Patents by Inventor Peter Hobbs

Peter Hobbs 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: 6886573
    Abstract: A process for cleaning a deposit from an interior surface of a processing chamber includes generating a plasma from a cleaning gas including SO2F2 and contacting the interior surface with the plasma for a time sufficient to convert the deposit into a volatile product, thereby cleaning the deposit from the interior surface, in which the process is conducted in the absence of SF6. The deposits, which may be removed by the process of the invention, include silicone, silicone oxide, silicone nitride, tungsten, copper and aluminum.
    Type: Grant
    Filed: September 6, 2002
    Date of Patent: May 3, 2005
    Assignee: Air Products and Chemicals, Inc.
    Inventors: John Peter Hobbs, James Joseph Hart
  • Publication number: 20040045576
    Abstract: A process for cleaning a deposit from an interior surface of a processing chamber includes generating a plasma from a cleaning gas including SO2F2 and contacting the interior surface with the plasma for a time sufficient to convert the deposit into a volatile product, thereby cleaning the deposit from the interior surface, in which the process is conducted in the absence of SF6. The deposits, which may be removed by the process of the invention, include silicone, silicone oxide, silicone nitride, tungsten, copper and aluminum.
    Type: Application
    Filed: September 6, 2002
    Publication date: March 11, 2004
    Inventors: John Peter Hobbs, James Joseph Hart
  • Patent number: 6682585
    Abstract: An improved method of processing both primary and secondary nonferrous metal and alloys of said metals using a refining gas is provided. The improvement involves refining said non-ferrous metal and alloys with a gaseous mixture including at least one compound selected from the group consisting of ClF3, ClF, COF2, F3COF, CF2(OF)2, SO2F2, NF3, SO2ClF, SOF2, SOF4, NOF, F2 and SF4.
    Type: Grant
    Filed: January 16, 2002
    Date of Patent: January 27, 2004
    Assignee: Air Products and Chemicals, Inc.
    Inventors: John Peter Hobbs, James Francis Heffron, Zbigniew Zurecki
  • Patent number: 6521018
    Abstract: An improved method of processing a nonferrous metal and alloys of said metal using a blanketing gas having a global warming potential is provided. The improvement involves reducing the global warming potential of the blanketing gas by blanketing the nonferrous metal and alloys with a gaseous mixture including at least one compound selected from the group consisting of COF2, CF3COF, (CF3)2CO, F3COF, F2C(OF)2, SO2F2, NF3, SO2ClF, SOF2, SOF4, NOF, F2 and SF4.
    Type: Grant
    Filed: February 9, 2001
    Date of Patent: February 18, 2003
    Assignee: Air Products and Chemicals, Inc.
    Inventors: John Peter Hobbs, James Francis Heffron, Andrew Joseph Woytek, Zbigniew Zurecki
  • Publication number: 20020166413
    Abstract: An improved method of processing both primary and secondary nonferrous metal and alloys of said metals using a refining gas having a global warming potential is provided. The improvement involves reducing said global warming potential of said refining gas by refining said non-ferrous metal and alloys with a gaseous mixture including at least one compound selected from the group consisting of ClF3, ClF, COF2, F3COF, CF2(OF)2, SO2F2, NF3, SO2ClF, SOF2, SOF4, NOF, F2 and SF4.
    Type: Application
    Filed: January 16, 2002
    Publication date: November 14, 2002
    Inventors: John Peter Hobbs, James Francis Heffron, Zbigniew Zurecki
  • Patent number: 6462142
    Abstract: An apparatus and method are used to modify the surface chemistry of an article. The article to be surface treated has at least a surface region that includes at least one polymer. The method comprises the steps of placing one or more articles into a closed reaction chamber which is evacuated to a negative pressure. After evacuation, a treatment gas is rapidly injected into the reaction chamber, the treatment gas having an essentially predetermined composition comprising one or more components which are reactive with the articles within the reaction chamber. The treatment gas is allowed to react with the articles within the closed reaction chamber for a predetermined period of time. The treatment gas is then removed from within the reaction chamber and replaced with an inert gas at about atmospheric pressure. Finally, the treated articles are removed from the treatment chamber.
    Type: Grant
    Filed: November 3, 1999
    Date of Patent: October 8, 2002
    Assignee: Air Products and Chemicals, Inc.
    Inventors: John Peter Hobbs, Philip Bruce Henderson
  • Patent number: 6398844
    Abstract: An improved method of processing a molten non-ferrous metal and alloys of the metal using a blanketing gas having a global warming potential is provided. The improvement involves reducing the global warming potential of the blanketing gas by blanketing the molten non-ferrous metal and alloys with a gaseous mixture including at least one compound selected from the group consisting of SO2F2, NF3, SO2CLF, SOF4, and NOF.
    Type: Grant
    Filed: February 7, 2000
    Date of Patent: June 4, 2002
    Assignee: Air Products and Chemicals, Inc.
    Inventors: John Peter Hobbs, James Francis Heffron, Andrew Joseph Woytek
  • Publication number: 20010027702
    Abstract: An improved method of processing a nonferrous metal and alloys of said metal using a blanketing gas having a global warming potential is provided. The improvement involves reducing the global warming potential of the blanketing gas by blanketing the nonferrous metal and alloys with a gaseous mixture including at least one compound selected from the group consisting of COF2, CF3COF, (CF3)2CO, F3COF, F2C(OF)2, SO2F2, NF3, SO2ClF, SOF2, SOF4, NOF, F2 and SF4.
    Type: Application
    Filed: February 9, 2001
    Publication date: October 11, 2001
    Inventors: John Peter Hobbs, James Francis Heffron, Andrew Joseph Woytek, Zbigniew Zurecki
  • Patent number: 5770135
    Abstract: The present invention discloses an improved process for producing plastic containers with excellent resistance to permeation by solvents such as hydrocarbons, hydrocarbon fuels, and hydrocarbon fuels with organic additives including lower alkanols and ethers consistently and reliably. The process is related to a treatment of plastic containers in a controlled manner with fluorine containing gases while blow molding them. In the process of the present invention, an article of manufacture, a container, is formed and subjected to fluorination by exposure to a fluorination gas. After the fluorination, the container is quenched by exposing the container to a fluorine reactive gas to react with the fluorine, thereby converting the fluorine to a less reactive gas.
    Type: Grant
    Filed: July 1, 1996
    Date of Patent: June 23, 1998
    Assignee: Air Products and Chemicals, Inc.
    Inventors: John Peter Hobbs, James Francis DeiTos, Madhu Anand
  • Patent number: 5691016
    Abstract: The present invention discloses an improved process for producing plastic containers with excellent resistance to permeation by solvents such as hydrocarbons, hydrocarbon fuels, and hydrocarbon fuels with organic additives including lower alkanols and ethers consistently and reliably. The process is related to a multi-step treatment of plastic containers in a controlled manner with fluorine containing gases while blow molding them. In the process of the present invention, a parison is formed from a pre-heated thermoplastic material, expanded within a closed mold by means of an inflating gas for conforming the parison to the shape of the mold, and subjected to multiple fluorination treatment steps to effect fluorination of the interior surface of the parison. In the first step of the multi-step fluorination treatment the parison is pressurized with a reactive gas containing from about 0.05 to about 0.
    Type: Grant
    Filed: January 25, 1996
    Date of Patent: November 25, 1997
    Assignee: Air Products and Chemicals, Inc.
    Inventor: John Peter Hobbs