Patents by Inventor John Sirman

John Sirman 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: 8619406
    Abstract: This invention relates to substrate supports, e.g., coated electrostatic chucks, having a dielectric multilayer formed thereon; dielectric multilayers that provide erosive and corrosive barrier protection in harsh environments such as plasma treating vessels used in semiconductor device manufacture; process chambers, e.g., deposition chambers, for processing substrates; methods for protecting substrate supports; and methods for producing substrate supports and electronic devices. The dielectric multilayer comprises (a) an undercoat dielectric layer comprising a metal oxide or metal nitride formed on a surface; and (b) a topcoat dielectric layer comprising a metal oxide formed on the undercoat dielectric layer. The topcoat dielectric layer has an aluminum oxide content of less than about 1 weight percent. The topcoat dielectric layer has a corrosion resistance and/or plasma erosion resistance greater than the corrosion resistance and/or plasma erosion resistance of the undercoat dielectric layer.
    Type: Grant
    Filed: May 27, 2011
    Date of Patent: December 31, 2013
    Assignee: FM Industries, Inc.
    Inventors: Jaeyong Cho, John Sirman
  • Publication number: 20120141661
    Abstract: This invention relates to substrate supports, e.g., coated electrostatic chucks, having a dielectric multilayer formed thereon; dielectric multilayers that provide erosive and corrosive barrier protection in harsh environments such as plasma treating vessels used in semiconductor device manufacture; process chambers, e.g., deposition chambers, for processing substrates; methods for protecting substrate supports; and methods for producing substrate supports and electronic devices. The dielectric multilayer comprises (a) an undercoat dielectric layer comprising a metal oxide or metal nitride formed on a surface; and (b) a topcoat dielectric layer comprising a metal oxide formed on the undercoat dielectric layer. The topcoat dielectric layer has an aluminum oxide content of less than about 1 weight percent. The topcoat dielectric layer has a corrosion resistance and/or plasma erosion resistance greater than the corrosion resistance and/or plasma erosion resistance of the undercoat dielectric layer.
    Type: Application
    Filed: May 27, 2011
    Publication date: June 7, 2012
    Inventors: Jaeyong Cho, John Sirman
  • Publication number: 20100272982
    Abstract: This invention relates to thermal spray coatings on a metal or non-metal substrate. The thermal spray coating comprises a partially or fully stabilized ceramic coating, e.g., yttria stabilized zirconia coating, and has sufficiently high thermodynamic phase stability to provide corrosion and/or erosion resistance to the substrate. This invention also relates to methods of protecting metal and non-metal substrates by applying the thermal spray coatings. The coatings are useful, for example, in the protection of integrated circuit manufacturing equipment, internal chamber components, and electrostatic chuck manufacture.
    Type: Application
    Filed: October 20, 2009
    Publication date: October 28, 2010
    Inventors: Graeme Dickinson, John Sirman, Adil Ashary, Christopher Petorak, Neill Jean McDill
  • Patent number: 7384452
    Abstract: A method of heating a fluid utilizing a process heater having one or more first combustion zones and one or more second combustion zones. The combustion of a fuel is divided between the first and second combustion zones. The oxygen is provided for combustion within the first combustion zone by one or more oxygen transport membranes that contribute between about 50 and 99 percent of the stoichiometric amount of oxygen required for complete combustion of the fuel passing through the process heater. A supplemental or secondary oxidant is introduced into second combustion zone to complete combustion of the fuel and thereby produce a flue gas stream containing between about 1 and 3 percent oxygen to ensure complete combustion of the fuel. In this manner, the surface area of the oxygen transport membranes may be reduced below the surface area that otherwise would be required if 100 percent of the oxygen were contributed by the oxygen transport membranes.
    Type: Grant
    Filed: December 9, 2005
    Date of Patent: June 10, 2008
    Assignee: Praxair Technology, Inc.
    Inventors: John Sirman, Leonard H. Switzer, Bart Antonie van Hassel, M. Mushtaq Ahmed
  • Publication number: 20070134604
    Abstract: A method of heating a fluid utilizing a process heater having one or more first combustion zones and one or more second combustion zones. The combustion of a fuel is divided between the first and second combustion zones. The oxygen is provided for combustion within the first combustion zone by one or more oxygen transport membranes that contribute between about 50 and 99 percent of the stoichiometric amount of oxygen required for complete combustion of the fuel passing through the process heater. A supplemental or secondary oxidant is introduced into second combustion zone to complete combustion of the fuel and thereby produce a flue gas stream containing between about 1 and 3 percent oxygen to ensure complete combustion of the fuel. In this manner, the surface area of the oxygen transport membranes may be reduced below the surface area that otherwise would be required if 100 percent of the oxygen were contributed by the oxygen transport membranes.
    Type: Application
    Filed: December 9, 2005
    Publication date: June 14, 2007
    Inventors: John Sirman, Leonard Switzer, Bart van Hassel, M. Ahmed