Patents by Inventor Xiaoju Guo

Xiaoju Guo 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).

  • Laser cutting and removal of contoured shapes from transparent substrates
    Patent number: 11111170
    Abstract: A method for cutting, separating and removing interior contoured shapes in thin substrates, particularly glass substrates. The method involves the utilization of an ultra-short pulse laser to form defect lines in the substrate that may be followed by use of a second laser beam to promote isolation of the part defined by the interior contour.
    Type: Grant
    Filed: May 4, 2017
    Date of Patent: September 7, 2021
    Assignee: CORNING INCORPORATED
    Inventors: Bradley Frederick Bowden, Xiaoju Guo, Thomas Hackert, Garrett Andrew Piech, Kristopher Allen Wieland
  • HIGH STRAIN POINT AND HIGH YOUNG'S MODULUS GLASSES
    Publication number: 20210269354
    Abstract: Substantially alkali free glasses are disclosed with can be used to produce substrates for flat panel display devices, e.g., active-matrix liquid crystal displays (AMLCDs). The glasses have high annealing temperatures and Young's modulus. Methods for producing substantially alkali free glasses using a downdraw process (e.g., a fusion process) are also disclosed.
    Type: Application
    Filed: June 10, 2019
    Publication date: September 2, 2021
    Inventors: Venkatesh Botu, Xiaoju Guo, Ellen Anne King, Lisa Ann Lamberson, Adama Tandia, Kochuparambil Deenamma Vargheese, Jingshi Wu
  • LOW VISCOSITY GLASSES AND METHODS AND SYSTEMS FOR MANUFACTURE
    Publication number: 20210238080
    Abstract: A glass article including any one or several of SiO2, Al2O3, B2O3, Li2O, SnO2 and a fusion line. The glass article can also include a liquidus viscosity less than or equal to 100 kP. In some embodiments, the glass article includes, on an oxide basis, from 60 mol % to 74 mol % SiO2, from 7 mol % to 18 mol % Al2O3, from 3 mol % to 16 mol % B2O3, from 0 mol % to 6 mol % Na2O, from 0 mol % to 5 mol % P2O5, from 5 mol % to 11 mol % Li2O, less than or equal to 0.2 mol % SnO2.
    Type: Application
    Filed: February 25, 2021
    Publication date: August 5, 2021
    Inventors: Timothy Michael Gross, Xiaoju Guo, Shawn Rachelle Markham, Charlene Marie Smith, Jae Hyun Yu
  • Lithium containing glasses
    Patent number: 11066324
    Abstract: A glass article including, on an oxide basis, from 60 mol % to 74 mol % SiO2, from 7 mol % to 18 mol % Al2O3, from 3 mol % to 16 mol % B2O3, from 0 mol % to 6 mol % Na2O, from 0 mol % to 5 mol % P2O5, from 5 mol % to 11 mol % Li2O, less than or equal to 0.2 mol % SnO2, and from 0.5 mol % to 6.5 mol % divalent cation oxides. The glass article has a molar ratio of Al2O3:(R2O+RO) greater than or equal to 0.9, where R2O is a sum of alkali metal oxides in mol % and RO is a sum of divalent cation oxides in mol %.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: July 20, 2021
    Assignee: CORNING INCORPORATED
    Inventors: Timothy Michael Gross, Xiaoju Guo, Charlene Marie Smith
  • METHOD FOR MEASURING FRACTURE TOUGHNESS OF GLASS
    Publication number: 20210181802
    Abstract: Glass-based articles are provided that exhibit improved drop performance. The relationship between properties attributable to the glass composition and stress profile of the glass-based articles are provided that indicate improved drop performance.
    Type: Application
    Filed: February 19, 2021
    Publication date: June 17, 2021
    Inventors: Emily Marie Aaldenberg, Jared Seaman Aaldenberg, Xiaoju Guo, Peter Joseph Lezzi, Jian Luo, Rostislav Vatchev Roussev
  • Method for achieving a stress profile in a glass
    Patent number: 11034614
    Abstract: A method for generating various stress profiles for chemically strengthened glass. An alkali aluminosilicate glass is brought into contact with an ion exchange media such as, for example, a molten salt bath containing an alkali metal cation that is larger than an alkali metal cation in the glass. The ion exchange is carried out at temperatures greater than about 420° C. and at least about 30° C. below the anneal point of the glass.
    Type: Grant
    Filed: September 27, 2019
    Date of Patent: June 15, 2021
    Assignee: CORNING INCORPORATED
    Inventors: Douglas Clippinger Allan, Xiaoju Guo, Guangli Hu, Gaozhu Peng
  • MAGNESIUM ALUMINOSILICATE GLASSES WITH HIGH FRACTURE TOUGHNESS
    Publication number: 20210155527
    Abstract: A glass composition includes: Si2O, greater than 0 mol % to less than or equal to 24 mol % Al2O3, B2O3, K2O, greater than or equal to 10 mol % to less than or equal to 38 mol % MgO, Na2O, and Li2O. The glass composition may have a fracture toughness of greater than or equal 0.80 MPa?m and a Young's modulus of greater than or equal to 80 GPa to less than or equal to 120 GPa. The glass composition is chemically strengthenable. The glass composition may be used in a glass article or a consumer electronic product.
    Type: Application
    Filed: November 12, 2020
    Publication date: May 27, 2021
    Inventors: Xiaoju Guo, Peter Joseph Lezzi, Jian Luo
  • ION EXCHANGEABLE ALKALI ALUMINOSILICATE GLASS COMPOSITIONS HAVING IMPROVED MECHANICAL DURABILITY
    Publication number: 20210155530
    Abstract: A glass composition comprises: 50.0 mol % to 70.0 mol % SiO2; 10.0 mol % to 25.0 mol % Al2O3; 0.0 mol % to 5.0 mol % P2O3; 0.0 mol % to 10.0 mol % B2O3; 5.0 mol % to 15.0 mol % Li2O; 1.0 mol % to 15.0 mol % Na2O; and 0.0 mol % to 1.0 mol % K2O. The sum of all alkali oxides, R2O, present in the glass composition may be in the range from greater than or equal to 11.0 mol % to less than or equal to 23.0 mol %. The sum of Al2O3 and R2O present in the glass composition may be in the range from greater than or equal to 26.0 mol % to less than or equal to 40.0 mol %. The glass composition may satisfy the relationship ?0.1?(Al2O3—(R2O+RO))/Li2O?0.3.
    Type: Application
    Filed: November 20, 2020
    Publication date: May 27, 2021
    Inventors: Shuo Cui, Xiaoju Guo, Peter Joseph Lezzi, Jian Luo
  • ION-EXCHANGEABLE MIXED ALKALI ALUMINOSILICATE GLASSES
    Publication number: 20210155532
    Abstract: A glass composition includes from 55.0 mol % to 75.0 mol % SiO2; from 8.0 mol % to 20.0 mol % Al2O3; from 3.0 mol % to 15.0 mol % Li2O; from 5.0 mol % to 15.0 mol % Na2O; and less than or equal to 1.5 mol % K2O. The glass composition has the following relationships: Al2O3+Li2O is greater than 22.5 mol %, R2O+RO is greater than or equal to 18.0 mol %, R2O/Al2O3 is greater than or equal to 1.06, SiO2+Al2O3+B2O3+P2O5 is greater than or equal to 78.0 mol %, and (SiO2+Al2O3+B2O3+P2O5)/Li2O is greater than or equal to 8.0. The glass composition may be used in a glass article or a consumer electronic product.
    Type: Application
    Filed: February 1, 2021
    Publication date: May 27, 2021
    Inventors: Timothy Michael Gross, Xiaoju Guo, Peter Joseph Lezzi, Alexandra Lai Ching Kao Andrews Mitchell, Rostislav Vatchev Roussev
  • ALUMINOSILICATE GLASSES WITH HIGH FRACTURE TOUGHNESS
    Publication number: 20210155528
    Abstract: A glass composition includes: Si2O, greater than 15 mol % to less than or equal to 32 mol % Al2O3, B2O3, K2O, MgO, Na2O, and Li2O. The glass composition may have a fracture toughness of greater than or equal 0.75 MPa?m and a Young's modulus of greater than or equal to 80 GPa to less than or equal to 120 GPa. The glass composition is chemically strengthenable. The glass composition may be used in a glass article or a consumer electronic product.
    Type: Application
    Filed: November 20, 2020
    Publication date: May 27, 2021
    Inventors: Xiaoju Guo, Peter Joseph Lezzi, Jian Luo
  • BORON-CONTAINING GLASS COMPOSITIONS HAVING HIGH FRACTURE TOUGHNESS
    Publication number: 20210147280
    Abstract: Glass compositions including 50 mol % to 65 mol % SiO2, 13 mol % to 20 mol % Al2O3, 6 mol % or more B2O3, 0 mol % to 5 mol % MgO, 0 mol % to 2 mol % CaO, 8 mol % to 14 mol % Li2O, 0 mol % to 4 mol % Na2O, and 0 mol % to 1 mol % K2O, where Al2O3 mol %>R2O+R?O—3 mol %. The glass compositions may have a K1C value of 0.75 MPa*m1/2 or more measured by a chevron short bar method. The glass compositions may be used in a glass article or consumer electronic product.
    Type: Application
    Filed: November 12, 2020
    Publication date: May 20, 2021
    Inventors: Xiaoju Guo, Peter Joseph Lezzi, Jian Luo
  • Low viscosity glasses and methods and systems for manufacture
    Patent number: 10968134
    Abstract: A glass article including any one or several of SiO2, Al2O3, B2O3, Li2O, SnO2 and a fusion line. The glass article can also include a liquidus viscosity less than or equal to 100 kP. In some embodiments, the glass article includes, on an oxide basis, from 60 mol % to 74 mol % SiO2, from 7 mol % to 18 mol % Al2O3, from 3 mol % to 16 mol % B2O3, from 0 mol % to 6 mol % Na2O, from 0 mol % to 5 mol % P2O5, from 5 mol % to 11 mol % Li2O, less than or equal to 0.2 mol % SnO2.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: April 6, 2021
    Assignee: Corning Incorporated
    Inventors: Timothy Michael Gross, Xiaoju Guo, Shawn Rachelle Markham, Charlene Marie Smith, Jae Hyun Yu
  • LITHIUM CONTAINING GLASSES
    Publication number: 20210070649
    Abstract: A glass article including, on an oxide basis, from 60 mol % to 74 mol % SiO2, from 7 mol % to 18 mol % Al2O3, from 3 mol % to 16 mol % B2O3, from 0 mol % to 6 mol % Na2O, from 0 mol % to 5 mol % P2O5, from 5 mol % to 11 mol % Li2O, less than or equal to 0.2 mol % SnO2, and from 0.5 mol % to 6.5 mol % divalent cation oxides. The glass article has a molar ratio of Al2O3:(R2O+RO) greater than or equal to 0.9, where R2O is a sum of alkali metal oxides in mol % and RO is a sum of divalent cation oxides in mol %.
    Type: Application
    Filed: October 31, 2017
    Publication date: March 11, 2021
    Inventors: Timothy Michael Gross, Xiaoju Guo, Charlene Marie Smith
  • Damage resistant glass with high coefficient of thermal expansion
    Patent number: 10919797
    Abstract: Ion exchangeable glasses having coefficients of thermal expansion (CTE) at least about 90×10?7° C.?1. The glasses undergo rapid ion exchange, for example, in a molten KNO3 salt bath to a depth of layer of greater than 30 microns in less than 2 hours at temperatures of 370° C. to 390° C. When ion-exchanged to a depth of layer between 30 to 50 microns, the glasses exhibit a Vickers median/radial crack initiation threshold exceeding 30 kilograms force (kgf). The glasses are fusion formable and, in some embodiments, compatible with zircon.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: February 16, 2021
    Assignee: CORNING INCORPORATED
    Inventors: Timothy Michael Gross, Xiaoju Guo
  • METHODS AND APPARATUS FOR PREDICTING GLASS DYNAMICS
    Publication number: 20210034799
    Abstract: Computer-implemented methods and apparatus are provided for predicting/estimating (i) a non-equilibrium viscosity for at least one given time point in a given temperature profile for a given glass composition, (ii) at least one temperature profile that will provide a given non-equilibrium viscosity for a given glass composition, or (iii) at least one glass composition that will provide a given non-equilibrium viscosity for a given time point in a given temperature profile. The methods and apparatus can be used to predict/estimate stress relaxation in a glass article during forming as well as compaction, stress relaxation, and/or thermal sag or thermal creep of a glass article when the article is subjected to one or more post-forming thermal treatments.
    Type: Application
    Filed: October 9, 2020
    Publication date: February 4, 2021
    Inventors: Douglas Clippinger Allan, Adam James Ellison, Xiaoju Guo, Timothy James Kiczenski, John Christopher Mauro, Marcel Potuzak
  • Ion-exchangeable mixed alkali aluminosilicate glasses
    Patent number: 10906834
    Abstract: A glass composition includes from 55.0 mol % to 75.0 mol % SiO2; from 8.0 mol % to 20.0 mol % Al2O3; from 3.0 mol % to 15.0 mol % Li2O; from 5.0 mol % to 15.0 mol % Na2O; and less than or equal to 1.5 mol % K2O. The glass composition has the following relationships: Al2O3+Li2O is greater than 22.5 mol %, R2O+RO is greater than or equal to 18.0 mol %, R2O/Al2O3 is greater than or equal to 1.06, SiO2+Al2O3+B2O3+P2O5 is greater than or equal to 78.0 mol %, and (SiO2+Al2O3+B2O3+P2O5)/Li2O is greater than or equal to 8.0. The glass composition may be used in a glass article or a consumer electronic product.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: February 2, 2021
    Assignee: CORNING INCORPORATED
    Inventors: Timothy Michael Gross, Xiaoju Guo, Peter Joseph Lezzi, Alexandra Lai Ching Kao Andrews Mitchell, Rostislav Vatchev Roussev
  • Methods for regenerating lithium-enriched salt baths
    Patent number: 10843963
    Abstract: Methods for regenerating poisoned salt bath comprising providing a salt bath comprising at least one of KNO3 and NaNO3, providing an ion-exchangeable substrate comprising lithium cations, contacting at least a portion of the ion-exchangeable substrate with the salt bath, whereby lithium cations in the salt bath diffuse from the ion-exchangeable substrate and are dissolved in the salt bath, and selectively precipitating dissolved lithium cations from the salt bath using phosphate salt. The methods further include preventing or reducing the formation of surface defects in the ion-exchangeable substrate by preventing or reducing the formation of crystals on the surface of the ion-exchangeable substrate upon removal from the salt bath.
    Type: Grant
    Filed: February 10, 2020
    Date of Patent: November 24, 2020
    Assignee: Corning Incorporated
    Inventors: Jaymin Amin, Xiaoju Guo, Todd LeRoy Heck, Hongmei Hu, Yuhui Jin, Pascale Oram, Ljerka Ukrainczyk
  • Methods and apparatus for predicting glass dynamics
    Patent number: 10846446
    Abstract: Computer-implemented methods and apparatus are provided for predicting/estimating (i) a non-equilibrium viscosity for at least one given time point in a given temperature profile for a given glass composition, (ii) at least one temperature profile that will provide a given non-equilibrium viscosity for a given glass composition, or (iii) at least one glass composition that will provide a given non-equilibrium viscosity for a given time point in a given temperature profile. The methods and apparatus can be used to predict/estimate stress relaxation in a glass article during forming as well as compaction, stress relaxation, and/or thermal sag or thermal creep of a glass article when the article is subjected to one or more post-forming thermal treatments.
    Type: Grant
    Filed: January 11, 2019
    Date of Patent: November 24, 2020
    Assignee: Corning Incorporated
    Inventors: Douglas Clippinger Allan, Adam James Ellison, Xiaoju Guo, Timothy James Kiczenski, John Christopher Mauro, Marcel Potuzak
  • ION EXCHANGEABLE GLASS CONTAINING BORON AND PHOSPHOROUS
    Publication number: 20200361810
    Abstract: Ion exchangeable glasses containing SiO2, Al2O3, Na2O, MgO, B2O3, and P2O5 are provided. The compressive stresses of these ion exchanged glasses are greater than 900 megapascals (MPa) at a depth of 45 or 50 microns (?m) with some glasses exhibiting a compressive stress of at least 1 gigaPascals (GPa). The ion exchange rates of these glasses are much faster than those of other alkali aluminosilicate glasses and the ion exchanged glass is resistant damage to impact damage. A method of ion exchanging the glass is also provided.
    Type: Application
    Filed: August 3, 2020
    Publication date: November 19, 2020
    Inventors: Matthew John Dejneka, Sinue Gomez, Timothy Michael Gross, Xiaoju Guo
  • HIGH SILICATE GLASS ARTICLES POSSESSING THROUGH GLASS VIAS AND METHODS OF MAKING AND USING THEREOF
    Publication number: 20200354262
    Abstract: Disclosed herein are glass compositions with high silica content that present several advantages over glasses and other materials currently used for redistribution layers for RF, interposers, and similar applications. The glasses disclosed herein are low cost, flat glasses that have high throughput for the laser damage and etching process used to create through glass vias (TGVs). TGVs generated using the silicate glasses and processes described herein have large waist diameters, which is a desirable feature with respect to producing glass articles such as interposers.
    Type: Application
    Filed: April 30, 2020
    Publication date: November 12, 2020
    Inventors: Xiaoju Guo, Tian Huang, Yuhui Jin, Tammy Lynn Petriwsky, Liying Zhang