Patents by Inventor David Palsulich

David Palsulich 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: 11742230
    Abstract: A method of contaminant detection comprises exposing a wafer comprising one or more contaminants to microdroplets of an oxidizer to form an oxide on a surface of the wafer, exposing the oxide to an etchant to remove the oxide and leave the one or more contaminants on the surface of the wafer, and determining a composition of the one or more contaminants. Additional methods and related tools are also disclosed.
    Type: Grant
    Filed: November 23, 2021
    Date of Patent: August 29, 2023
    Assignee: Micron Technology, Inc.
    Inventors: David Palsulich, Nicholas A. Wieber
  • Publication number: 20220084858
    Abstract: A method of contaminant detection comprises exposing a wafer comprising one or more contaminants to microdroplets of an oxidizer to form an oxide on a surface of the wafer, exposing the oxide to an etchant to remove the oxide and leave the one or more contaminants on the surface of the wafer, and determining a composition of the one or more contaminants. Additional methods and related tools are also disclosed.
    Type: Application
    Filed: November 23, 2021
    Publication date: March 17, 2022
    Inventors: David Palsulich, Nicholas A. Wieber
  • Patent number: 11211272
    Abstract: A method of contaminant detection comprises exposing a wafer comprising one or more contaminants to microdroplets of an oxidizer to form an oxide on a surface of the wafer, exposing the oxide to an etchant to remove the oxide and leave the one or more contaminants on the surface of the wafer, and determining a composition of the one or more contaminants. Additional methods and related tools are also disclosed.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: December 28, 2021
    Assignee: Micron Technology, Inc.
    Inventors: David Palsulich, Nicholas A. Wieber
  • Publication number: 20210090920
    Abstract: A method of contaminant detection comprises exposing a wafer comprising one or more contaminants to microdroplets of an oxidizer to form an oxide on a surface of the wafer, exposing the oxide to an etchant to remove the oxide and leave the one or more contaminants on the surface of the wafer, and determining a composition of the one or more contaminants. Additional methods and related tools are also disclosed.
    Type: Application
    Filed: September 25, 2019
    Publication date: March 25, 2021
    Inventors: David Palsulich, Nicholas A. Wieber
  • Patent number: 9196471
    Abstract: A horizontal scanner, a vertical scanner, and a dual-configuration scanner that is able to convert between a horizontal scanner and a vertical scanner is described herein.
    Type: Grant
    Filed: June 1, 2012
    Date of Patent: November 24, 2015
    Inventors: Yen Fui Choo, David Palsulich
  • Patent number: 8765000
    Abstract: The present disclosure suggests apparatus and methods that can be used to chemically process microfeature workpieces, e.g., semiconductor wafers. One implementation of the invention provides a method in which a surface of a microfeature workpiece is contacted with an etchant liquid. The wall of the processing chamber may be highly transmissive of an operative wavelength range of radiation, but the etchant liquid is absorptive of the operative wavelength range. The etchant liquid is heated by delivering radiation through the wall of a processing chamber. This permits processing chambers to be formed of materials (e.g., fluoropolymers) that cannot be used in conventional systems that must conduct heat through the wall of the processing chamber.
    Type: Grant
    Filed: July 9, 2010
    Date of Patent: July 1, 2014
    Assignee: Micron Technology, Inc.
    Inventors: David A. Palsulich, Ronald F. Baldner
  • Publication number: 20100276394
    Abstract: The present disclosure suggests apparatus and methods that can be used to chemically process microfeature workpieces, e.g., semiconductor wafers. One implementation of the invention provides a method in which a surface of a microfeature workpiece is contacted with an etchant liquid. The wall of the processing chamber may be highly transmissive of an operative wavelength range of radiation, but the etchant liquid is absorptive of the operative wavelength range. The etchant liquid is heated by delivering radiation through the wall of a processing chamber. This permits processing chambers to be formed of materials (e.g., fluoropolymers) that cannot be used in conventional systems that must conduct heat through the wall of the processing chamber.
    Type: Application
    Filed: July 9, 2010
    Publication date: November 4, 2010
    Applicant: MICRON TECHNOLOGY, INC.
    Inventors: David A. Palsulich, Ronald F. Baldner
  • Patent number: 7763548
    Abstract: The present disclosure suggests apparatus and methods that can be used to chemically process microfeature workpieces, e.g., semiconductor wafers. One implementation of the invention provides a method in which a surface of a microfeature workpiece is contacted with an etchant liquid. The wall of the processing chamber may be highly transmissive of an operative wavelength range of radiation, but the etchant liquid is absorptive of the operative wavelength range. The etchant liquid is heated by delivering radiation through the wall of a processing chamber. This permits processing chambers to be formed of materials (e.g., fluoropolymers) that cannot be used in conventional systems that must conduct heat through the wall of the processing chamber.
    Type: Grant
    Filed: August 6, 2003
    Date of Patent: July 27, 2010
    Assignee: Micron Technology, Inc.
    Inventors: David A. Palsulich, Ronald F. Baldner
  • Publication number: 20060191866
    Abstract: The present disclosure suggests apparatus and methods that can be used to chemically process microfeature workpieces, e.g., semiconductor wafers. One implementation of the invention provides a method in which a surface of a microfeature workpiece is contacted with an etchant liquid. The wall of the processing chamber may be highly transmissive of an operative wavelength range of radiation, but the etchant liquid is absorptive of the operative wavelength range. The etchant liquid is heated by delivering radiation through the wall of a processing chamber. This permits processing chambers to be formed of materials (e.g., fluoropolymers) that cannot be used in conventional systems that must conduct heat through the wall of the processing chamber.
    Type: Application
    Filed: April 27, 2006
    Publication date: August 31, 2006
    Applicant: Micron Technology, Inc.
    Inventors: David Palsulich, Ronald Baldner
  • Publication number: 20060071177
    Abstract: An enhanced transfer system that increases the accuracy and sensitivity of a measurement system is disclosed. In one embodiment, the transfer system includes transfer tubing that transports samples from a spray chamber to an ionizer in a mass spectrometer system. The transfer system also includes a transfer gas line that is connected to the transfer tubing. The transfer gas line supplies a gas that assists with the transferring of the samples from the spray chamber to the ionizer. In one embodiment, the transfer gas line is angled relative to a portion of the transfer tubing. In another embodiment, the transfer gas line is perpendicular relative to a portion of the transfer tubing. The injected gas increases the quantity and quality of the samples transferred to the mass spectrometry system, thereby increasing the overall accuracy and sensitivity of the measurement system.
    Type: Application
    Filed: November 21, 2005
    Publication date: April 6, 2006
    Inventors: David Palsulich, Eric Swanson, Larry Weston, Kevin Coyle
  • Patent number: 7002144
    Abstract: An enhanced transfer system that increases the accuracy and sensitivity of a measurement system is disclosed. In one embodiment, the transfer system includes transfer tubing that transports samples from a spray chamber to an ionizer in a mass spectrometer system. The transfer system also includes a transfer gas line that is connected to the transfer tubing. The transfer gas line supplies a gas that assists with the transferring of the samples from the spray chamber to the ionizer. In one embodiment, the transfer gas line is angled relative to a portion of the transfer tubing. In another embodiment, the transfer gas line is perpendicular relative to a portion of the transfer tubing. The injected gas increases the quantity and quality of the samples transferred to the mass spectrometry system, thereby increasing the overall accuracy and sensitivity of the measurement system.
    Type: Grant
    Filed: August 30, 1999
    Date of Patent: February 21, 2006
    Assignee: Micron Technology Inc.
    Inventors: David Palsulich, Eric Swanson, Larry Weston, Kevin Coyle
  • Publication number: 20050032390
    Abstract: The present disclosure suggests apparatus and methods that can be used to chemically process microfeature workpieces, e.g., semiconductor wafers. One implementation of the invention provides a method in which a surface of a microfeature workpiece is contacted with an etchant liquid. The wall of the processing chamber may be highly transmissive of an operative wavelength range of radiation, but the etchant liquid is absorptive of the operative wavelength range. The etchant liquid is heated by delivering radiation through the wall of a processing chamber. This permits processing chambers to be formed of materials (e.g., fluoropolymers) that cannot be used in conventional systems that must conduct heat through the wall of the processing chamber.
    Type: Application
    Filed: August 6, 2003
    Publication date: February 10, 2005
    Inventors: David Palsulich, Ronald Baldner