Patents by Inventor Steven A. Fischer
Steven A. Fischer 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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Publication number: 20060145071Abstract: The present invention relates to an apparatus for delivering ions to a vacuum chamber. The apparatus comprises an ionization chamber, an ionization region within the ionization chamber, a vacuum interface at a vacuum interface voltage and a vacuum chamber, wherein the ionization chamber communicates with the vacuum chamber through the vacuum interface. Sample is introduced into the ionization chamber from an electrospray assembly at approximately ground potential. Two electrodes are provided within the chamber such that three electric fields are generated, a first field extending from the electrospray assembly to the first electrode, a second field extending from the second electrode to the first electrode, and a third field extending from the second electrode to the vacuum interface. Ions are forced to travel through the fields in order before entering the vacuum chamber. In addition, the invention provides a method of delivering ions to a vacuum chamber.Type: ApplicationFiled: February 24, 2006Publication date: July 6, 2006Inventors: William Frazer, Steven Fischer, Robert Crawford
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Publication number: 20060134723Abstract: The present invention provides a new and improved method for quantitative determination and/or identification of proteins in a sample. In one aspect, the invention provides a mass spectroscopic method for comparing protein levels in two or more samples by differentially isotopically labeling each sample's proteins' N- or C-termini. In another aspect, the invention provides a mass-spectroscopic method for identifying a sample as source for a protein from a mixture of two or more samples by differentially isotopically labeling each sample's proteins' N- or C-termini.Type: ApplicationFiled: December 22, 2005Publication date: June 22, 2006Inventor: Steven Fischer
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Publication number: 20060124859Abstract: A multimode ionization source includes an electrospray ionization source for providing a charged aerosol, an atmospheric pressure ionization source downstream from the electrospray ionization source for further ionizing said charged aerosol, and a mode separator, or mask, situated so as to separate a portion of the charged aerosol and prevent the portion from being exposed to the atmospheric pressure ionization source.Type: ApplicationFiled: February 6, 2006Publication date: June 15, 2006Inventors: Steven Fischer, Darrell Gourley, Patricia Cormia
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Patent number: 7036204Abstract: A method for sealingly coupling a first component and a second component. The method includes forming a polymer male portion attached to the first component. The male portion has a first axis and a first bore extending therethrough. The male portion has a first stop surface, a second stop surface and an annular sealing portion intermediate the first stop surface and the second stop surface. The method also includes forming a polymer female portion attached to the second component. The female portion has a second axis and a second bore extending therethrough. The female portion has a third stop surface, a fourth stop surface and an annular ring intermediate the third stop surface and the fourth stop surface. The male portion is urged towards the female portion so that at least one of the first stop surface is adjacent the third stop surface or the second stop surface is adjacent the fourth stop surface.Type: GrantFiled: November 25, 2003Date of Patent: May 2, 2006Assignee: Entegris, Inc.Inventors: Steven A. Fischer, Michael A. Stein, Jeffrey C. Kubesh, Todd J. Edlund, James Donoho, Eric Soderstrom, Michael Stoick
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Publication number: 20060086908Abstract: A multimode ionization source includes an electrospray ionization source for providing a charged aerosol, an atmospheric pressure ionization source downstream from the electrospray ionization source for further ionizing said charged aerosol, and a mode separator, or mask, situated so as to separate a portion of the charged aerosol and prevent the portion from being exposed to the atmospheric pressure ionization source.Type: ApplicationFiled: October 22, 2004Publication date: April 27, 2006Inventors: Steven Fischer, Darrell Gourley, Patricia Cormia
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Publication number: 20060076505Abstract: An atmospheric pressure ion source, e.g. for a mass spectrometer, that produces ions by atmospheric pressure photoionization (APPI). It includes a vaporizer, a photon source for photoionizing vapor molecules upon exit from the vaporizer, a passageway for transporting ions to, for example, a mass spectrometer system, and a means for directing the ions into the passageway. The center axis of the vaporizer and the center axis of the passageway form an angle that may be about 90 degrees. Included in the invention is a method for creating ions by atmospheric pressure photoionization along an axis and directing them into a passageway oriented at an angle to that axis.Type: ApplicationFiled: November 30, 2005Publication date: April 13, 2006Inventors: Steven Fischer, Darrell Gourley, Patricia Cormia, James Bertsch, Karl Hanold
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Publication number: 20060016982Abstract: For generation and delivery of ions from an ionization chamber through an ion entrance orifice to a mass analyzer operating at high vacuum, high pass ion filtration is effected within the ionization chamber by application of electrical potentials to an electrode associated with the ion entrance orifice and to an electrode between the ionization region and the ion entrance orifice to create a retarding electric field upstream from the ion entrance orifice. The retarding electric field hinders the movement to the ion entrance orifice of ions having drift velocities below a lower limit, and as the retarding voltage gradient is made steeper, the lower limit increases.Type: ApplicationFiled: June 27, 2005Publication date: January 26, 2006Inventors: Charles Russ, Steven Fischer, Robert Crawford
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Publication number: 20060019232Abstract: A modular bulletin board includes a plurality of planar panels each having a plurality of edges. Each of the panels is provided along two or more contiguous edges with interleaved projections and recesses that interlock with recesses and projections on an adjacent panel. At least one adhesive element is provided for attaching a rear side of the panels to a surface. The panels have a front layer made of cork and a backing layer made of another material such as a polymeric foam material.Type: ApplicationFiled: July 8, 2004Publication date: January 26, 2006Applicant: VENTURE PRODUCTS, LLCInventors: Steven Fischer, David Fischer
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Patent number: 6973705Abstract: In one embodiment, a sight tube flowmeter is formed of a plurality of fluoropolymer components welded together to form a unitary flowmeter body. The components can comprise a PFA upright sight tube having two end portions, a flow conduit extending therethrough and two fitting portions that are uniquely welded onto each end of the sight tube, and a fluoropolymer float device movable to various positions within the flow conduit depending on the flow level of the fluid flowing therethrough. The float device can be of conventional design or for those flowmeter embodiments where low fluid flow rates are to be measured, an elongate float can be utilized. The floats and, in particular, a designated portion thereof, are visible through the sight tube to provide visual indication of the position, and thus the flow rate of fluid flowing through the flowmeter. In addition, alternative embodiments include the implementation of the unique sight tube and elongate float design in conventional flowmeters.Type: GrantFiled: July 2, 2004Date of Patent: December 13, 2005Assignee: Entegris, Inc.Inventors: John A. Leys, Steven P. Kolbow, Steven A. Fischer, Carlos Cadavid, Todd M. Ulschmid
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Publication number: 20050211911Abstract: The present invention relates to an apparatus and method for use with a mass spectrometry system. The invention provides an ion source, infrared emitter and sensor with closed control feedback loop coupled to the infrared emitter. Methods of control and heating using the apparatus of the present invention are also disclosed.Type: ApplicationFiled: February 25, 2005Publication date: September 29, 2005Inventors: Steven Fischer, Darrell Gourley, Glen Ingle, Timothy Joyce
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Publication number: 20050072934Abstract: The present invention relates to an apparatus for delivering ions to a vacuum chamber. The apparatus comprises an ionization chamber, an ionization region within the ionization chamber, a vacuum interface at a vacuum interface voltage and a vacuum chamber, wherein the ionization chamber communicates with the vacuum chamber through the vacuum interface. Sample is introduced into the ionization chamber from an electrospray assembly at approximately ground potential. Two electrodes are provided within the chamber such that three electric fields are generated, a first field extending from the electrospray assembly to the first electrode, a second field extending from the second electrode to the first electrode, and a third field extending from the second electrode to the vacuum interface. Ions are forced to travel through the fields in order before entering the vacuum chamber. In addition, the invention provides a method of delivering ions to a vacuum chamber.Type: ApplicationFiled: October 29, 2004Publication date: April 7, 2005Inventors: William Frazer, Steven Fischer, Robert Crawford
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Publication number: 20050045833Abstract: An atmospheric pressure ion source, e.g. for a mass spectrometer, that produces ions by atmospheric pressure photoionization (APPI). It includes a vaporizer, a photon source for photoionizing vapor molecules upon exit from the vaporizer, a passageway for transporting ions to, for example, a mass spectrometer system, and a means for directing the ions into the passageway. The center axis of the vaporizer and the center axis of the passageway form an angle that may be about 90 degrees. Included in the invention is a method for creating ions by atmospheric pressure photoionization along an axis and directing them into a passageway oriented at an angle to that axis.Type: ApplicationFiled: June 8, 2004Publication date: March 3, 2005Inventors: Steven Fischer, Darrell Gourley, Patricia Cormia, James Bertsch, Karl Hanold
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Publication number: 20050022610Abstract: In one embodiment, a sight tube flowmeter is formed of a plurality of fluoropolymer components welded together to form a unitary flowmeter body. The components can comprise a PFA upright sight tube having two end portions, a flow conduit extending therethrough and two fitting portions that are uniquely welded onto each end of the sight tube, and a fluoropolymer float device movable to various positions within the flow conduit depending on the flow level of the fluid flowing therethrough. The float device can be of conventional design or for those flowmeter embodiments where low fluid flow rates are to be measured, an elongate float can be utilized. The floats and, in particular, a designated portion thereof, are visible through the sight tube to provide visual indication of the position, and thus the flow rate of fluid flowing through the flowmeter. In addition, alternative embodiments include the implementation of the unique sight tube and elongate float design in conventional flowmeters.Type: ApplicationFiled: July 2, 2004Publication date: February 3, 2005Inventors: John Leys, Steven Kolbow, Steven Fischer, Carlos Cadavid, Todd Ulschmid
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Publication number: 20040164551Abstract: A method for sealingly coupling a first component and a second component. The method includes forming a polymer male portion attached to the first component. The male portion has a first axis and a first bore extending therethrough. The male portion has a first stop surface, a second stop surface and an annular sealing portion intermediate the first stop surface and the second stop surface. The method also includes forming a polymer female portion attached to the second component. The female portion has a second axis and a second bore extending therethrough. The female portion has a third stop surface, a fourth stop surface and an annular ring intermediate the third stop surface and the fourth stop surface. The male portion is urged towards the female portion so that at least one of the first stop surface is adjacent the third stop surface or the second stop surface is adjacent the fourth stop surface.Type: ApplicationFiled: November 25, 2003Publication date: August 26, 2004Applicant: Entegris, Inc.Inventors: Steven A. Fischer, Michael A. Stein, Jeffrey C. Kubesh, Todd J. Edlund, James Donoho, Eric Soderstrom, Michael Stoick
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Patent number: 6652008Abstract: A coupling ideally suited for sealing between components such as a fluoropolymer valve body (50) and a fluoropolymer manifold (52) or for coupling tubing end portions, utilizes structure on said components for defining the sealing surfaces. In a preferred embodiment, the coupling comprises a male protruding portion (62), a recessed female receiving portion (64), and a clamping means. The clamping means (92) has an inner threaded surface for engaging a correspondingly threaded portion of the male protruding portion. The male protruding portion is shaped, generally, as a converging rounded conical frustum (65.1) having an exterior surface, a primary sealing surface, a first stop surface (78), a second cooperating stop surface, and a fluid flow duct. The fluid flow duct is preferably concentrically positioned. The recessed portion has a circular perimeter, an inwardly projecting annular ring (74), a first cooperating stop surface, a second stop (82) surface, and a fluid flow duct.Type: GrantFiled: November 25, 2002Date of Patent: November 25, 2003Assignee: Entegris, Inc.Inventors: Steven A. Fischer, Michael A. Stein, Jeffrey C. Kubesh, Todd J. Edlund, James Donoho, Eric Soderstrom, Michael Stoick
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Publication number: 20030197382Abstract: A coupling ideally suited for sealing between components such as a fluoropolymer valve body (50) and a fluoropolymer manifold (52) or for coupling tubing end portions, utilizes structure on said components for defining the sealing surfaces. In a preferred embodiment, the coupling comprises a male protruding portion (62), a recessed female receiving portion (64), and a clamping means. The clamping means (92) has an inner threaded surface for engaging a correspondingly threaded portion of the male protruding portion. The male protruding portion is shaped, generally, as a converging rounded conical frustum (65.1) having an exterior surface, a primary sealing surface, a first stop surface (78), a second cooperating stop surface, and a fluid flow duct. The fluid flow duct is preferably concentrically positioned. The recessed portion has a circular perimeter, an inwardly projecting annular ring (74), a first cooperating stop surface, a second stop (82) surface, and a fluid flow duct.Type: ApplicationFiled: November 25, 2002Publication date: October 23, 2003Inventors: Steven A Fischer, Michael A Stein, Jeffrey C Kubesh, Todd J Edlund, James Donoho, Eric Soderstrom, Michael Stoick