Patents by Inventor Kurt Karl Christenson

Kurt Karl Christenson 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: 8859435
    Abstract: A method of removing materials, and preferably photoresist, from a substrate comprises dispensing a liquid sulfuric acid composition comprising sulfuric acid and/or its desiccating species and precursors and having a water/sulfuric acid molar ratio of no greater than 5:1 onto an material coated substrate in an amount effective to substantially uniformly coat the material coated substrate. The substrate is preferably heated to a temperature of at least about 90° C., either before, during or after dispensing of the liquid sulfuric acid composition. After the substrate is at a temperature of at least about 90° C., the liquid sulfuric acid composition is exposed to water vapor in an amount effective to increase the temperature of the liquid sulfuric acid composition above the temperature of the liquid sulfuric acid composition prior to exposure to the water vapor. The substrate is then preferably rinsed to remove the material.
    Type: Grant
    Filed: December 11, 2012
    Date of Patent: October 14, 2014
    Assignee: TEL FSI, Inc.
    Inventors: Kurt Karl Christenson, Ronald J. Hanestad, Patricia Ann Ruether, Thomas J. Wagener
  • Patent number: 8394228
    Abstract: A method of removing materials, and preferably photoresist, from a substrate comprises dispensing a liquid sulfuric acid composition comprising sulfuric acid and/or its desiccating species and precursors and having a water/sulfuric acid molar ratio of no greater than 5:1 onto an material coated substrate in an amount effective to substantially uniformly coat the material coated substrate. The substrate is preferably heated to a temperature of at least about 90° C., either before, during or after dispensing of the liquid sulfuric acid composition. After the substrate is at a temperature of at least about 90° C., the liquid sulfuric acid composition is exposed to water vapor in an amount effective to increase the temperature of the liquid sulfuric acid composition above the temperature of the liquid sulfuric acid composition prior to exposure to the water vapor. The substrate is then preferably rinsed to remove the material.
    Type: Grant
    Filed: September 8, 2009
    Date of Patent: March 12, 2013
    Assignee: TEL FSI, Inc.
    Inventors: Kurt Karl Christenson, Ronald J. Hanestad, Patricia Ann Ruether, Thomas J. Wagener
  • Patent number: 8104425
    Abstract: A method for electroless plating of a substrate is provided that comprises exposing an electroless plating reagent comprising a metal to be plated and at least one reducing agent to a solid phase Activation Material to form an activated electroless plating reagent prior to application of the electroless plating reagent to the substrate. The activated electroless plating reagent is applied to a substrate in the process chamber under conditions to cause the metal of the electroless plating reagent to deposit on the substrate. Systems and modules are also described.
    Type: Grant
    Filed: November 21, 2008
    Date of Patent: January 31, 2012
    Assignee: FSI International, Inc.
    Inventor: Kurt Karl Christenson
  • Publication number: 20100018951
    Abstract: A method of removing materials, and preferably photoresist, from a substrate comprises dispensing a liquid sulfuric acid composition comprising sulfuric acid and/or its desiccating species and precursors and having a water/sulfuric acid molar ratio of no greater than 5:1 onto an material coated substrate in an amount effective to substantially uniformly coat the material coated substrate. The substrate is preferably heated to a temperature of at least about 90° C., either before, during or after dispensing of the liquid sulfuric acid composition. After the substrate is at a temperature of at least about 90° C., the liquid sulfuric acid composition is exposed to water vapor in an amount effective to increase the temperature of the liquid sulfuric acid composition above the temperature of the liquid sulfuric acid composition prior to exposure to the water vapor. The substrate is then preferably rinsed to remove the material.
    Type: Application
    Filed: September 8, 2009
    Publication date: January 28, 2010
    Applicant: FSI INTERNATIONAL MATERIAL FROM SUBSTRATES
    Inventors: Kurt Karl Christenson, Ronald J. Hanestad, Patricia Ann Ruether, Thomas J. Wagener
  • Publication number: 20090304995
    Abstract: An initially hydrophobic surface comprising fluoropolymer is treated to provide the surface with hydrophilic properties. A hydrophobic surface comprising fluoropolymer is physically treated to impart a rough texture thereto, thereby providing the surface with hydrophilic properties. In an alternative method, a roughened surface is treated with a sulfur-based acid, thereby providing the surface with hydrophilic properties In yet another method, a non-roughened surface fluoropolymer surface is treated with a sulfur-based acid for a time sufficient for the surface to exhibit hydrophilic properties. Products made by these processes are also described.
    Type: Application
    Filed: June 4, 2009
    Publication date: December 10, 2009
    Applicant: FSI INTERNATIONAL, INC.
    Inventor: Kurt Karl Christenson
  • Patent number: 7592264
    Abstract: A method of removing materials, and preferably photoresist, from a substrate comprises dispensing a liquid sulfuric acid composition comprising sulfuric acid and/or its desiccating species and precursors and having a water/sulfuric acid molar ratio of no greater than 5:1 onto an material coated substrate in an amount effective to substantially uniformly coat the material coated substrate. The substrate is preferably heated to a temperature of at least about 90° C., either before, during or after dispensing of the liquid sulfuric acid composition. After the substrate is at a temperature of at least about 90° C., the liquid sulfuric acid composition is exposed to water vapor in an amount effective to increase the temperature of the liquid sulfuric acid composition above the temperature of the liquid sulfuric acid composition prior to exposure to the water vapor. The substrate is then preferably rinsed to remove the material.
    Type: Grant
    Filed: November 22, 2006
    Date of Patent: September 22, 2009
    Assignee: FSI International, Inc.
    Inventors: Kurt Karl Christenson, Ronald J. Hanestad, Patricia Ann Ruether, Thomas J. Wagener
  • Publication number: 20090078195
    Abstract: A method for electroless plating of a substrate is provided that comprises exposing an electroless plating reagent comprising a metal to be plated and at least one reducing agent to a solid phase Activation Material to form an activated electroless plating reagent prior to application of the electroless plating reagent to the substrate. The activated electroless plating reagent is applied to a substrate in the process chamber under conditions to cause the metal of the electroless plating reagent to deposit on the substrate. Systems and modules are also described.
    Type: Application
    Filed: November 21, 2008
    Publication date: March 26, 2009
    Inventor: Kurt Karl Christenson
  • Patent number: 7476616
    Abstract: A method for electroless plating of a substrate is provided that comprises exposing an electroless plating reagent comprising a metal to be plated and at least one reducing agent to a solid phase Activation Material to form an activated electroless plating reagent prior to application of the electroless plating reagent to the substrate. The activated electroless plating reagent is applied to a substrate in the process chamber under conditions to cause the metal of the electroless plating reagent to deposit on the substrate. Systems and modules are also described.
    Type: Grant
    Filed: December 13, 2005
    Date of Patent: January 13, 2009
    Assignee: FSI International, Inc.
    Inventor: Kurt Karl Christenson
  • Patent number: 7425505
    Abstract: The present invention provides improvements to the use of silyating agents in semiconductor processing. More particularly, the silyating agents may be provided in combination with a substantially non-flammable ether, so that the combination is substantially non-flammable. Additionally, the silyating agent may be utilized in vapor form, or applied in conjunction with the electromagnetic radiation. Each of these embodiments can enhance the usability of the silyating agent, i.e., by rendering the silyating agent more safe, more easily utilized in a variety of processing equipment and/or by enhancing the passivation efficacy/efficiency of the silyating agent.
    Type: Grant
    Filed: July 19, 2004
    Date of Patent: September 16, 2008
    Assignee: FSI International, Inc.
    Inventors: Philip G. Clark, Kurt Karl Christenson, Brent D. Schwab
  • Patent number: 7156927
    Abstract: A method is provided for treating an object. In this method, a treating chemical is introduced to a bath under conditions effective to at least partially envelop the object to be treated in eddy currents of the bath liquid, followed by introducing non-treating liquid into the bath under conditions effective to at least partially envelop the object to be treated in eddy currents of the bath liquid. An apparatus for carrying out this method is also provided. This method is particularly beneficial for objects used in precision manufacturing by treatment with solutions, such as semiconductor wafers or similar substrates.
    Type: Grant
    Filed: April 3, 2002
    Date of Patent: January 2, 2007
    Assignee: FSI International, Inc.
    Inventors: Kurt Karl Christenson, Nam Pyo Lee, Gary William Michalko, Christina Ann Rathman
  • Publication number: 20030188765
    Abstract: A method is provided for treating an object. In this method, a treating chemical is introduced to a bath under conditions effective to at least partially envelop the object to be treated in eddy currents of the bath liquid, followed by introducing non-treating liquid into the bath under conditions effective to at least partially envelop the object to be treated in eddy currents of the bath liquid. An apparatus for carrying out this method is also provided.
    Type: Application
    Filed: April 3, 2002
    Publication date: October 9, 2003
    Inventors: Kurt Karl Christenson, Nam Pyo Lee, Gary William Michalko, Christina Ann Rathman