Patents by Inventor Walter J. Robertson

Walter J. Robertson 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: 11395997
    Abstract: Systems for producing, applying and evaluating coating compositions are disclosed. An automatic color matching system includes an automatic coating component dispenser, a container, a mixer for mixing the components of the coating composition and a solvent, an automatic pressurization station to apply pressure to the mixed coating composition, and a robotic arm to transport the container to and from the mixer. A coating composition dispensing system includes a computer to provide a target formulation for a coating composition, an automated component dispenser containing the components of the coating composition, a container positionable adjacent to the component dispenser to receive the components of the coating composition, and an automated component sensor to measure the amounts of each of the components dispensed into the container.
    Type: Grant
    Filed: April 19, 2021
    Date of Patent: July 26, 2022
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Mark D. Lewis, Walter J. Robertson, Mary Kimbro, Nathan L. Goodnow
  • Publication number: 20210237010
    Abstract: Systems for producing, applying and evaluating coating compositions are disclosed. An automatic color matching system includes an automatic coating component dispenser, a container, a mixer for mixing the components of the coating composition and a solvent, an automatic pressurization station to apply pressure to the mixed coating composition, and a robotic arm to transport the container to and from the mixer. A coating composition dispensing system includes a computer to provide a target formulation for a coating composition, an automated component dispenser containing the components of the coating composition, a container positionable adjacent to the component dispenser to receive the components of the coating composition, and an automated component sensor to measure the amounts of each of the components dispensed into the container.
    Type: Application
    Filed: April 19, 2021
    Publication date: August 5, 2021
    Applicant: PPG Industries Ohio, Inc.
    Inventors: Mark D. Lewis, Walter J. Robertson, Mary Kimbro, Nathan L. Goodnow
  • Patent number: 10981128
    Abstract: Systems for producing, applying and evaluating coating compositions are disclosed. An automatic color matching system includes an automatic coating component dispenser, a container, a mixer for mixing the components of the coating composition and a solvent, an automatic pressurization station to apply pressure to the mixed coating composition, and a robotic arm to transport the container to and from the mixer. A coating composition dispensing system includes a computer to provide a target formulation for a coating composition, an automated component dispenser containing the components of the coating composition, a container positionable adjacent to the component dispenser to receive the components of the coating composition, and an automated component sensor to measure the amounts of each of the components dispensed into the container.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: April 20, 2021
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Mark D. Lewis, Walter J. Robertson, Mary Kimbro, Nathan Goodnow
  • Publication number: 20180078914
    Abstract: Systems for producing, applying and evaluating coating compositions are disclosed. An automatic color matching system includes an automatic coating component dispenser, a container, a mixer for mixing the components of the coating composition and a solvent, an automatic pressurization station to apply pressure to the mixed coating composition, and a robotic arm to transport the container to and from the mixer. A coating composition dispensing system includes a computer to provide a target formulation for a coating composition, an automated component dispenser containing the components of the coating composition, a container positionable adjacent to the component dispenser to receive the components of the coating composition, and an automated component sensor to measure the amounts of each of the components dispensed into the container.
    Type: Application
    Filed: November 17, 2017
    Publication date: March 22, 2018
    Inventors: Mark D. Lewis, Walter J. Robertson, Mary Kimbro, Nathan Goodnow
  • Patent number: 9849431
    Abstract: Systems and methods for producing, applying and evaluating coating compositions are disclosed. The amounts of components contained in the coating compositions may be monitored, along with processing parameters when the coating compositions are applied to various substrates. In certain embodiments, the characteristics of a produced sample coating are compared with the characteristics of a target or reference coating to determine if they are sufficiently matched.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: December 26, 2017
    Assignee: PPG industries Ohio, Inc.
    Inventors: Mark D. Lewis, Walter J. Robertson, Mary Kimbro, Nathan Goodnow
  • Patent number: 9312424
    Abstract: A photovoltaic module can be produced by suspending a photovoltaic cell with a front side of the photovoltaic cell facing upward, positioning a backsheet and a first encapsulant layer underneath the suspended photovoltaic cell, lowering the suspended photovoltaic cell into contact with the first encapsulant layer wherein a back side of the photovoltaic cell contacts the first encapsulant layer, applying a second encapsulant layer over at least the front side of the photovoltaic cell, positioning a front transparency onto the second encapsulant layer, and curing the first encapsulant layer and the second encapsulant layer.
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: April 12, 2016
    Assignee: PPG industries Ohio, Inc.
    Inventors: Gereme Hensel, Steven Wirtz, Walter J Robertson
  • Patent number: 9144816
    Abstract: A panel carrier system and method for coating panels with the carrier system are disclosed. The carrier comprises a base and protective cover with an enclosure that protects the base when coating compositions are applied to the panels. The carrier system and coated panels may be transported to a curing location, followed by removal and evaluation of the coated panels.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: September 29, 2015
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Mark D. Lewis, Walter J. Robertson, Mary Park, Nathan Goodnow, Joseph S. Szul, Jr.
  • Publication number: 20140017392
    Abstract: Systems and methods for producing, applying and evaluating coating compositions are disclosed. The amounts of components contained in the coating compositions may be monitored, along with processing parameters when the coating compositions are applied to various substrates. In certain embodiments, the characteristics of a produced sample coating are compared with the characteristics of a target or reference coating to determine if they are sufficiently matched.
    Type: Application
    Filed: July 13, 2012
    Publication date: January 16, 2014
    Applicant: PPG Industries Ohio, Inc.
    Inventors: Mark D. Lewis, Walter J. Robertson, Mary Kimbro, Nathan Goodnow
  • Publication number: 20130156957
    Abstract: A panel carrier system and method for coating panels with the carrier system are disclosed. The carrier comprises a base and protective cover with an enclosure that protects the base when coating compositions are applied to the panels. The carrier system and coated panels may be transported to a curing location, followed by removal and evaluation of the coated panels.
    Type: Application
    Filed: December 16, 2011
    Publication date: June 20, 2013
    Applicant: PPG Industries Ohio, Inc.
    Inventors: Mark D. Lewis, Walter J. Robertson, Mary Park, Nathan Goodnow, Joseph S. Szul, JR.
  • Patent number: 6949289
    Abstract: The present invention provides an at least partially coated fiber strand comprising a plurality of glass fibers having a coating composition on at least a portion of at least one of the glass fibers, the coating composition comprising at least one coating comprising greater than 20 weight percent on a total solids basis of a plurality of particles selected from inorganic particles, organic hollow particles, composite particles, and mixtures of any of the foregoing, wherein the plurality of particles have a Mohs' hardness value which does not exceed the Mohs' hardness value of the glass fibers.
    Type: Grant
    Filed: November 3, 2000
    Date of Patent: September 27, 2005
    Assignee: PPG Industries ohio, Inc.
    Inventors: Ernest L. Lawton, Vedagiri Velpari, William B. Rice, Walter J. Robertson, Bruce E. Novich, Xiang Wu, Kami Lammon-Hilinski
  • Patent number: 6809046
    Abstract: The present invention provides non-heat cleaned glass fiber fabrics comprising resin compatible coatings that offer higher tensile strengths than corresponding fabrics that have been heat cleaned and silane finished. These fabrics can be used in a wide variety of applications, such as reinforcements for composites such as printed circuit boards. In one nonlimiting embodiment, the invention provides a non-heat cleaned fabric comprising a plurality of fiber strands in a warp direction and a fill direction, each fiber strand comprising a plurality of E-glass fiber, and having a resin compatible coating composition on at least a portion of a surface of at least one fiber strand, wherein the fabric has a tensile strength of at least 267 Newtons when measured in the warp direction or fill direction. Although not required, the fabric also has a tensile strength of at least 1.5 times that of a corresponding fabric that is heat cleaned by heating the corresponding fabric to a temperature of at least 380° C.
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: October 26, 2004
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Vedagiri Velpari, Ernest L. Lawton, William B. Rice, Walter J. Robertson, Kami Lammon-Hilinski, Bruce E. Novich, Xiang Wu
  • Patent number: 6593255
    Abstract: A fabric comprising at least one fiber strand comprising a plurality of fibers and having a resin compatible coating composition on at least a surface of the at least one fiber strand, wherein the at least one fiber strand has an Air Jet Transport Drag Force value of greater than 100,000 gram force per gram mass of strand as determined by a needle air jet nozzle unit having an internal air jet chamber having a diameter of 2 millimeters and a nozzle exit tube having a length of 20 centimeters at a strand feed rate of 274 meters per minute and an air pressure of 310 kiloPascals.
    Type: Grant
    Filed: November 3, 2000
    Date of Patent: July 15, 2003
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Ernest L. Lawton, Vedagiri Velpari, William B. Rice, Walter J. Robertson, Bruce E. Novich, Xiang Wu, Kami Lammon-Hilinski
  • Publication number: 20020193027
    Abstract: The present invention provides a fabric comprising fiber strands having a coating that is more soluble in a resin matrix material than conventional slashing and/or silane finishes. As a result, the coating does not have to be removed prior to combining the coated fiber strand with a resin matrix material. These fabrics can be used in a wide variety of applications, such as reinforcements for composites, such as printed circuit boards.
    Type: Application
    Filed: February 28, 2001
    Publication date: December 19, 2002
    Inventors: David E. Dana, Vedagiri Velpari, Kami Lammon-Hilinski, Ernest L. Lawton, Bruce E. Novich, William B. Rice, Walter J. Robertson, Xiang Wu
  • Patent number: 6419981
    Abstract: Methods for inhibiting abrasive wear of a fiber strand comprising at least one glass fiber by sliding contact with surface asperities of a solid object, comprising (a) applying a composition to at least a portion of a surface of at least one glass fiber of a glass fiber strand; (b) at least partially drying the composition to form a sized glass fiber strand having a residue of the composition upon at least a portion of the surface of the at least one class fiber; and (c) sliding at least a portion of the glass fiber strand to contact surface asperities of a solid object, the surface asperities having a hardness value which is greater than a hardness value of the at least one glass fiber, such that abrasive wear of the at least one glass fiber of the glass fiber strand by contact with the surface asperities of the solid object is inhibited by the inorganic solid lubricant particles.
    Type: Grant
    Filed: July 20, 2000
    Date of Patent: July 16, 2002
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Bruce E. Novich, Kami Lammon-Hilinski, Walter J. Robertson, Xiang Wu, Vedagiri Velpari, Ernest L. Lawton, William B. Rice
  • Publication number: 20020086598
    Abstract: Prepregs for an electronic support comprising: (a) a matrix material; and (b) at least one non-degreased fabric comprising at least one strand comprising a plurality of fibers, wherein at least a portion of the fabric comprises a coating which is compatible with the matrix material, and wherein the at least one strand has a shape factor of greater than 1, measured in the warp direction or the fill direction of the at least one non-degreased fabric. Laminates for an electronic support comprising: (a) a matrix material; and (b) at least one non-degreased fabric comprising at least one strand comprising a plurality of fibers, wherein at least a portion of the fabric comprises a coating which is compatible with the matrix material, and wherein the at least one strand has a shape factor of greater than 1, measured in the warp direction or the fill direction of the at least one non-degreased fabric. Electronic supports and electronic circuit boards comprising at least one prepreg or at least one laminate.
    Type: Application
    Filed: February 28, 2001
    Publication date: July 4, 2002
    Inventors: Vedagiri Velpari, Kami Lammon-Hilinski, Ernest L. Lawton, Bruce E. Novich, William B. Rice, Walter J. Robertson, Xiang Wu
  • Publication number: 20020058449
    Abstract: At least partially clad laminates comprising: (a) a cladding material; (b) a matrix material; and (c) at least one non-degreased fabric comprising at least one strand comprising a plurality of fibers, wherein at least a portion of the at least one non-degreased fabric comprises a coating which is compatible with the matrix material, and wherein at least a portion of the at least partially clad laminate has a roughness factor less than 8 microns using a one ounce clad, measured in either the warp direction or the fill direction of the at least one non-degreased. Electronic supports and electronic circuit boards comprising at least one at least partially clad laminate.
    Type: Application
    Filed: February 28, 2001
    Publication date: May 16, 2002
    Inventors: Vedagiri Velpari, Kami Lammon-Hilinski, Ernest L. Lawton, Bruce E. Novich, William B. Rice, Walter J. Robertson, Xiang Wu
  • Publication number: 20020055313
    Abstract: The present invention provides non-heat cleaned glass fiber fabrics comprising resin compatible coatings that offer higher tensile strengths than corresponding fabrics that have been heat cleaned and silane finished. These fabrics can be used in a wide variety of applications, such as reinforcements for composites such as printed circuit boards.
    Type: Application
    Filed: February 28, 2001
    Publication date: May 9, 2002
    Inventors: Vedagiri Velpari, Ernest L. Lawton, William B. Rice, Walter J. Robertson, Kami Lammon-Hilinski, Bruce E. Novich, Xiang Wu
  • Patent number: 6231533
    Abstract: One aspect of the present invention is an orthopedic splint for temporarily supporting an injured body limb, comprising: a non-woven mat at least partially impregnated with a curable resin matrix material; a first resin impermeable layer extending along at least a portion of at least one major surface of the mat; a second resin impermeable layer extending along at least along a portion of an opposing major surface of the mat; and a curing agent permeable cover surrounding the mat and the first and second resin impermeable layers. In one particular embodiment of the invention, the resin matrix material comprises a moisture curable, ambient air dried resin matrix material, the mat comprises a needled mat comprising randomly oriented continuous glass fibers and having a weight, prior to resin impregnation, of between about 0.15 to about 2.44 kilograms per square meter, the first resin impermeable layer is a heat insulating layer, and the cover is a water permeable cover.
    Type: Grant
    Filed: May 21, 1999
    Date of Patent: May 15, 2001
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Bruce E. Novich, Walter J. Robertson
  • Patent number: 4933307
    Abstract: Porous, silica-rich shapes have improved strength and abrasion resistance by leaching the precursor glass shape in preconditioned acid having silica ion and at least one common ion that is also present in the precursor glass shape. The precursor glass shapes have shapes such as fibers, hollow fibers, tubes, rods, beads, hollow spheres and plates and compositions having 30-75 volume percent silica and at least 10-65 volume percent nonsiliceous acid extractable components. Preconditioning of the acid solution results from a pretreatment of the acid with compounds that dissociate into the ions when added to the acid solution or with shapes, particles or fragments of glass compositions different from or similar to the glass shape to be leached so long as the glass composition has extractable material to provide the silica ion and at least one common ion.
    Type: Grant
    Filed: April 21, 1988
    Date of Patent: June 12, 1990
    Assignee: PPG Industries, Inc.
    Inventors: William P. Marshall, Joseph J. Hammel, Herbert W. Barch, Roy D. Hegedus, Walter J. Robertson
  • Patent number: 4842620
    Abstract: A hollow, porous, silica-rich fiber, a process for producing same, and a process for enriching at least one gas from a gaseous mixture utilizing at least one fiber to result in gas separations with good permeability and good selectivity. The fiber is non-crystalline and has pore sizes having a range of 1 to around 50 Angstroms in diameter and a mean pore size of around less than 20 Angstroms in diameter and a filament diameter in the range of 1 to around 250 microns and a wall thickness in the range of around 1 to 50 microns. The fibers with a fine pore structure and thin walls are produced by forming hollow glass fibers hindered or fully phase-separable boron and/or alkali metal glass composition, by attenuation from melt at speeds in the range of 500 ft/min to around 30,000 ft/min. The phase-separable glass fibers are heat treated to yield limited phase-separated hollow glass fibers and these fibers are leached to extract acid and/or water soluble components.
    Type: Grant
    Filed: December 1, 1987
    Date of Patent: June 27, 1989
    Assignee: PPG Industries, Inc.
    Inventors: Joseph J. Hammel, Walter J. Robertson, William P. Marshall, Herbert W. Barch, Balbhadra Daas, Michael A. Smoot, Richard P. Beaver