosilicate zeolite having a silica to alumina ratio of at least 12 and a constraint index of 1 to 12 under conditions to dehydrate, dehydrogenate and cyclize it.Type: GrantFiled: January 13, 1983Date of Patent: August 8, 1989Assignee: Mobil Oil Corp.Inventors: Clarence D. Chang, Patrick D. Perkins
-
Patent number: 4654449Abstract: Hydrocarbons and other compounds are halogenated to halocarbon products by contact with a halocarbon in the presence of an acidic zeolite catalyst such as ZSM-5. The process is particularly useful for the halogenation of methane to form chemicals of higher value.Type: GrantFiled: December 9, 1982Date of Patent: March 31, 1987Assignee: Mobil Oil CorporationInventors: Clarence D. Chang, Patrick D. Perkins
-
Patent number: 4476338Abstract: A process for converting methanol and/or dimethyl ether to olefins at moderate temperature and atmospheric pressure comprising contacting the feed with an alumina crystalline zeolite catalyst designated as ZSM-48. The olefins formed can then be converted to a low-durene gasoline over ZSM-5 type catalysts under conventional aromatizing conditions or to a distillate boiling above the gasoline range.Type: GrantFiled: June 2, 1983Date of Patent: October 9, 1984Assignee: Mobil Oil CorporationInventors: Clarence D. Chang, Cynthia T. W. Chu, Patrick D. Perkins, Ernest W. Valyocsik