Patents by Inventor Stephen Krause

Stephen Krause 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: 11404254
    Abstract: An ion source with an insertable target holder for holding a solid dopant material is disclosed. The insertable target holder includes a pocket or cavity into which the solid dopant material is disposed. When the solid dopant material melts, it remains contained within the pocket, thus not damaging or degrading the arc chamber. Additionally, the target holder can be moved from one or more positions where the pocket is at least partially in the arc chamber to one or more positions where the pocket is entirely outside the arc chamber. In certain embodiments, a sleeve may be used to cover at least a portion of the open top of the pocket.
    Type: Grant
    Filed: February 6, 2019
    Date of Patent: August 2, 2022
    Assignee: Varian Semiconductor Equipment Associates, Inc.
    Inventors: Shreyansh Patel, Graham Wright, Daniel Alvarado, Klaus Becker, Daniel R. Tieger, Stephen Krause
  • Publication number: 20200090916
    Abstract: An ion source with an insertable target holder for holding a solid dopant material is disclosed. The insertable target holder includes a pocket or cavity into which the solid dopant material is disposed. When the solid dopant material melts, it remains contained within the pocket, thus not damaging or degrading the arc chamber. Additionally, the target holder can be moved from one or more positions where the pocket is at least partially in the arc chamber to one or more positions where the pocket is entirely outside the arc chamber. In certain embodiments, a sleeve may be used to cover at least a portion of the open top of the pocket.
    Type: Application
    Filed: February 6, 2019
    Publication date: March 19, 2020
    Inventors: Shreyansh Patel, Graham Wright, Daniel Alvarado, Klaus Becker, Daniel R. Tieger, Stephen Krause
  • Publication number: 20190271068
    Abstract: The present invention relates to sputtering targets and other metal articles as well as methods of making the same. More particularly, the present invention relates to methods for forming powder metallurgy sputtering targets and other metallurgical articles made from metal powders that include spherical metal powders, and the resulting product.
    Type: Application
    Filed: February 27, 2019
    Publication date: September 5, 2019
    Applicant: Global Advanced Metals USA, Inc.
    Inventors: Craig M. Sungail, Aamir Dawood Abid, Stephen Krause
  • Patent number: 7887034
    Abstract: A method and clamp system for use on an ion implanter system for aligning a cathode and filament relative to one another in-situ are disclosed. The invention includes a clamp system having a clamp including a first clamp member separably coupled to a second clamp member, and an opening to a mount portion of one of the cathode and the filament in at least one of the clamp members. Each clamp member includes a surface to engage a mount portion of one of the cathode and the filament. The opening is adapted to receive a positioning tool to position the cathode and the filament relative to one another by moving the mount portion when the clamp is released. The mount portion may include a tool receiving member to facilitate accurate positioning.
    Type: Grant
    Filed: August 1, 2005
    Date of Patent: February 15, 2011
    Assignee: Varian Semiconductor Equipment Associates, Inc.
    Inventors: Stephen Krause, Eric R. Cobb, Russell Low
  • Publication number: 20080072413
    Abstract: A method and clamp system for use on an ion implanter system for aligning a cathode and filament relative to one another in-situ are disclosed. The invention includes a clamp system having a clamp including a first clamp member separably coupled to a second clamp member, and an opening to a mount portion of one of the cathode and the filament in at least one of the clamp members. Each clamp member includes a surface to engage a mount portion of one of the cathode and the filament. The opening is adapted to receive a positioning tool to position the cathode and the filament relative to one another by moving the mount portion when the clamp is released. The mount portion may include a tool receiving member to facilitate accurate positioning.
    Type: Application
    Filed: August 1, 2005
    Publication date: March 27, 2008
    Inventors: Stephen Krause, Eric R. Cobb, Russell Low
  • Publication number: 20070125955
    Abstract: Techniques for preventing parasitic beamlets from affecting ion implantation are disclosed. In one particular exemplary embodiment, the techniques may be realized as an apparatus for preventing parasitic beamlets from affecting ion implantation. The apparatus may comprise a controller that is configured to scan a spot beam back and forth, thereby forming an ion beam spanning a predetermined width. The apparatus may also comprise an aperture mechanism that, if kept stationary, allows the spot beam to pass through. The apparatus may further comprise a synchronization mechanism, coupled to the controller and the aperture mechanism, that is configured to cause the aperture mechanism to move in synchronization with the scanned spot beam, allowing the scanned spot beam to pass through but blocking one or more parasitic beamlets associated with the spot beam.
    Type: Application
    Filed: December 6, 2006
    Publication date: June 7, 2007
    Applicant: Varian Semiconductor Equipment Associates Inc.
    Inventors: Russell LOW, Jonathan England, Stephen Krause, Eric Hermanson
  • Publication number: 20070125957
    Abstract: Techniques for reducing effects of photoresist outgassing are disclosed. In one particular exemplary embodiment, the techniques may be realized as an apparatus for reducing effects of photoresist outgassing in an ion implanter. The apparatus may comprise a drift tube located between an end-station and an upstream beamline component. The apparatus may also comprise a first variable aperture between the drift tube and the end-station. The apparatus may further comprise a second variable aperture between the drift tube and the upstream beamline component. The first variable aperture and the second variable aperture can be adjusted to facilitate differential pumping.
    Type: Application
    Filed: December 6, 2006
    Publication date: June 7, 2007
    Applicant: Varian Semiconductor Equipment Associates, Inc.
    Inventors: Russell Low, Jonathan England, Stephen Krause, Eric Hermanson
  • Publication number: 20050025699
    Abstract: Methods to at least partially reduce a niobium oxide are described wherein the process includes mixing the niobium oxide and niobium powder to form a powder mixture that is then heat treated to form heat treated particles which then undergo reacting in an atmosphere which permits the transfer of oxygen atoms from the niobium oxide to the niobium powder, and at a temperature and for a time sufficient to form an oxygen reduced niobium oxide. Oxygen reduced niobium oxides having high porosity are also described as well as capacitors containing anodes made from the oxygen reduced niobium oxides.
    Type: Application
    Filed: May 19, 2004
    Publication date: February 3, 2005
    Inventors: David Reed, Sridhar Venigalla, Ricky Kitchell, Stephen Krause, Heather Enman, Dorran Schultz, Jeffrey Kerchner