Patents by Inventor Ljerka Ukrainczyk

Ljerka Ukrainczyk 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).

  • Publication number: 20200181011
    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: Application
    Filed: February 10, 2020
    Publication date: June 11, 2020
    Inventors: Jaymin Amin, Xiaoju Guo, Todd LeRoy Heck, Hongmei Hu, Yuhui Jin, Pascale Oram, Ljerka Ukrainczyk
  • Publication number: 20200180992
    Abstract: A three dimensional glass ceramic article with a thickness between 0.1 mm and 2 mm, having a dimensional precision control of less than or equal to ±0.1 mm. A method for forming a three dimensional glass ceramic article including placing a nucleated glass article into a mold, and heating the nucleated glass article to a crystallization temperature, where the nucleated glass article is in the mold during the heating. Then, holding the nucleated glass article at the crystallization temperature for a duration sufficient to crystallize the nucleated glass article and form a three dimensional glass ceramic article, where the nucleated glass article is in the mold during the holding, and removing the three dimensional glass ceramic article from the mold.
    Type: Application
    Filed: November 5, 2019
    Publication date: June 11, 2020
    Inventors: Rohit Rai, John Robert Saltzer, JR., Ljerka Ukrainczyk, Sibrina Jean Washington
  • Publication number: 20200163244
    Abstract: A cover glass article includes a glass body having a three-dimensional shape, an inside surface, and an outside surface. Each of the inside and outside surfaces has a surface roughness (Ra) less than 1 nm and is free of indentations having diameters larger than 150 ?m.
    Type: Application
    Filed: January 27, 2020
    Publication date: May 21, 2020
    Inventors: Karl David Ehemann, Keith Raymond Gaylo, William Brashear Mattingly, III, Connor Thomas O'Malley, Ljerka Ukrainczyk, Kevin Lee Wasson
  • Publication number: 20200148591
    Abstract: Ion-exchanged glass ceramic articles described herein have a stress that decreases with increasing distance according to a substantially linear function from a depth of about 0.07 t to a depth of about 0.26 t from the outer surface of the ion-exchanged glass ceramic article from a compressive stress to a tensile stress. The stress transitions from the compressive stress to the tensile stress at a depth of from about 0.18 t to about 0.25 t from the outer surface of the ion-exchanged glass ceramic article. An absolute value of a maximum compressive stress at the outer surface of the ion-exchanged glass article is from 1.8 to 2.2 times an absolute value of a maximum central tension (CT) of the ion-exchanged glass article, and the glass ceramic article has a fracture toughness of 1 MPa?m or more as measured according to the double cantilever beam method.
    Type: Application
    Filed: November 13, 2019
    Publication date: May 14, 2020
    Inventors: Ryan Claude Andrews, Albert Joseph Fahey, Lisa Marie Noni, Rostislav Vatchev Roussev, Charlene Marie Smith, Ljerka Ukrainczyk, Shelby Kerin Wilson
  • Patent number: 10640304
    Abstract: An apparatus for locating a preform on a mold includes a preform handling tool and a force sensor coupled to the preform handling tool such that the force sensor is capable of sensing forces applied to the preform during handling of the preform by the preform handling tool. The apparatus includes a control device that is arranged and operable to move the preform handling tool relative to the mold. A method of locating the preform on the mold includes picking up the preform using the preform handling tool and placing the preform in a vicinity of the mold. Positions on the mold are mapped with an edge of the preform with the aid of the force sensor. The preform is paced on the mold according to the mapped positions.
    Type: Grant
    Filed: December 11, 2015
    Date of Patent: May 5, 2020
    Assignee: CORNING INCORPORATED
    Inventors: Kevin Thomas Morris, Andrew Nathan Nassau, Michael George Shultz, Matthew John Towner, Kevin William Uhlig, Ljerka Ukrainczyk, Thomas Achille Yorio
  • Patent number: 10611661
    Abstract: According to one embodiment, a method of manufacturing a glass article having a three-dimensional shape includes heating a glass article blank to a temperature above a setting temperature and coupling the glass article blank to an open-faced mold. The open-faced mold includes a molding region that has a three-dimensional shape that generally corresponds to the shape of the glass article and has an anisothermal temperature profile within the molding region. The method further includes maintaining an anisothermal temperature profile along the glass article blank and cooling the glass article blank while the glass article blank is coupled to the molding region of the open-faced mold to set the shape of the glass article.
    Type: Grant
    Filed: February 27, 2018
    Date of Patent: April 7, 2020
    Assignee: CORNING INCORPORATED
    Inventors: Weiwei Luo, Rohit Rai, Ljerka Ukrainczyk, Zheming Zheng, Sam Samer Zoubi
  • Publication number: 20200062631
    Abstract: A method includes contacting a glass sheet with a forming surface to form a shaped glass article. An effective viscosity of the glass sheet during the contacting step is less than a contact viscosity of the glass sheet in contact with the forming surface during the contacting step.
    Type: Application
    Filed: July 31, 2019
    Publication date: February 27, 2020
    Inventors: Thierry Luc Alain Dannoux, Vladislav Yuryevich Golyatin, John Richard Ridge, Ljerka Ukrainczyk, Butchi Reddy Vaddi, Natesan Venkataraman
  • Patent number: 10575422
    Abstract: A cover glass article includes a glass body having a three-dimensional shape, an inside surface, and an outside surface. Each of the inside and outside surfaces has a surface roughness (Ra) less than 1 nm and is free of indentations having diameters larger than 150 ?m.
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: February 25, 2020
    Assignee: CORNING INCORPORATED
    Inventors: Karl David Ehemann, Keith Raymond Gaylo, William Brashear Mattingly, III, Connor Thomas O'Malley, Ljerka Ukrainczyk, Kevin Lee Wasson
  • Patent number: 10556826
    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: November 18, 2016
    Date of Patent: February 11, 2020
    Assignee: Corning Incorporated
    Inventors: Jaymin Amin, Xiaoju Guo, Todd LeRoy Heck, Hongmei Hu, Yuhui Jin, Pascale Oram, Ljerka Ukrainczyk
  • Publication number: 20200017398
    Abstract: A glass ceramic article including a lithium disilicate crystalline phase, a petalite crystalline phased, and a residual glass phase. The glass ceramic article has a warp (?m)<(3.65×10?6/?m×diagonal2) where diagonal is a diagonal measurement of the glass ceramic article in ?m, a stress of less than 30 nm of retardation per mm of glass ceramic article thickness, a haze (%)<0.0994t+0.12 where t is the thickness of the glass ceramic article in mm, and an optical transmission (%)>0.91×10(2-0.03t) of electromagnetic radiation wavelengths from 450 nm to 800 nm, where t is the thickness of the glass ceramic article in mm.
    Type: Application
    Filed: July 12, 2019
    Publication date: January 16, 2020
    Applicant: CORNING INCORPORATED
    Inventors: Carol Ann Click, James Howard Edmonston, Qiang Fu, Jill Marie Hall, Mathieu Gerard Jacques Hubert, Dhananjay Joshi, Andrew Peter Kittleson, Katherine Weber Kroemer, Galan Gregory Moore, Rohit Rai, John Richard Ridge, John Robert Saltzer, JR., Charlene Marie Smith, Erika Lynn Stapleton, Matthew Daniel Trosa, Ljerka Ukrainczyk, Shelby Kerin Wilson, Bin Yang, Zheming Zheng
  • Publication number: 20200016869
    Abstract: A method of forming a 3D glass article from a glass sheet includes locating the glass sheet on a mold assembly including a mold surface with a 3D surface profile corresponding to that of the 3D glass article. The glass sheet is heated to a forming temperature. The forming temperature is greater than a temperature of the mold surface. The heated glass sheet is forced onto the mold surface by applying a pressurized gas to a first surface of the glass sheet opposite the mold surface to conform the glass sheet to the mold surface with the glass sheet at the forming temperature that is greater than the temperature of the mold surface.
    Type: Application
    Filed: September 24, 2019
    Publication date: January 16, 2020
    Inventors: Marianne Griesback Park, John Richard Ridge, Ljerka Ukrainczyk
  • Publication number: 20190389764
    Abstract: A method of reworking lithium containing ion exchanged glass articles is provided. The method includes a reverse ion exchange process that returns the glass article to approximately the composition of the glass from which the glass article was produced, before being subjected to ion exchange. The reworked glass articles exhibit a K2O concentration profile comprising a portion wherein a K2O concentration increases to a local K2O concentration maximum.
    Type: Application
    Filed: February 2, 2017
    Publication date: December 26, 2019
    Inventors: Ryan Claude Andrews, Jill Marie Hall, Pascale Oram, Rostislav Vatchev Roussev, Vitor Marino Schneider, Ljerka Ukrainczyk
  • Publication number: 20190375679
    Abstract: Glass-based articles comprise stress profiles providing improved fracture resistance. The glass-based articles herein provide high fracture resistance after multiple drops.
    Type: Application
    Filed: June 7, 2019
    Publication date: December 12, 2019
    Inventors: Timothy Michael Gross, Xiaoju Guo, Jason Thomas Harris, Peter Joseph Lezzi, Alexandra Lai Ching Kao Andr Mitchell, Pascale Oram, Kevin Barry Reiman, Rostislav Vatchev Roussev, Ljerka Ukrainczyk
  • Patent number: 10479052
    Abstract: A method of forming a 3D glass article from a glass sheet includes locating the glass sheet on a mold assembly including a mold surface with a 3D surface profile corresponding to that of the 3D glass article. The glass sheet is heated to a forming temperature. The forming temperature is greater than a temperature of the mold surface. The heated glass sheet is forced onto the mold surface by applying a pressurized gas to a first surface of the glass sheet opposite the mold surface to conform the glass sheet to the mold surface with the glass sheet at the forming temperature that is greater than the temperature of the mold surface.
    Type: Grant
    Filed: August 17, 2015
    Date of Patent: November 19, 2019
    Assignee: CORNING INCORPORATED
    Inventors: Ljerka Ukrainczyk, John Richard Ridge, Marianne Griesbach Park
  • Publication number: 20190330096
    Abstract: A method for treating a mold includes grinding an outer metal surface of a mold body of the mold with a first material; lapping the outer metal surface after the grinding with a second material that is finer than the first material; and polishing the outer metal surface after the lapping to achieve an average surface roughness (Ra) less than or equal to about 0.15 ?m and a waviness height (Wa) less than or equal to about 100 nm. A mold for shaping glass-based material can include a mold body having an outer metal surface, wherein the outer metal surface has an average surface roughness (Ra) less than or equal to about 0.15 ?m and a waviness height (Wa) less than or equal to about 100 nm.
    Type: Application
    Filed: July 9, 2019
    Publication date: October 31, 2019
    Inventors: Yi-Chun Chiang, Jill Marie Hall, Fang-Yu Hsu, Shen Li, Ljerka Ukrainczyk, Hong Chih Wang
  • Patent number: 10442160
    Abstract: A method of forming a 3D glass article from a glass sheet includes locating the glass sheet on a mold assembly including a mold surface with a 3D surface profile corresponding to that of the 3D glass article. The glass sheet is heated to a forming temperature. The forming temperature is greater than a temperature of the mold surface. The heated glass sheet is forced onto the mold surface by applying a pressurized gas to a first surface of the glass sheet opposite the mold surface to conform the glass sheet to the mold surface with the glass sheet at the forming temperature that is greater than the temperature of the mold surface.
    Type: Grant
    Filed: August 17, 2015
    Date of Patent: October 15, 2019
    Assignee: CORNING INCORPORATED
    Inventors: Ljerka Ukrainczyk, John Richard Ridge, Marianne Griesbach Park
  • Patent number: 10435325
    Abstract: A mold with a multi-layer coating is disclosed. The mold may include a mold body having an outer surface and a multi-layer coating disposed on the outer surface. The multi-layer coating may include a diffusion barrier layer disposed on the outer surface of the mold body and an intermetallic layer disposed on the diffusion barrier layer, wherein the intermetallic layer comprises Ti, Al, and an additional metal selected from the group consisting of Zr, Ta, Nb, Y, Mo, Hf, and combinations thereof. The diffusion barrier layer may restrict diffusion of metal from the mold body to the intermetallic layer.
    Type: Grant
    Filed: January 19, 2017
    Date of Patent: October 8, 2019
    Assignee: CORNING INCORPORATED
    Inventors: Jill Marie Hall, Ljerka Ukrainczyk
  • Patent number: 10377656
    Abstract: A method includes contacting a second layer of a glass sheet with a forming surface to form a shaped glass article. The glass sheet includes a first layer adjacent to the second layer. The first layer includes a first glass composition. The second layer includes a second glass composition. An effective viscosity of the glass sheet during the contacting step is less than a viscosity of the second layer of the glass sheet during the contacting step. A shaped glass article includes a first layer including a first glass composition and a second layer including a second glass composition. A softening point of the first glass composition is less than a softening point of the second glass composition. An effective 108.2 P temperature of the glass article is at most about 900° C.
    Type: Grant
    Filed: May 7, 2015
    Date of Patent: August 13, 2019
    Assignee: Corning Incorporated
    Inventors: Thierry Luc Alain Dannoux, Vladislav Yuryevich Golyatin, John Richard Ridge, Ljerka Ukrainczyk, Butchi Reddy Vaddi, Natesan Venkataraman
  • Patent number: 10351459
    Abstract: A method for treating a mold includes grinding an outer metal surface of a mold body of the mold with a first material; lapping the outer metal surface after the grinding with a second material that is finer than the first material; and polishing the outer metal surface after the lapping to achieve an average surface roughness (Ra) less than or equal to about 0.15 ?m and a waviness height (Wa) less than or equal to about 100 nm. A mold for shaping glass-based material can include a mold body having an outer metal surface, wherein the outer metal surface has an average surface roughness (Ra) less than or equal to about 0.15 ?m and a waviness height (Wa) less than or equal to about 100 nm.
    Type: Grant
    Filed: August 11, 2016
    Date of Patent: July 16, 2019
    Assignee: CORNING INCORPORATED
    Inventors: Yi-Chun Chiang, Jill Marie Hall, Shen Li, Ljerka Ukrainczyk, Hong Chih Wang, Fang-Yu Hsu
  • Publication number: 20190106353
    Abstract: Glass-based articles having sections of different thicknesses where a maximum central tension in a thinner section is less than that of a thicker section. The articles comprise an alkali metal oxide having a independent nonzero concentrations that vary along at least a portion of the thickness of each section. Consumer electronic products may comprise the glass-based articles having sections of different thicknesses.
    Type: Application
    Filed: October 3, 2018
    Publication date: April 11, 2019
    Inventors: Rohit Rai, Ljerka Ukrainczyk