Patents Assigned to AT&T Technologies, Inc.
  • Patent number: 10801097
    Abstract: This invention relates to thermal spray coatings and processes onto non-smooth surfaces. The coating and processes can coat non-smooth surfaces without substantial degradation of the underlying surface texture or profile of the non-smooth surfaces so as to sufficiently preserve the underlying surface texture or profile. The ability for coating fractional coverage to maintain the surface profile while maintaining wear resistance is unprecedented by conventional thermal spray processes.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: October 13, 2020
    Assignee: Praxair S.T. Technology, Inc.
    Inventors: Michael S Brennan, Daming Wang, Ardy Kleyman
  • Patent number: 10533255
    Abstract: Novel slurry formulations and processes for forming improved protective coatings used in the hot section components of gas turbine engines are provided. The process includes a unique two-step deposition methodology whereby the required concentration of reactive element within an improved reactive element doped aluminide coating can be consistently produced in a reproducible manner.
    Type: Grant
    Filed: August 22, 2016
    Date of Patent: January 14, 2020
    Assignee: PRAXAIR S.T. TECHNOLOGY, INC.
    Inventors: Zhihong Tang, Kevin E Garing, James K Knapp, Albert Feuerstein, Thomas F Lewis, III
  • Patent number: 10407762
    Abstract: A novel dual layer mask formulation is provided. In particular, the mask has a unique composition that protects the integrity of an underlying chromide coating, prevents chromium depletion from the chromide coating and prevents a subsequent aluminide coating from being deposited thereon.
    Type: Grant
    Filed: August 22, 2016
    Date of Patent: September 10, 2019
    Assignee: PRAXAIR S. T. TECHNOLOGY, INC.
    Inventors: Zhihong Tang, Kevin E Garing
  • Patent number: 10156007
    Abstract: Unique and improved chromizing processes are disclosed. The processes involve forming localized chromizing coatings onto selected regions of a substrate. The chromium diffusion coatings are locally applied to selected regions of substrates in a controlled manner, in comparison to conventional chromizing processes, and further in a manner that produces less material waste and does not require diffusion-stop-off masking. Prior to or after a localized slurry chromizing process of the present invention, a layer of a platinum-group-metal (PGM) is applied to produce a PGM-modified chromium diffusion coating onto selected regions of a substrate. A second coating can be selectively applied onto other regions of the substrate.
    Type: Grant
    Filed: January 25, 2017
    Date of Patent: December 18, 2018
    Assignee: PRAXAIR S.T. TECHNOLOGY, INC.
    Inventors: Zhihong Tang, Kevin E Garing, Thomas D Findlay, Thomas F Lewis, III, James K Knapp, Jeffrey J McConnell
  • Patent number: 10023939
    Abstract: A unique sequence of steps is provided to reduce contaminants along one or more surfaces and faces of gold evaporative sources without deleteriously impacting the structure of the gold evaporative sources. Edges are deburred; contaminants are successfully removed therealong; and surface smoothness is substantially retained. The resultant gold evaporative source is suitable for use in evaporative processes as a precursor to gold film deposition without the occurrence or a substantial reduction in the likelihood of spitting by virtue of significantly reduced levels of contaminants, in comparison to gold evaporative sources subject to a standard cleaning protocol.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: July 17, 2018
    Assignee: PRAXAIR S.T. TECHNOLOGY, INC.
    Inventors: Wendell R. Stuber, Ernesto Aviles, Jaydeep Sarkar, Paul S. Gilman
  • Patent number: 9970094
    Abstract: Unique and improved chromium coatings derived from modified chromium-containing slurry formulations are disclosed. The slurry formulation includes a combination of a selected halide activator and buffer material that synergistically interact with each other to form chromium diffusion coatings with improved microstructure in comparison to chromium diffusion coatings produced from conventional chromizing processes. The coatings may be locally applied in a controlled manner with accuracy onto various parts, including those having internal sections with complex geometries, without masking any portion thereof.
    Type: Grant
    Filed: January 8, 2015
    Date of Patent: May 15, 2018
    Assignee: PRAXAIR S.T. TECHNOLOGY, INC.
    Inventors: Zhihong Tang, Kevin E. Garing, Thomas D. Findlay, Thomas F. Lewis, III, James K. Knapp
  • Patent number: 9957629
    Abstract: A modified electroplated nickel-based metallic alloy coating and method of forming the same is provided. The electroplated coatings exhibit unique microstructure and composition which improves performance over conventional metallic materials. The coatings have significantly higher strength at elevated service temperatures.
    Type: Grant
    Filed: August 26, 2015
    Date of Patent: May 1, 2018
    Assignee: PRAXAIR S.T. TECHNOLOGY, INC.
    Inventors: John Foster, Zhihong Tang, Kevin Garing, Bradley J. Burton, Thomas F. Lewis, III
  • Patent number: 9802233
    Abstract: A unique sequence of steps is provided to reduce contaminants along one or more surfaces and faces of gold evaporative sources without deleteriously impacting the structure of the gold evaporative sources. Edges are deburred; contaminants are successfully removed therealong; and surface smoothness is substantially retained. The resultant gold evaporative source is suitable for use in evaporative processes as a precursor to gold film deposition without the occurrence or a substantial reduction in the likelihood of spitting by virtue of significantly reduced levels of contaminants, in comparison to gold evaporative sources subject to a standard cleaning protocol.
    Type: Grant
    Filed: May 1, 2014
    Date of Patent: October 31, 2017
    Assignee: Praxair S. T. Technology, Inc.
    Inventors: Wendell R. Stuber, Ernesto Aviles, Jaydeep Sarkar, Paul S. Gilman
  • Patent number: 9789513
    Abstract: A modular, rotisserie type tooling fixture assembly for use in a coating operation and method of its use are disclosed. The tooling fixture assembly includes an arbor or shaft and a retaining base with a plurality of anchor members disposed in a prescribed radial orientation from the center of the retaining base, the anchor members are uniquely configured or adapted to retain a plurality of workpieces to be coated. The tooling fixture assembly further comprises a unique workpiece masking arrangement that employs a unitary masking cap having a plurality of solid walls or surfaces adapted to cover portions of the plurality of workpieces in a masking relationship.
    Type: Grant
    Filed: December 7, 2012
    Date of Patent: October 17, 2017
    Assignee: PRAXAIR S.T. TECHNOLOGY, INC.
    Inventors: Albert Feuerstein, Andrew Thomas Westfall, Thomas F. Lewis, III, David A. McPherson, Ardy Kleyman, Don Lemen
  • Patent number: 9771644
    Abstract: A method for applying an aluminide coating includes applying an aluminum-based slurry onto an elongated member. The elongate member is introduced through an opening of a component and positioned within a cavity of the component at a location that is spaced apart from the internal surfaces of the component. Heat is applied to generate vaporized aluminum which diffuses into the internal surfaces of the component. Aluminum reacts with the internal surfaces to form an aluminide coating.
    Type: Grant
    Filed: November 6, 2014
    Date of Patent: September 26, 2017
    Assignee: PRAXAIR S.T. TECHNOLOGY, INC.
    Inventors: Kevin E. Garing, Jeffrey J. McConnell, Carl Hugo Hutzler, III
  • Patent number: 9761420
    Abstract: The present invention relates to novel and improved high purity diffusion bonded copper (Cu) sputtering targets having a Cu purity level of 99.9999% (6N) or greater. The target assemblies of the present invention exhibit sufficient bond strength and microstructural homogeneity, both of which are properties previously considered mutually exclusive for conventional 6N Cu target assemblies. The grain structure is characterized by an absence of alloying elements and the bonded interface is generally flat without any type of interlayer or interlocking arrangement.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: September 12, 2017
    Assignee: PRAXAIR S.T. TECHNOLOGY, INC.
    Inventors: Jaydeep Sarkar, Paul Gilman
  • Patent number: 9731419
    Abstract: This invention relates to a robot programming method that is carried out at a first location (i.e., teaching station) and a second location (i.e., application station). The second location is different from the first location. At the first location, teach data is prepared to teach motions to a robot to drive an end effector through a series of desired path points along a desired path of motion with respect to the application station. The teach data comprises at least one of robot position data elements and at least one of robot motion pattern data elements. At the second location, teach data is communicated to the robot and the robot is programmed in accordance with the teach data to drive the end effector through the series of desired path points along the desired path of motion with respect to the application station. This invention also relates to a robot programming system. The robot programming method and system are useful, for example, in thermal spray coating applications.
    Type: Grant
    Filed: April 6, 2011
    Date of Patent: August 15, 2017
    Assignee: PRAXAIR S.T. TECHNOLOGY, INC.
    Inventor: Matthew Halsmer
  • Patent number: 9598775
    Abstract: A high surface finish, thermally stable, multilayer slurry-based overlay system suitable for use in a severe thermal environment is disclosed. The disclosed embodiments include a basecoat layer formed from a slurry comprising ceramic pigment filled phosphate-based binder, a second layer formed from a slurry comprising metal oxide pigment or ceramic oxide pigment filled phosphate-based binder, and an optional seal coat layer formed from a phosphate-based binder substantially free of pigments.
    Type: Grant
    Filed: June 11, 2012
    Date of Patent: March 21, 2017
    Assignee: PRAXAIR S.T. TECHNOLOGY, INC.
    Inventor: Irina Belov
  • Patent number: 9587302
    Abstract: Unique and improved chromizing processes are disclosed. The processes involve forming localized chromizing coatings onto selected regions of a substrate. The chromium diffusion coatings are locally applied to selected regions of substrates in a controlled manner, in comparison to conventional chromizing processes, and further in a manner that produces less material waste and does not require masking. A second coating can be selectively applied onto other regions of the substrate.
    Type: Grant
    Filed: January 8, 2015
    Date of Patent: March 7, 2017
    Assignee: PRAXAIR S.T. TECHNOLOGY, INC.
    Inventors: Zhihong Tang, Kevin E. Garing, Thomas D. Findlay, Thomas F. Lewis, III, James K. Knapp
  • Patent number: 9487854
    Abstract: This invention relates to thermally sprayed coatings having an amorphous-nanocrystalline-microcrystalline composition structure, said thermally sprayed coating comprising from about 1 to about 95 volume percent of an amorphous phase, from about 1 to about 80 volume percent of a nanocrystalline phase, and from about 1 to about 90 volume percent of a microcrystalline phase, and wherein said amorphous phase, nanocrystalline phase and microcrystalline phase comprise about 100 volume percent of said thermally sprayed coating. This invention also relates to methods for producing the coatings, thermal spray processes for producing the coatings, and articles coated with the coatings. The thermally sprayed coatings of this invention provide enhanced wear and corrosion resistance for articles used in severe environments (e.g., landing gears, airframes, ball valves, gate valves (gates and seats), pot rolls, and work rolls for paper processing).
    Type: Grant
    Filed: May 16, 2013
    Date of Patent: November 8, 2016
    Assignee: PRAXAIR S.T. TECHNOLOGY, INC.
    Inventors: Tetyana P. Shmyreva, James Knapp, Ardy Simon Kleyman
  • Patent number: 9394448
    Abstract: A novel chromate-free multi-layer coating system composed of a lithium-doped potassium silicate binder based basecoat composition that is sealed with an aluminum phosphate-based top coat composition is described. The multi-layer coating system exhibits superior corrosion and heat oxidation resistance which can replace traditional chromate-containing coating systems.
    Type: Grant
    Filed: March 13, 2015
    Date of Patent: July 19, 2016
    Assignee: PRAXAIR S.T. TECHNOLOGY, INC.
    Inventors: Irina Belov, Daryl G. Copeland
  • Patent number: 9371253
    Abstract: This invention relates to high purity yttria or ytterbia stabilized zirconia powders comprising from about 0 to about 0.15 weight percent impurity oxides, from about 0 to about 2 weight percent hafnium oxide (hafnia), from about 6 to about 25 weight percent yttrium oxide (yttria) or from about 10 to about 36 weight percent ytterbium oxide (ytterbia), and the balance zirconium oxide (zirconia). Thermal barrier coatings for protecting a component such as blades, vanes and seal surfaces of gas turbine engines, made from the high purity yttria or ytterbia stabilized zirconia powders, have a density greater than 88% of the theoretical density with a plurality of verticalzA macrocracks homogeneously dispersed throughout the coating to improve its thermal fatigue resistance.
    Type: Grant
    Filed: November 1, 2013
    Date of Patent: June 21, 2016
    Assignee: Praxair S.T. Technology, Inc.
    Inventors: Thomas Alan Taylor, Danny Lee Appleby, Albert Feuerstein, Ann Bolcavage, Neil Hitchman, James Munroe
  • Patent number: 9322101
    Abstract: A composition based on a certain chromium-free silicate-based binder is described. The one-part slurry composition is an aqueous solution of lithium-doped potassium silicate in combination with an aluminum or aluminum alloy powder. The one-part slurry composition produces a corresponding coating exhibiting improved performance at a reduced coating thickness.
    Type: Grant
    Filed: March 13, 2015
    Date of Patent: April 26, 2016
    Assignee: PRAXAIR S.T. TECHNOLOGY, INC.
    Inventors: Irina Belov, Daryl G. Copeland
  • Patent number: 9291264
    Abstract: This invention relates to thermal spray coatings, powders useful in deposition of the thermal spray coatings, methods of producing the powders, and uses of the thermal spray coatings, for example, coating of piston rings and cylinder liners of internal combustion engines. The coatings of this invention are applied by thermal spray deposition of a powder. The powder contains bimetallic carbides of chromium and molybdenum dispersed in a matrix metal. The matrix metal contains nickel/chromium/molybdenum.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: March 22, 2016
    Assignee: PRAXAIR S. T. TECHNOLOGY, INC.
    Inventors: William John Crim Jarosinski, Vladimir Belov
  • Patent number: 9222163
    Abstract: A layer system and a method for producing a component having such a layer system are provided. The layer system includes a substrate a substrate, at least one MCrX layer on the substrate, and a chromium-rich layer on or in the at least one MCrX layer. X includes at least one element selected from the group consisting of yttrium (Y), silicon (Si), aluminum (Al) and boron (B). M includes at least one element selected from the group consisting of nickel (Ni) and cobalt (Co).
    Type: Grant
    Filed: May 26, 2009
    Date of Patent: December 29, 2015
    Assignees: SIEMENS AKTIENGESELLSCHAFT, PRAXAIR S.T. TECHNOLOGIES INC.
    Inventors: Paul Box, Hugh Evans, Thomas Kircher, Thomas Lewis, Bruce McMordie, John Nicholls, Paul Padley, Nigel Simms, Jonathan Venezia, Paul Mathew Walker, Adrian Weatherill, Mick Whitehurst