Patents by Inventor John T. Felts

John T. Felts 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: 6112695
    Abstract: A gas inlet, which also serves as a counter electrode, is located inside of a vacuum chamber made of an electrically insulating material. A container is mounted on a mandrel mounted on the gas inlet. The chamber is evacuated to a subatmospheric pressure. A process gas is then introduced into the container through the gas inlet. The process gas is ionized by coupling RF power to a main electrode located adjacent an exterior surface of the chamber and to the gas inlet which deposits a plasma enhanced chemical vapor deposition (PECVD) thin film onto the interior surface of the container.
    Type: Grant
    Filed: October 8, 1996
    Date of Patent: September 5, 2000
    Assignee: Nano Scale Surface Systems, Inc.
    Inventor: John T. Felts
  • Patent number: 6015595
    Abstract: An apparatus for forming a film on a substrate includes a gas inlet and an insert attached to the gas inlet, the insert including a deposition source material such as lithium. To form the film on the substrate, the substrate is mounted in a vacuum chamber. After the vacuum chamber is pumped clown to a subatmospheric pressure, a first process gas such as argon is provided through the gas inlet and insert and into a plasma region proximate the substrate. Power is then coupled to generate a plasma inside of the insert which heats the insert and causes the deposition source material to vaporize. The deposition source material vapor is mixed with a plasma polymerizable material in the plasma region proximate the substrate causing a plasma enhanced chemical vapor deposition (PECVD) thin film such as silicon oxide including the deposition source material (e.g. lithium) to be deposited on the substrate.
    Type: Grant
    Filed: May 28, 1998
    Date of Patent: January 18, 2000
    Inventor: John T. Felts
  • Patent number: 5904952
    Abstract: A method of depositing a hard silicon oxide based film is provided by controllably flowing a gas stream including an organosilicon compound into a plasma. The organosilicon compound is preferably combined with oxygen and helium and at least a portion of the plasma is preferably magnetically confined adjacent to a substrate during the depositing, most preferably by an unbalanced magnetron. These silicon oxide based films may be reproducibly deposited on small or large substrates with preselected properties.
    Type: Grant
    Filed: August 1, 1997
    Date of Patent: May 18, 1999
    Assignee: The BOC Group, Inc.
    Inventors: Eugene S. Lopata, John T. Felts
  • Patent number: 5516555
    Abstract: Films are coated on substrates, useful for applications such as packaging, having a substantially continuous inorganic matrix in which organosilicon moieties are discontinuously dispersed. The inorganic matrix is formed by evaporating an inorganic source within a evacuated chamber while at the same time flowing vaporized organosilicon into the chamber adjacent to an electrically isolated substrate.
    Type: Grant
    Filed: April 18, 1995
    Date of Patent: May 14, 1996
    Assignee: The BOC Group, Inc.
    Inventor: John T. Felts
  • Patent number: 5434008
    Abstract: Films are coated on substrates, useful for applications such as packaging, having a substantially continuous inorganic matrix in which organosilicon moieties are discontinuously dispersed. The inorganic matrix is formed by evaporating an inorganic source within a evacuated chamber while at the same time flowing vaporized organosilicon into the chamber adjacent to an electrically isolated substrate.
    Type: Grant
    Filed: November 8, 1993
    Date of Patent: July 18, 1995
    Assignee: The BOC Group, Inc.
    Inventor: John T. Felts
  • Patent number: 5364665
    Abstract: A plasma treating apparatus is useful for coating substrates with thin films having vapor barrier properties at relatively rapid deposition rates. The apparatus comprises an evacuable chamber, an electrically powered electrode defining a plasma-facing surface within the chamber, and a shield spaced a distance .DELTA. transverse to the plasma-facing surface. During plasma treatments, the plasma is confined to within distance .DELTA. while a substrate is continuously fed through the confined plasma.
    Type: Grant
    Filed: October 25, 1993
    Date of Patent: November 15, 1994
    Assignee: The BOC Group, Inc.
    Inventors: John T. Felts, Hood Chatham, III, Joseph Countrywood, Robert J. Nelson
  • Patent number: 5224441
    Abstract: A plasma treating apparatus is useful for coating substrates with thin films having vapor barrier properties at relatively rapid deposition rates. The apparatus comprises an evacuable chamber, an electrically powered electrode defining a plasma-facing surface within the chamber, and a shield spaced a distance .DELTA. transverse to the plasma-facing surface. During plasma treatments, the plasma is confined to within distance .DELTA. while a substrate is continuously fed through the confined plasma.
    Type: Grant
    Filed: September 27, 1991
    Date of Patent: July 6, 1993
    Assignee: The BOC Group, Inc.
    Inventors: John T. Felts, Hood Chatham, III, Joseph Countrywood, Robert J. Nelson
  • Patent number: 4888199
    Abstract: In a process of depositing a thin film onto a surface of a substrate with the use of a plasma, wherein the plasma optical emission is monitored, analyzed, and the results used to automatically control the nature of the plasma in order to control the characteristics of the deposited thin film. One aspect of the emission that is detected is the intensity of each of two emission lines of different wavelength bands from the same plasma species, the intensities being ratioed and the ratio compared to a predetermined value known to provide a resulting film with uniform and repeatable characteristics. This ratio is also related to the average electron temperature of the plasma, which can be calculated from it. Additionally, the intensity of another emission line from another of the plasma species may be measured and ratioed to one of the foregoing line intensities if additional control is desired.
    Type: Grant
    Filed: May 9, 1988
    Date of Patent: December 19, 1989
    Assignee: The BOC Group, Inc.
    Inventors: John T. Felts, Eugene S. Lopata
  • Patent number: 4847469
    Abstract: A vaporizing apparatus delivers precisely controlled, substantially continuous and monitored vapor flows for uses such as in plasma enhanced vapor deposition. The vaporizing apparatus includes a fluid passageway along which are a pumping device, a vaporizing device, and a flowing device, all in fluid communication with the passageway. The vaporizing device vaporizes liquid pumped from the pumping device and includes a heat sink layer, a heated layer, and a portion of the passageway sandwiched therebetween. The vaporizing apparatus can sustain a flow of organosilicon vapor at a flow rate of about 1 to about 100 SCCM for as long as desired.
    Type: Grant
    Filed: July 15, 1987
    Date of Patent: July 11, 1989
    Assignee: The BOC Group, Inc.
    Inventors: James J. Hofmann, Robert R. Hoffman, John T. Felts