Patents by Inventor Jeffrey Todd Kohli

Jeffrey Todd Kohli 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: 11926564
    Abstract: Glasses that can be chemically strengthened and are colored by transition metals. Most of the glasses are black, with some having high damage resistance and compressive surface layers having high compressive stress and depth of layer after ion exchange. These colored glasses do not require a post-forming heat treatment to produce color and are formable by fusions drawing, rolling, slot drawing, and float glass processes.
    Type: Grant
    Filed: January 28, 2014
    Date of Patent: March 12, 2024
    Assignee: CORNING INCORPORATED
    Inventors: Xiaoju Guo, Jeffrey Todd Kohli, John Christopher Mauro, Ronald Leroy Stewart
  • Publication number: 20230211585
    Abstract: Embodiments of this disclosure pertain to a strengthened glass article including a first surface and a second surface opposing the first surface defining a thickness (t) of about less than about 1.1 mm, a compressive stress layer extending from the first surface to a depth of compression (DOC) of about 0.1·t or greater, such that when the glass article fracture, it breaks into a plurality of fragments having an aspect ratio of about 5 or less. In some embodiments, the glass article exhibits an equibiaxial flexural strength of about 20 kgf or greater, after being abraded with 90-grit SiC particles at a pressure of 25 psi for 5 seconds. Devices incorporating the glass articles described herein and methods for making the same are also disclosed.
    Type: Application
    Filed: March 13, 2023
    Publication date: July 6, 2023
    Inventors: Steven Edward DeMartino, Michelle Dawn Fabian, Jeffrey Todd Kohli, Jennifer Lynn Lyon, Charlene Marie Smith, Zhongzhi Tang
  • Patent number: 11613103
    Abstract: Embodiments of this disclosure pertain to a strengthened glass article including a first surface and a second surface opposing the first surface defining a thickness (t) of about less than about 1.1 mm, a compressive stress layer extending from the first surface to a depth of compression (DOC) of about 0.1·t or greater, such that when the glass article fracture, it breaks into a plurality of fragments having an aspect ratio of about 5 or less. In some embodiments, the glass article exhibits an equibiaxial flexural strength of about 20 kgf or greater, after being abraded with 90-grit SiC particles at a pressure of 25 psi for 5 seconds. Devices incorporating the glass articles described herein and methods for making the same are also disclosed.
    Type: Grant
    Filed: February 28, 2020
    Date of Patent: March 28, 2023
    Assignee: Corning Incorporated
    Inventors: Steven Edward DeMartino, Michelle Dawn Fabian, Jeffrey Todd Kohli, Jennifer Lynn Lyon, Charlene Marie Smith, Zhongzhi Tang
  • Publication number: 20230051724
    Abstract: Strengthened glass articles formed from a glass composition comprising less than 1.0 mol % R2O, where R is an alkali ion, are disclosed. In various embodiments, the glass articles have a dielectric constant of less than 6.25 and a dielectric loss tangent of less than 0.01 at 30 GHz. Electronic devices, such as consumer electronic products, including the strengthened glass articles, as well as methods of making the strengthened glass articles are also disclosed.
    Type: Application
    Filed: December 30, 2020
    Publication date: February 16, 2023
    Inventors: Timothy Michael Gross, Jeffrey Todd Kohli, Peter Joseph Lezzi, Vitor Marino Schneider, Jingshi Wu, Zheming Zheng
  • Publication number: 20220135472
    Abstract: Methods for compensating for warp typically exhibited by glass-based articles having non-uniform thicknesses as a result of ion exchange strengthening are provided. The methods include producing a molding surface of a mold based on a measurement of warp obtained by a specified ion exchange strengthening of a glass-based substrate of non-uniform thickness, such that the molding surface offsets the warp. Glass-based substrates resulting from the mold can then be exposed to the specified ion exchange strengthening and form glass-based articles that are substantially free of warp.
    Type: Application
    Filed: February 20, 2020
    Publication date: May 5, 2022
    Inventors: Jason Thomas Harris, Jeffrey Todd Kohli
  • Patent number: 11267228
    Abstract: A glass-based article having an amorphous phase and a crystalline phase, and a first surface and a second surface opposing the first surface thereby defining a thickness (t) of the glass-based article. The glass-based article having a stress profile with a surface compressive stress (CS) and a maximum central tension (CT). The maximum CT is greater than or equal to 50 MPa and less than or equal to 200 MPa and is positioned within the glass-based article at a range from greater than or equal to 0.4·t and less than or equal to 0.6·t. The surface CS is greater than or equal to 200 MPa and less than or equal to 500 MPa, and a depth of compression (DOC) is from greater than or equal to 0.14·t and less than or equal to 0.25·t.
    Type: Grant
    Filed: September 18, 2020
    Date of Patent: March 8, 2022
    Assignee: Corning Incorporated
    Inventors: Steven Edward DeMartino, Michelle Dawn Fabian, Jeffrey Todd Kohli, Jennifer Lynn Lyon, Charlene Marie Smith, Zhongzhi Tang
  • Publication number: 20210179472
    Abstract: Embodiments of a method for pair bending glass articles is provided herein. In the method, a first glass article and a second glass article are stacked to form a stack. The first glass article includes a first surface, a second surface that opposes the first surface, and a first composition having first annealing and softening temperatures. The second glass article includes a third surface, a fourth surface that opposes the third surface, and a second composition having second annealing and softening temperatures. The annealing temperatures are within 35° C. of each other and are at least 550° C. The softening temperatures are within 35° C. of each other and are at least 750° C. In the method, the stack is placed on a mold, and the stack is heated to a sagging temperature such that a shaped stack is formed.
    Type: Application
    Filed: August 21, 2019
    Publication date: June 17, 2021
    Inventors: Timothy Michael Gross, Jeffrey Todd Kohli
  • Publication number: 20210004059
    Abstract: A glass-based article having an amorphous phase and a crystalline phase, and a first surface and a second surface opposing the first surface thereby defining a thickness (t) of the glass-based article. The glass-based article having a stress profile with a surface compressive stress (CS) and a maximum central tension (CT). The maximum CT is greater than or equal to 50 MPa and less than or equal to 200 MPa and is positioned within the glass-based article at a range from greater than or equal to 0.4·t and less than or equal to 0.6·t. The surface CS is greater than or equal to 200 MPa and less than or equal to 500 MPa, and a depth of compression (DOC) is from greater than or equal to 0.14·t and less than or equal to 0.25·t.
    Type: Application
    Filed: September 18, 2020
    Publication date: January 7, 2021
    Applicant: CORNING INCORPORATED
    Inventors: Steven Edward DeMartino, Michelle Dawn Fabian, Jeffrey Todd Kohli, Jennifer Lynn Lyon, Charlene Marie Smith, Zhongzhi Tang
  • Publication number: 20200201397
    Abstract: Embodiments of this disclosure pertain to a strengthened glass article including a first surface and a second surface opposing the first surface defining a thickness (t) of about less than about 1.1 mm, a compressive stress layer extending from the first surface to a depth of compression (DOC) of about 0.1·t or greater, such that when the glass article fracture, it breaks into a plurality of fragments having an aspect ratio of about 5 or less. In some embodiments, the glass article exhibits an equibiaxial flexural strength of about 20 kgf or greater, after being abraded with 90-grit SiC particles at a pressure of 25 psi for 5 seconds. Devices incorporating the glass articles described herein and methods for making the same are also disclosed.
    Type: Application
    Filed: February 28, 2020
    Publication date: June 25, 2020
    Inventors: Steven Edward DeMartino, Michelle Dawn Fabian, Jeffrey Todd Kohli, Jennifer Lynn Lyon, Charlene Marie Smith, Zhongzhi Tang
  • Patent number: 10676389
    Abstract: A glass article includes an alkali-alkaline-alumino-silicate composition, wherein the glass article has a coefficient of thermal expansion (CTE) in a range from about 110×10?7/° C. to about 130×10?7/° C. over a temperature range of 0-300° C.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: June 9, 2020
    Assignee: Corning Incorporated
    Inventors: Jeffrey Todd Kohli, Ronald Leroy Stewart
  • Patent number: 10579106
    Abstract: Embodiments of this disclosure pertain to a strengthened glass article including a first surface and a second surface opposing the first surface defining a thickness (t) of about less than about 1.1 mm, a compressive stress layer extending from the first surface to a depth of compression (DOC) of about 0.1·t or greater, such that when the glass article fracture, it breaks into a plurality of fragments having an aspect ratio of about 5 or less. In some embodiments, the glass article exhibits an equibiaxial flexural strength of about 20 kgf or greater, after being abraded with 90-grit SiC particles at a pressure of 25 psi for 5 seconds. Devices incorporating the glass articles described herein and methods for making the same are also disclosed.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: March 3, 2020
    Assignee: Corning Incorporated
    Inventors: Steven Edward DeMartino, Michelle Dawn Fabian, Jeffrey Todd Kohli, Jennifer Lynn Lyon, Charlene Marie Smith, Zhongzhi Tang
  • Publication number: 20190039942
    Abstract: A glass article includes an alkali-alkaline-alumino-silicate composition, wherein the glass article has a coefficient of thermal expansion (CTE) in a range from about 110×10?7/° C. to about 130×10?7/° C. over a temperature range of 0-300° C.
    Type: Application
    Filed: September 29, 2016
    Publication date: February 7, 2019
    Applicant: Corning Incorporated
    Inventors: Jeffrey Todd KOHLI, Ronald Leroy STEWART
  • Patent number: 9977470
    Abstract: Embodiments of this disclosure pertain to a strengthened glass article including a first surface and a second surface opposing the first surface defining a thickness (t) of about less than about 1.1 mm, a compressive stress layer extending from the first surface to a depth of compression (DOC) of about 0.1·t or greater, such that when the glass article fracture, it breaks into a plurality of fragments having an aspect ratio of about 5 or less. In some embodiments, the glass article exhibits an equibiaxial flexural strength of about 20 kgf or greater, after being abraded with 90-grit SiC particles at a pressure of 25 psi for 5 seconds. Devices incorporating the glass articles described herein and methods for making the same are also disclosed.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: May 22, 2018
    Assignee: Corning Incorporated
    Inventors: Steven Edward DeMartino, Michelle Dawn Fabian, Jeffrey Todd Kohli, Jennifer Lynn Lyon, Charlene Marie Smith, Zhongzhi Tang
  • Publication number: 20170300088
    Abstract: Embodiments of this disclosure pertain to a strengthened glass article including a first surface and a second surface opposing the first surface defining a thickness (t) of about less than about 1.1 mm, a compressive stress layer extending from the first surface to a depth of compression (DOC) of about 0.1·t or greater, such that when the glass article fracture, it breaks into a plurality of fragments having an aspect ratio of about 5 or less. In some embodiments, the glass article exhibits an equibiaxial flexural strength of about 20 kgf or greater, after being abraded with 90-grit SiC particles at a pressure of 25 psi for 5 seconds. Devices incorporating the glass articles described herein and methods for making the same are also disclosed.
    Type: Application
    Filed: June 29, 2017
    Publication date: October 19, 2017
    Inventors: Steven Edward DeMartino, Michelle Dawn Fabian, Jeffrey Todd Kohli, Jennifer Lynn Lyon, Charlene Marie Smith, Zhongzhi Tang
  • Patent number: 9701569
    Abstract: Embodiments of this disclosure pertain to a strengthened glass article including a first surface and a second surface opposing the first surface defining a thickness (t) of about less than about 1.1 mm, a compressive stress layer extending from the first surface to a depth of compression (DOC) of about 0.1·t or greater, such that when the glass article fracture, it breaks into a plurality of fragments having an aspect ratio of about 5 or less. In some embodiments, the glass article exhibits an equibiaxial flexural strength of about 20 kgf or greater, after being abraded with 90-grit SiC particles at a pressure of 25 psi for 5 seconds. Devices incorporating the glass articles described herein and methods for making the same are also disclosed.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: July 11, 2017
    Assignee: Corning Incorporated
    Inventors: Steven Edward DeMartino, Michelle Dawn Fabian, Jeffrey Todd Kohli, Jennifer Lynn Lyon, Charlene Marie Smith, Zhongzhi Tang
  • Patent number: 9556064
    Abstract: A method of making a strengthened glass article includes providing a flat glass article having a select contour and a glass surface covered by a protective coating layer. The protective coating layer is removed from the glass surface without touching the glass surface with any solid object. Immediately after the protective coating layer is removed from the glass surface, the flat glass article is subjected to an ion-exchange process to strengthen the flat glass article and improve the resistance of the flat glass article to subsequent damage.
    Type: Grant
    Filed: May 8, 2013
    Date of Patent: January 31, 2017
    Assignee: Corning Incorporated
    Inventors: Thomas George Capek, Gregory Scott Glaesemann, Jeffrey Todd Kohli
  • Publication number: 20170022093
    Abstract: Embodiments of this disclosure pertain to a strengthened glass article including a first surface and a second surface opposing the first surface defining a thickness (t) of about less than about 1.1 mm, a compressive stress layer extending from the first surface to a depth of compression (DOC) of about 0.1·t or greater, such that when the glass article fracture, it breaks into a plurality of fragments having an aspect ratio of about 5 or less. In some embodiments, the glass article exhibits an equibiaxial flexural strength of about 20 kgf or greater, after being abraded with 90-grit SiC particles at a pressure of 25 psi for 5 seconds. Devices incorporating the glass articles described herein and methods for making the same are also disclosed.
    Type: Application
    Filed: July 20, 2016
    Publication date: January 26, 2017
    Inventors: Steven Edward DeMartino, Michelle Dawn Fabian, Jeffrey Todd Kohli, Jennifer Lynn Lyon, Charlene Marie Smith, Zhongzhi Tang
  • Publication number: 20170022092
    Abstract: Embodiments of this disclosure pertain to a strengthened glass article including a first surface and a second surface opposing the first surface defining a thickness (t) of about less than about 1.1 mm, a compressive stress layer extending from the first surface to a depth of compression (DOC) of about 0.1·t or greater, such that when the glass article fracture, it breaks into a plurality of fragments having an aspect ratio of about 5 or less. In some embodiments, the glass article exhibits an equibiaxial flexural strength of about 20 kgf or greater, after being abraded with 90-grit SiC particles at a pressure of 25 psi for 5 seconds. Devices incorporating the glass articles described herein and methods for making the same are also disclosed.
    Type: Application
    Filed: July 20, 2016
    Publication date: January 26, 2017
    Inventors: Steven Edward DeMartino, Michelle Dawn Fabian, Jeffrey Todd Kohli, Jennifer Lynn Lyon, Charlene Marie Smith, Zhongzhi Tang
  • Patent number: 9279912
    Abstract: A glass article including: at least one anti-glare surface having haze, distinctness-of-image, surface roughness, and uniformity properties, as defined herein. A method of making the article having an anti-glare surface includes, for example, forming a protective film on selected portions of at least one surface of the article; contacting the at least one surface with a liquid etchant; and removing the protective film from the surface of the article to form the anti-glare surface. A display system that incorporates the glass article, as defined herein, is also disclosed.
    Type: Grant
    Filed: February 16, 2015
    Date of Patent: March 8, 2016
    Assignee: Corning Incorporated
    Inventors: Jeffrey Todd Kohli, Kelvin Nguyen, Lu Zhang
  • Publication number: 20150368149
    Abstract: Glasses that can be chemically strengthened and are colored by transition metals. Most of the glasses are black, with some having high damage resistance and compressive surface layers having high compressive stress and depth of layer after ion exchange. These colored glasses do not require a post-forming heat treatment to produce color and are formable by fusions drawing, rolling, slot drawing, and float glass processes.
    Type: Application
    Filed: January 28, 2014
    Publication date: December 24, 2015
    Inventors: Xiaoju Guo, Jeffrey Todd Kohli, John Christopher Mauro, Ronald LeRoy Stewart