Patents Assigned to AT&T Technologies, Inc.
  • Patent number: 7419704
    Abstract: The invention is a coating and a method for applying coatings to fiber reinforced composite materials. A first polymeric layer, free of fibers and particulate, coats a fiber reinforced polymer substrate. The first layer joins the fiber reinforced polymer substrate to a second polymeric layer. The second polymeric layer contains a polymeric matrix and a particulate within the polymeric matrix. Finally, at least one thermally sprayed material coats the second polymeric layer to form an adherent multi-layer coating attached to the fiber reinforced.
    Type: Grant
    Filed: August 18, 2005
    Date of Patent: September 2, 2008
    Assignee: Praxair S. T. Technology, Inc.
    Inventors: Richard Kent Passman, David A. McPherson
  • Patent number: 7390561
    Abstract: A metal surface infused composite object made by thermal spraying a metal material onto a release agent coated pattern, followed by vacuum infusion at least a portion of the metal material layer with a resin and then separating the composite infused metal object from the pattern.
    Type: Grant
    Filed: October 2, 2003
    Date of Patent: June 24, 2008
    Assignee: Praxair S. T. Technology, Inc.
    Inventors: Grigoriy Grinberg, Matthew M. Shade
  • Patent number: 7235143
    Abstract: A precious metal sputter target has a composition selected from the group consisting of platinum, palladium, rhodium, iridium, ruthenium, osmium and single-phase alloys thereof. The sputter target's grain structure is at least about 99 percent recrystallized and has a grain size of less than about 200 ?m for improving sputter uniformity. The cryogenic method for producing these sputter targets is also effective for improving sputter performance for silver and gold sputter targets.
    Type: Grant
    Filed: August 8, 2002
    Date of Patent: June 26, 2007
    Assignee: Praxair S.T. Technology, Inc.
    Inventors: Andrew C. Perry, Paul S. Gilman, Wendell Stuber, Binu Mathew
  • Patent number: 7220706
    Abstract: A method for the enhanced melt-textured growth of superconducting crystals is disclosed for a sample having a first material capable of exhibiting superconducting properties. The sample is heated above a peritectic temperature of the first material, cooled below the peritectic temperature, and is subsequently subjected to a plurality of temperature spikes in which the sample is rapidly reheated above the peritectic temperature and recooled below the peritectic temperature to produce a superconducting crystalline structure substantially free of secondary nucleations. The resulting crystal is a superconducting crystalline structure comprising a plurality of bands formed in succession around a seed material. Each band has a non-uniform microstructure from an inner portion to an outer portion of the band.
    Type: Grant
    Filed: May 14, 2003
    Date of Patent: May 22, 2007
    Assignee: Praxair S.T. Technology, Inc.
    Inventor: Scott H. Streett
  • Patent number: 7107820
    Abstract: The invention generally relates to a system and method for integrated gas delivery and leak detection to one or more applications. The system includes at least one application site, a process conduit extending from a process gas source site to the application site, a first and second process flow control at the process conduit, and a first pressure sensor. Also included in the system is a microprocessor that is in electronic communication with the flow controls and the first pressure sensor, wherein the microprocessor is programmed to respond to an application standby request by performing a pressure decay test, including closing the second process flow control and pressurizing a portion of the system by opening the first process flow control.
    Type: Grant
    Filed: May 2, 2003
    Date of Patent: September 19, 2006
    Assignee: Praxair S.T. Technology, Inc.
    Inventors: David W. Nunnally, Douglas J. Gifford
  • Patent number: 7081148
    Abstract: The sputter target includes a tantalum body having tantalum grains formed from consolidating tantalum powder and a sputter face. The sputter face has an atom transport direction for transporting tantalum atoms away from the sputter face for coating a substrate. The tantalum grains have at least a 40 percent (222) direction orientation ratio and less than a 15 percent (110) direction orientation ratio in an atom transport direction away from the sputter face for increasing sputtering uniformity, the tantalum body being free of (200)–(222) direction banding detectable by Electron Back-Scattering Diffraction and wherein the sputter target has a purity of at least 99.99 (%) percent.
    Type: Grant
    Filed: March 26, 2004
    Date of Patent: July 25, 2006
    Assignee: Praxair S.T. Technology, Inc.
    Inventors: Holger J. Koenigsmann, Paul S. Gilman
  • Patent number: 7045172
    Abstract: This invention provides a unique gas shield or shroud surrounding the effluent of a thermal spray device that effectively can extend the working distance or standoff between the thermal spray device and the surface being coated. This invention provides a method of spraying materials, including ceramic materials and reactive materials, at a long standoff and a method of controlling the temperature of the effluent being deposited using heated gas shield.
    Type: Grant
    Filed: July 31, 2003
    Date of Patent: May 16, 2006
    Assignee: Praxair S.T. Technology, Inc.
    Inventors: Thomas A. Taylor, John E. Jackson
  • Patent number: 6982116
    Abstract: The invention is a coating and a method for applying coatings to fiber reinforced composite materials. A first polymeric layer, free of fibers and particulate, coats a fiber reinforced polymer substrate. The first layer joins the fiber reinforced polymer substrate to a second polymeric layer. The second polymeric layer contains a polymeric matrix and a particulate within the polymeric matrix. Finally, at least one thermally sprayed material coats the second polymeric layer to form an adherent multi-layer coating attached to the fiber reinforced.
    Type: Grant
    Filed: February 18, 2000
    Date of Patent: January 3, 2006
    Assignee: Praxair S.T. Technology, Inc.
    Inventors: Richard Kent Passman, David A. McPherson
  • Patent number: 6942763
    Abstract: An aluminum alloy sputter target having a sputter target face for sputtering the sputter target is disclosed. The sputter target face has a textured-metastable grain structure. The textured-metastable grain structure has a grain orientation ratio of at least 35 percent (200) orientation. The textured-metastable grain structure is stable during sputtering of the sputter target. The textured-metastable grain structure has a grain size of less than 5 ?m. The method forms aluminum alloy sputter targets by first cooling an aluminum alloy target blank to a temperature of less than ?50° C. Then deforming the cooled aluminum alloy target blank introduces plastic strain into the target blank and reduces the grain size of the grains to form a textured-metastable grain structure. Finally, finishing the aluminum alloy target blank forms a finished sputter target that maintains the textured-metastable grain structure of the finished sputter target.
    Type: Grant
    Filed: April 11, 2003
    Date of Patent: September 13, 2005
    Assignee: Praxair S.T. Technology, Inc.
    Inventors: Andrew C. Perry, Paul S. Gilman, Jaak Van den Sype
  • Patent number: 6896748
    Abstract: The sputter target has a composition selected from the group consisting of high-purity copper and copper-base alloys. The sputter target's grain structure is at least about 99 percent recrystallized; and the sputter target's face has a grain orientation ratio of at least about 10 percent each of (111), (200), (220) and (311). In addition, the sputter target has a grain size of less than about 10 ?m for improving sputter uniformity and reducing sputter target arcing.
    Type: Grant
    Filed: July 18, 2002
    Date of Patent: May 24, 2005
    Assignee: Praxair S.T. Technology, Inc.
    Inventors: Andrew C. Perry, Paul S. Gilman
  • Patent number: 6863995
    Abstract: A method for using a novel ternary nickel-gold-phosphorus brazing alloy for joining nickel-based components together and the assembly so formed.
    Type: Grant
    Filed: May 16, 2003
    Date of Patent: March 8, 2005
    Assignee: Praxair S.T. Technology, Inc.
    Inventor: Thomas A. Sandin
  • Patent number: 6835251
    Abstract: The high-purity aluminum sputter target is at least 99.999 weight percent aluminum and has a grain structure. The grain structure is at least 99 percent recrystallized and has a grain size of less than 200 &mgr;m. The method forms high-purity aluminum sputter targets by first cooling a high-purity target blank to a temperature of less than −50° C. and then deforming the cooled high-purity target blank introduces intense strain into the high-purity target. After deforming, recrystallizing the grains at a temperature below 200° C. forms a target blank having at least 99 percent recrystallized grains. Finally, finishing at a low temperature sufficient to maintain the fine grain size of the high-purity target blank forms a finished sputter target.
    Type: Grant
    Filed: August 16, 2002
    Date of Patent: December 28, 2004
    Assignee: Praxair S.T. Technology, Inc.
    Inventors: Andrew C. Perry, Paul S. Gilman, Thomas J. Hunt
  • Publication number: 20040216514
    Abstract: The invention generally relates to a system and method for integrated gas delivery and leak detection to one or more applications. The system includes at least one application site, a process conduit extending from a process gas source site to the application site, a first and second process flow control at the process conduit, and a first pressure sensor.
    Type: Application
    Filed: May 2, 2003
    Publication date: November 4, 2004
    Applicant: Praxair S. T. Technology, Inc.
    Inventors: David W. Nunnally, Douglas J. Gifford
  • Patent number: 6780526
    Abstract: The invention relates to a novel thermal spray process for the deposition of coatings with a graded or layered composition and the coated articles produced thereby. More particularly, the invention relates to feeding mixtures of coating materials to a thermal spray device and continuously or intermittently changing the composition of the deposited coatings by changing the thermal spray operating parameters. The continuous or intermittent change in the composition of the coating material during deposition creates a graded or layered coating structure.
    Type: Grant
    Filed: October 28, 2002
    Date of Patent: August 24, 2004
    Assignee: Praxair S.T. Technology, Inc.
    Inventors: William A. Payne, Michael W. Vickrey, Anthony J. Stavros
  • Patent number: 6770154
    Abstract: The sputter target includes a tantalum body having tantalum grains formed from consolidating tantalum powder and a sputter face. The sputter face has an atom transport direction for transporting tantalum atoms away from the sputter face for coating a substrate. The tantalum grains have at least a 40 percent (222) direction orientation ratio and less than a 15 percent (110) direction orientation ratio in an atom transport direction away from the sputter face for increasing sputtering uniformity.
    Type: Grant
    Filed: September 18, 2001
    Date of Patent: August 3, 2004
    Assignee: Praxair S.T. Technology, Inc.
    Inventors: Holger J. Koenigsmann, Paul S. Gilman
  • Patent number: 6754062
    Abstract: The invention is a hybrid chuck for securing workpieces with an electrostatic charge. The hybrid chuck includes a dielectric base for supporting the hybrid chuck. The dielectric base has a top surface and a conductive layer covers at least a portion of the top surface of the dielectric base. The conductive layer is conductive for receiving a current that creates an electrostatic charge and is non-metallic for maintaining the electrostatic charge without significant eddy current losses in the presence of dynamic electromagnetic fields. The top working surface covers the conductive layer and is flat for holding workpieces upon the receiving of the current to create the electrostatic charge in the conductive layer.
    Type: Grant
    Filed: February 27, 2002
    Date of Patent: June 22, 2004
    Assignee: Praxair S.T. Technology, Inc.
    Inventors: Joseph Logan, John R. Miller, Mahmood Naim, Robert E. Tompkins
  • Patent number: 6736714
    Abstract: An endless belt for a belt type polishing machine comprises a support fabric and a polymer layer of relatively low hardness. The polymer layer is formed with drainage grooves. The support fabric may comprise a non woven or woven material, or a membrane with oriented reinforcing yarns. A further version comprises a spiral-link fabric supporting a woven or non woven layer carrying the polymer layer. The polymer layer may be a double layer, the upper of which is either harder or softer than the lower layer.
    Type: Grant
    Filed: September 30, 1997
    Date of Patent: May 18, 2004
    Assignee: Praxair S.T. Technology, Inc.
    Inventor: Walter Dudovicz
  • Patent number: 6733641
    Abstract: A target assembly in which the sputtering material is not soldered or otherwise metallurgically bonded to a backing plate. Rather, the target, which is homogeneously manufactured of sputtering material, is mechanically coupled (e.g., with bolts) to an adapter, which is itself permanently affixed to the chamber. As a result, the target can be easily uncoupled from the chamber and replaced, without also requiring removal and replacement of a backing plate.
    Type: Grant
    Filed: June 25, 1997
    Date of Patent: May 11, 2004
    Assignee: Praxair S. T. Technology, Inc.
    Inventors: David P. Strauss, Thomas J. Hunt, Paul S. Gilman
  • Patent number: 6708870
    Abstract: The method forms a sputter target assembly by attaching a sputter target to an insert and applying a bond metal layer between the insert and a backing plate. Then pressing the insert and backing plate together forms a solid state bond with the bond metal layer, attaches the insert to the backing plate and forms at least one cooling channel between the insert and the backing plate. A filler metal secures the outer perimeter of the insert to the backing plate in order to eliminate leakage from the cooling channel during sputtering of the sputter target.
    Type: Grant
    Filed: May 24, 2002
    Date of Patent: March 23, 2004
    Assignee: Praxair S.T. Technology, Inc.
    Inventors: Holger J. Koenigsmann, Andrew C. Perry, Thomas J. Hunt, Paul S. Gilman
  • Patent number: 6703334
    Abstract: The process produces a stabilized zirconia powder by first contacting zirconium basic carbonate particles with a stabilizer compound. This reacts the zirconium basic carbonate particles with the stabilizer compound through heterogeneous contact to form a stabilized zirconia precursor. The stabilizer compound is for stabilizing a phase structure selected from the group consisting of tetragonal phase, cubic phase and mixtures of tetragonal and cubic phases. And calcining the stabilized zirconia precursor removes gaseous by-products and forms the stabilized zirconia powder. The stabilized zirconia powder has a phase structure selected from the group consisting of tetragonal, cubic and mixtures of tetragonal and cubic.
    Type: Grant
    Filed: December 17, 2001
    Date of Patent: March 9, 2004
    Assignee: Praxair S.T. Technology, Inc.
    Inventors: Vladimir Belov, Irina Belov