Patents Represented by Attorney Robert P. Santandrea
  • Patent number: 8347651
    Abstract: A method is provided for separating or dividing strengthened glass articles, particularly strengthened glass sheets, into at least two pieces, one of which has a predetermined shape and/or dimension. A flaw is initiated in the glass at a depth that is greater than the depth of the strengthened surface layer of the glass, and a vent extending from the flaw is created at a vent depth that is greater than the depth of and outside the strengthened surface layer to at least partially separate the glass. In one embodiment, the vent is generated by treating the glass with a laser to heat the glass to a temperature in a range from about 50° C. below the strain point of the glass up to a temperature between the strain point and the anneal point of the glass. A glass article having at least one strengthened surface and at least one edge having an average edge strength of at least 200 MPa is also described.
    Type: Grant
    Filed: February 19, 2009
    Date of Patent: January 8, 2013
    Assignee: Corning Incorporated
    Inventors: Anatoli Anatolyevich Abramov, Sinue Gomez, Sergio Tsuda
  • Patent number: 8341976
    Abstract: A method of cutting a glass sheet that has been thermally or chemically strengthened along a predetermined line, axis, or direction with high speed and with minimum damage on the cut edges. The strengthened glass sheet may be an aluminoborosilicate glass material having at least one alkali metal oxide modifier, and the ratio Al 2 ? O 3 ? ( mol ? ? % ) + B 2 ? O 3 ? ( mol ? ? % ) ? ? modifiers ? ? ( mol ? ? % ) > 1. At least one damage line is formed within the strengthened glass sheet. The at least one damage line is formed outside the strengthened compressive stress surface layers and within the tensile stress layer of the strengthened glass sheet. The at least one damage line may be formed by laser treatment. A crack is initiated in the strengthened glass sheet and propagated along the at least one damage line to separate the strengthened glass sheet along the predetermined line, axis, or direction into at least two pieces.
    Type: Grant
    Filed: July 28, 2010
    Date of Patent: January 1, 2013
    Assignee: Corning Incorporated
    Inventors: Matthew John Dejneka, Alexander Mikhailovich Streltsov, Daniel R. Harvey, Sinue Gomez, Timothy Michael Gross
  • Patent number: 8327666
    Abstract: A method of cutting a glass sheet that has been thermally or chemically strengthened along a predetermined line, axis, or direction with high speed and with minimum damage on the cut edges. The strengthened glass sheet may be cut into at least two pieces, one of which having a predetermined shape or dimension. At least one damage line is formed within the strengthened glass sheet. The at least one damage line is formed outside the strengthened compressive stress surface layers and within the tensile stress layer of the strengthened glass sheet. The at least one damage line may be formed by laser treatment. A crack is initiated in the strengthened glass sheet and propagated along the at least one damage line to separate the strengthened glass sheet along the predetermined line, axis, or direction into at least two pieces.
    Type: Grant
    Filed: February 19, 2009
    Date of Patent: December 11, 2012
    Assignee: Corning Incorporated
    Inventors: Daniel R Harvey, Alexander Mikhailovich Streltsov
  • Patent number: 8312740
    Abstract: Disclosed are synthetic silica glass body with a birefringence pattern having low fast axis direction randomness factor and glass reflow process. The glass reflow process comprises steps of: providing a glass tube having a notch; and thermally reflowing the glass tube to form a glass plate. The process can be advantageously used to produce fused silica glass plate without observable striae when viewed in the direction of optical axis. Also disclosed are optical members comprising the fused silica glass body and a process for reflowing glass cylinders.
    Type: Grant
    Filed: November 21, 2008
    Date of Patent: November 20, 2012
    Assignee: Corning Incorporated
    Inventors: Steven Roy Burdette, Polly Wanda Chu, James Gerard Fagan, Thomas William Hobbs, Sumalee Likitvanichkul, Daniel Raymond Sempolinski, Terry Lee Taft, Michael John Walters
  • Patent number: 8312739
    Abstract: A method of chemically strengthening a glass. The method includes ion exchange of the glass in a first bath, followed by immersion in the second bath. The first bath is diluted with an effluent ion. The second bath has a smaller concentration of the effluent ion than the first bath. The method provides a compressive stress at the surface of the glass that is sufficient to arrest flaws introduced by contact forces at the surface of the glass while having sufficiently deep compressive depth-of-layer for high reliability.
    Type: Grant
    Filed: July 28, 2009
    Date of Patent: November 20, 2012
    Assignee: Corning Incorporated
    Inventors: Christopher Morton Lee, Lawrence George Mann, Jose Mario Quintal, Yongsheng Yan
  • Patent number: 8268740
    Abstract: A fused silica glass having a refractive index homogeneity of less or equal to about 5 ppm over an aperture area of at least about 50 cm2. The fused silica glass is also substantially free of halogens and has an adsorption edge of less than about 160 nm. The glass is dried by exposing a silica soot blank to carbon monoxide before consolidation, reducing the combined concentration of hydroxyl (i.e., OH, where H is protium (11H) and deuteroxyl (OD), where D is deuterium (12H)) of less than about 20 ppm by weight in one embodiment, less than about 5 ppm by weight in another embodiment, and less than about 1 ppm by weight in a third embodiment.
    Type: Grant
    Filed: February 2, 2009
    Date of Patent: September 18, 2012
    Assignee: Corning Incorporated
    Inventors: Richard Michael Fiacco, Kenneth Edward Hrdina, Rostislav Radievich Khrapko, Lisa Anne Moore, Charlene Marie Smith
  • Patent number: 8261578
    Abstract: A method of making a fused silica article that is loaded with hydrogen. A fused silica glass near net shape part is provided and is loaded with a molecular hydrogen in a range from about 0.1×1017 molecules/cm3 up to about 1×1019 molecules/cm3. The thinner shape of the near net shape part enables the shape to be loaded more quickly than previous methods. A fused silica article loaded with hydrogen using the method is also described.
    Type: Grant
    Filed: October 27, 2008
    Date of Patent: September 11, 2012
    Assignee: Corning Incorporated
    Inventors: Kenneth Edward Hrdina, Michael A Mueller, Susan Schiefelbein
  • Patent number: 8263511
    Abstract: A fused silica glass article having a low absolute refractive index and low concentrations of hydroxyl groups, halogens, and metal having a low absolute refractive index. The glass article contains less than about 10 ppm protium-containing and deuterium-containing hydroxyl groups by weight and less than about 20 ppm halogens by weight. The silica glass article also has an absolute refractive index (ARI) less than or equal to 1.560820. In one embodiment, the ARI of the fused silica article is achieved by lowering the fictive temperature of the fused silica. A method of lowering the fictive temperature is also described.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: September 11, 2012
    Assignee: Corning Incorporated
    Inventors: Carlos Duran, Richard Michael Fiacco, Kenneth Edward Hrdina, Daniel Raymond Sempolinski
  • Patent number: 8232218
    Abstract: A glass that is ion exchangeable to a depth of at least 20 ?m (microns) and has a internal region having a tension of less than or equal to 100 MPa. The glass is quenched or fast cooled from a first temperature above the anneal point of the glass to a second temperature that is below the strain point of the glass. In one embodiment, the glass is a silicate glass, such as an alkali silicate glass, an alkali aluminosilicate glass, an aluminosilicate glass, a borosilicate glass, an alkali aluminogermanate glass, an alkali germanate glass, an alkali gallogermanate glass, and combinations thereof.
    Type: Grant
    Filed: February 26, 2009
    Date of Patent: July 31, 2012
    Assignee: Corning Incorporated
    Inventors: Matthew John Dejneka, Adam James Ellison, Sinue Gomez
  • Patent number: 8232205
    Abstract: Methods of manufacturing a honeycomb extrusion die comprise the steps of coating at least a portion of a die body with a layer of conductive material and modifying the die body with an electrical discharge machining technique. The method then further includes the step of chemically removing the layer of conductive material, wherein the residual material from the electrical discharge machining technique is released from the die body.
    Type: Grant
    Filed: August 25, 2009
    Date of Patent: July 31, 2012
    Assignee: Corning Incorporated
    Inventor: Mark Lee Humphrey
  • Patent number: 8230701
    Abstract: A method for forming a silica glass blank includes generating soot using an array of soot producing burners, directing the soot along a first direction onto a bait, collecting the soot on the bait, imparting relative oscillatory motion having a repeat period between the array of soot producing burners and the bait along a second direction orthogonal to the first direction while collecting the soot, and offsetting the relative oscillatory motion by a selected distance along the second direction after each repeat period.
    Type: Grant
    Filed: May 28, 2008
    Date of Patent: July 31, 2012
    Assignee: Corning Incorporated
    Inventors: Raymond D Groh, Brian Lee Harper, John Edward Maxon
  • Patent number: 8217188
    Abstract: Described herein are C5-C6 annelated naphthopyrans that possess at least one electron-withdrawing group. The compounds possess desirable properties such as increased fading kinetics. Also described herein are new methods for synthesizing 2H-chromenes annelated at C5-C6. The methods involve less stringent reaction conditions as well as provide increased reaction yields. The methods permit the synthesis of a wide variety of substituted naphthopyrans that can be temperature sensitive, which was not possible with previous synthetic routes.
    Type: Grant
    Filed: August 4, 2009
    Date of Patent: July 10, 2012
    Assignee: Corning Incorporated
    Inventors: Suresh Das, Bruno Dufour, Mangalam S Nair, Kokkuvayil V Radhakrishnan
  • Patent number: 8188181
    Abstract: Compositions that include one or more compounds according to formula I: wherein Y is —S—, or —SO2—; R1 and R1? are independently chosen from H, —CH3, or a combination thereof; R2 is H, —CH3, or, ?and m and n are independently chosen from 0, 1, 2, 3, and 4; and one or more photochromic compounds.
    Type: Grant
    Filed: September 22, 2009
    Date of Patent: May 29, 2012
    Assignee: Corning Incorporated
    Inventor: David Henry
  • Patent number: 8183170
    Abstract: Disclosed are CuX-containing, Nd2O3-containing, UV-absorbing and contrast-enhancing glasses and article comprising the same. The glass has improved UV-absorption and color enhancing capabilities compared to glasses described in the prior art. The glass can be used in sunglass lenses and light filters of information displays.
    Type: Grant
    Filed: October 11, 2007
    Date of Patent: May 22, 2012
    Assignee: Corning Incorporated
    Inventor: Yves Andre Henri Brocheton
  • Patent number: 8176752
    Abstract: A silica glass article, such as a lens in a stepper/scanner system, having saturated induced absorption at wavelengths of less than about 250 nm. Saturated induced absorption is achieved by first removing Si—O defects in the silica glass by forming silicon hydride (SiH) at such defects, and loading the silica glass with hydrogen to react with E? centers formed by photolysis of SiH in the silica glass article. The silicon hydride is formed by loading the silica glass with molecular hydrogen at temperatures of at least 475° C. After formation of SiH, the silica glass is loaded with additional molecular hydrogen at temperatures of less than 475° C.
    Type: Grant
    Filed: July 23, 2009
    Date of Patent: May 15, 2012
    Assignee: Corning Incorporated
    Inventors: Susan Lee Schiefelbein, Charlene Marie Smith
  • Patent number: 8158543
    Abstract: A fining agent for reducing the concentration of seeds or bubbles in a silicate glass. The fining agent includes at least one inorganic compound, such as a hydrate or a hydroxide that acts as a source of water. In one embodiment, the fining agent further includes at least one multivalent metal oxide and, optionally, an oxidizer. A fusion formable and ion exchangeable silicate glass having a seed concentration of less than about 1 seed/cm3 is also provided. Methods of reducing the seed concentration of a silicate glass, and a method of making a silicate glass having a seed concentration of less than about 1 seed/cm3 are also described.
    Type: Grant
    Filed: February 25, 2009
    Date of Patent: April 17, 2012
    Assignee: Corning Incorporated
    Inventors: Matthew John Dejneka, Sinue Gomez
  • Patent number: 8136372
    Abstract: A method of making a fused silica article having a combined concentration of protium and deuterium in a range from about 1×1016 molecules/cm3 up to about 6×1019 molecules/cm3. In some embodiments, deuterium is present in an amount greater than its natural isotopic abundance. The method includes the steps of providing a fused silica boule, diffusing at least one of protium and deuterium into the boule, and annealing the boule to form the fused silica article. A method of diffusing hydrogen into fused silica and a fused silica article loaded with hydrogen formed by the method are also described.
    Type: Grant
    Filed: May 12, 2011
    Date of Patent: March 20, 2012
    Assignee: Corning Incorporated
    Inventors: Michael A Mueller, Michael Thomas Murtagh
  • Patent number: 8137469
    Abstract: Disclosed are process and apparatus for making high purity fused silica glass materials. The process involves depositing soot particles onto an essentially planar deposition supporting surface and modulation of motion of the soot-generating device relative to the deposition supporting surface to result in a low local soot density variation. The apparatus is designed to implement the planar deposition process. The invention makes it possible to produce fused silica glass without the use of potentially contaminating refractory bricks.
    Type: Grant
    Filed: December 14, 2005
    Date of Patent: March 20, 2012
    Assignee: Corning Incorporated
    Inventors: Daniel Warren Hawtof, Michael T Kelley, John Stephen Rosettie, Andrew Paul Schermerhorn, Kashyap H Shah, John Stone, III, Pushkar Tandon
  • Patent number: 8114798
    Abstract: A fining agent for reducing the concentration of seeds or bubbles in a silicate glass. The fining agent includes at least one inorganic compound, such as a hydrate or a hydroxide that acts as a source of water. In one embodiment, the fining agent further includes at least one multivalent metal oxide and, optionally, an oxidizer. A fusion formable and ion exchangeable silicate glass having a seed concentration of less than about 1 seed/cm3 is also provided. Methods of reducing the seed concentration of a silicate glass, and a method of making a silicate glass having a seed concentration of less than about 1 seed/cm3 are also described.
    Type: Grant
    Filed: February 25, 2009
    Date of Patent: February 14, 2012
    Assignee: Corning Incorporated
    Inventors: Matthew John Dejneka, Sinue Gomez
  • Patent number: 8110277
    Abstract: A method of making a fused silica plate includes providing a fused silica blank having a length, a longitudinal axis, and an outer diameter. The method further includes forming a slot in the fused silica blank which extends from the outer diameter to a location at or offset from a center of the fused silica blank and is substantially parallel to the longitudinal axis of the fused silica blank. The slot is defined by a concave surface located at or offset from the center of the fused silica blank, a first side surface extending between a first edge of the concave surface and the outer diameter of the fused silica blank, and a second side surface extending between a second edge of the concave surface and the outer diameter of the fused silica blank. At least one of the first and second side surfaces are connected to the concave surface by a chamfered surface. The method further includes rolling out the fused silica blank having the slot to form a fused silica plate.
    Type: Grant
    Filed: October 30, 2008
    Date of Patent: February 7, 2012
    Assignee: Corning Incorporated
    Inventors: Steven Roy Burdette, James Gerard Fagan, Daniel Raymond Sempolinski, Pattarin McLaren