Patents by Inventor Dale K. Stone

Dale K. Stone 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).

  • Publication number: 20090003979
    Abstract: Techniques for handling substrates are disclosed. In one particular exemplary embodiment, the techniques may be realized as a substrate support. The substrate support may comprise a mounting portion. The substrate support may also comprise a wall extending from the mounting portion, wherein the wall may form a generally enclosed area and may have a contact surface at a distal end.
    Type: Application
    Filed: June 29, 2007
    Publication date: January 1, 2009
    Applicant: Varian Semiconductor Equipment Associates, Inc.
    Inventors: Dale K. Stone, Lyudmila Stone, Julian G. Blake, Suneethi Gudapati
  • Publication number: 20080239614
    Abstract: Electrostatic clamping devices and methods for reducing contamination to a workpiece coupled to an electrostatic clamping device are disclosed. According to an embodiment an electrostatic clamping device for coupling a workpiece comprises: an embossment portion on a surface of a body to contact the workpiece; and at least two electrodes within the body; wherein the two electrodes are separated by a separation portion below the embossment portion.
    Type: Application
    Filed: March 26, 2007
    Publication date: October 2, 2008
    Inventors: Julian G. Blake, Dale K. Stone, Lyudmila Stone, David Suuronen
  • Patent number: 7205556
    Abstract: An ion beam implanter includes ion beam forming and directing apparatus and an implantation station where workpieces are implanted with ions from an ion beam. The beam travels along an evacuated path from an ion source to the implantation station. A flexible bellows couples the implantation station to the beam forming and directing apparatus permitting the implantation station to be pivoted with respect to the beam forming and directing apparatus and thereby change an implantation orientation of the workpieces with respect to the ion beam. A replaceable, flexible bellows liner is disposed within an interior region of the bellows to reduce the volume of implantation byproducts deposited on an interior surface of the bellows.
    Type: Grant
    Filed: October 1, 2004
    Date of Patent: April 17, 2007
    Assignee: Axcelis Technologies, Inc.
    Inventors: Lyudmila Stone, Scott T. Barusso, Dale K. Stone, Alexander S. Perel
  • Patent number: 7173260
    Abstract: An ion implanter having a source, a workpiece support and a transport system for delivering ions from the source to an ion implantation chamber that contains the workpiece support. The implanter includes one or more removable inserts mounted to an interior of either the transport system or the ion implantation chamber for collecting material entering either the transport system or the ion implantation chamber due to collisions between ions and the workpiece within the ion implantation chamber during ion processing of the workpiece. A temperature control coupled to the one or more removable inserts for maintaining the temperature of the insert at a controlled temperature to promote formation of a film on said insert during ion treatment due to collisions between ions and said workpiece.
    Type: Grant
    Filed: December 22, 2004
    Date of Patent: February 6, 2007
    Assignee: Axcelis Technologies, Inc.
    Inventors: Maria J. Anc, Dale K. Stone, Christopher T. Reddy
  • Patent number: 7151658
    Abstract: An electrostatic clamp for securing a semiconductor wafer during processing. The electrostatic clamp includes a base member, a first dielectric layer, a second dielectric layer having a gas pressure distribution micro-groove network formed therein, a gas gap positioned between a backside of a semiconductor wafer and the second dielectric layer, and a pair of high voltage electrodes positioned between the first dielectric layer and the second dielectric layer.
    Type: Grant
    Filed: April 22, 2003
    Date of Patent: December 19, 2006
    Assignee: Axcelis Technologies, Inc.
    Inventors: Peter L. Kellerman, Victor Benveniste, Michel Pharand, Dale K. Stone
  • Publication number: 20040212946
    Abstract: An electrostatic clamp for securing a semiconductor wafer during processing. The electrostatic clamp comprises a base member, a resistive layer, a dielectric layer including a gas pressure distribution micro-groove network, a gas gap positioned between a backside of a semiconductor wafer and the dielectric layer, and a pair of high voltage electrodes positioned between the resistive layer and the dielectric layer. The electrostatic clamp can further comprise at least one ground electrode positioned between the resistive layer and the dielectric layer that provides shielding for the gas pressure distribution micro-groove network. The electrostatic clamp is characterized by a heat transfer coefficient of greater than or about 200 mW/Kcm2, a response time of less than or about 1 second, and gas leakage of less than or about 0.5 sccm.
    Type: Application
    Filed: April 22, 2003
    Publication date: October 28, 2004
    Inventors: Peter L. Kellerman, Victor Benveniste, Michel Pharand, Dale K. Stone
  • Patent number: 6583428
    Abstract: The invention provides apparatus by which a cooling gas is supplied from a stationary source to the back side of batch ion implanter workpieces being implanted in a rotating or spinning batch implanter process disk. The cooling gas provides improved heat transfer from the workpieces to the process disk, which may be advantageously combined with circulation of cooling fluid through passages in the process disk to remove heat therefrom. The invention further includes a rotary feedthrough employed to transfer the cooling gas from a stationary housing to a gas chamber in a rotating shaft which spins the batch implanter process disk. In addition, a seal apparatus is provided which seals the cooling gas applied to the back sides of the workpieces from the vacuum in which the front sides of the workpieces are implanted.
    Type: Grant
    Filed: September 26, 2000
    Date of Patent: June 24, 2003
    Assignee: Axcelis Technologies, Inc.
    Inventors: David J. Chipman, Bryan C. Lagos, Robert J. Mitchell, Gary Rosen, Dale K. Stone
  • Patent number: 5670217
    Abstract: A method of capturing and removing contaminant particles moving within an evacuated interior region of an ion beam implanter is disclosed. The steps of the method include: providing a particle collector having a surface to which contaminant particles readily adhere; securing the particle collector to the implanter such that particle adhering surface is in fluid communication to the contaminant particles moving within the interior region; and removing the particle collector from the implanter after a predetermined period of time.
    Type: Grant
    Filed: December 9, 1996
    Date of Patent: September 23, 1997
    Assignee: Eaton Corporation
    Inventors: Julian G. Blake, Robert Becker, David Chipman, Mary Jones, Lyudmila Menn, Frank Sinclair, Dale K. Stone
  • Patent number: 5656092
    Abstract: A method of capturing and removing contaminant particles moving within an evacuated interior region of an ion beam implanter is disclosed. The steps of the method include: providing a particle collector having a surface to which contaminant particles readily adhere; securing the particle collector to the implanter such that particle adhering surface is in fluid communication to the contaminant particles moving within the interior region; and removing the particle collector from the implanter after a predetermined period of time.
    Type: Grant
    Filed: December 18, 1995
    Date of Patent: August 12, 1997
    Assignee: Eaton Corporation
    Inventors: Julian G. Blake, Robert Becker, David Chipman, Mary Jones, Lyudmila Menn, Frank Sinclair, Dale K. Stone
  • Patent number: 5436790
    Abstract: A wafer position and clamp sensor. A circuit monitors capacitance between two electrodes within a wafer support. With no wafer on the support, the capacitance falls in one range, with the wafer in place but not clamped, the capacitance falls in a second range and with the wafer held in place by an electrostatic attraction the capacitance falls in a third range. The sensed capacitance is converted to a frequency and then a DC voltage level that can easily be sensed and used to confirm wafer placement and then confirm wafer clamping.
    Type: Grant
    Filed: January 15, 1993
    Date of Patent: July 25, 1995
    Assignee: Eaton Corporation
    Inventors: Julian G. Blake, Weilin Tu, Dale K. Stone, Scott C. Holden