Patents by Inventor Suresh Thakordas Gulati
Suresh Thakordas Gulati 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).
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Patent number: 11780758Abstract: A method of making a glass sheet comprises laminating a high CTE core glass to a low CTE clad glass at high temperatures and allowing the laminate to cool creating compressive stress in the clad glass, and then ion exchanging the laminate to increase the compressive stress in the outer near surface regions of the clad glass. The core glass may include ions that exchange with ion in the clad glass to increase the compressive stress in inner surface regions of the clad glass adjacent to the clad glass/core glass interfaces. The glass laminate may be formed and laminated using a fusion forming and laminating process and fusion formable and ion exchangeable glass compositions.Type: GrantFiled: June 9, 2021Date of Patent: October 10, 2023Assignee: CORNING INCORPORATEDInventors: Michael Thomas Gallagher, Suresh Thakordas Gulati, Timothy James Kiczenski, Robert Anthony Schaut, Natesan Venkataraman
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Publication number: 20210292215Abstract: A method of making a glass sheet comprises laminating a high CTE core glass to a low CTE clad glass at high temperatures and allowing the laminate to cool creating compressive stress in the clad glass, and then ion exchanging the laminate to increase the compressive stress in the outer near surface regions of the clad glass. The core glass may include ions that exchange with ion in the clad glass to increase the compressive stress in inner surface regions of the clad glass adjacent to the clad glass/core glass interfaces. The glass laminate may be formed and laminated using a fusion forming and laminating process and fusion formable and ion exchangeable glass compositions.Type: ApplicationFiled: June 9, 2021Publication date: September 23, 2021Inventors: Michael Thomas GALLAGHER, Suresh Thakordas GULATI, Timothy James KICZENSKI, Robert Anthony SCHAUT, Natesan VENKATARAMAN
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Patent number: 11059736Abstract: A method of making a glass sheet comprises laminating a high CTE core glass to a low CTE clad glass at high temperatures and allowing the laminate to cool creating compressive stress in the clad glass, and then ion exchanging the laminate to increase the compressive stress in the outer near surface regions of the clad glass. The core glass may include ions that exchange with ion in the clad glass to increase the compressive stress in inner surface regions of the clad glass adjacent to the clad glass/core glass interfaces. The glass laminate may be formed and laminated using a fusion forming and laminating process and fusion formable and ion exchangeable glass compositions.Type: GrantFiled: December 20, 2018Date of Patent: July 13, 2021Assignee: CORNING INCORPORATEDInventors: Michael Thomas Gallagher, Suresh Thakordas Gulati, Timothy James Kiczenski, Robert Anthony Schaut, Natesan Venkataraman
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Patent number: 10843439Abstract: A strengthened glass article has opposing first and second compressively stressed surface portions bound to a tensilely stressed core portion, with the first surface portion having a higher level of compressive surface stress than the second surface portion for improved resistance to surface damage, the compressively stressed surface portions being provided by lamination, ion-exchange, thermal tempering, or combinations thereof to control the stress profiles and limit the fracture energies of the articles.Type: GrantFiled: February 24, 2016Date of Patent: November 24, 2020Assignee: Corning IncorporatedInventors: Suresh Thakordas Gulati, Balram Suman
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Publication number: 20190144322Abstract: A method of making a glass sheet comprises laminating a high CTE core glass to a low CTE clad glass at high temperatures and allowing the laminate to cool creating compressive stress in the clad glass, and then ion exchanging the laminate to increase the compressive stress in the outer near surface regions of the clad glass. The core glass may include ions that exchange with ion in the clad glass to increase the compressive stress in inner surface regions of the clad glass adjacent to the clad glass/core glass interfaces. The glass laminate may be formed and laminated using a fusion forming and laminating process and fusion formable and ion exchangeable glass compositions.Type: ApplicationFiled: December 20, 2018Publication date: May 16, 2019Inventors: Michael Thomas Gallagher, Suresh Thakordas Gulati, Timothy James Kiczenski, Robert Anthony Schaut, Natesan Venkataraman
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Patent number: 10196295Abstract: A method of making a glass sheet comprises laminating a high CTE core glass to a low CTE clad glass at high temperatures and allowing the laminate to cool creating compressive stress in the clad glass, and then ion exchanging the laminate to increase the compressive stress in the outer near surface regions of the clad glass. The core glass may include ions that exchange with ion in the clad glass to increase the compressive stress in inner surface regions of the clad glass adjacent to the clad glass/core glass interfaces. The glass laminate may be formed and laminated using a fusion forming and laminating process and fusion formable and ion exchangeable glass compositions.Type: GrantFiled: November 17, 2016Date of Patent: February 5, 2019Assignee: CORNING INCORPORATEDInventors: Suresh Thakordas Gulati, Michael Thomas Gallagher, Timothy James Kiczenski, Robert Anthony Schaut, Natesan Venkataraman
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Publication number: 20170066674Abstract: A method of making a glass sheet comprises laminating a high CTE core glass to a low CTE clad glass at high temperatures and allowing the laminate to cool creating compressive stress in the clad glass, and then ion exchanging the laminate to increase the compressive stress in the outer near surface regions of the clad glass. The core glass may include ions that exchange with ion in the clad glass to increase the compressive stress in inner surface regions of the clad glass adjacent to the clad glass/core glass interfaces. The glass laminate may be formed and laminated using a fusion forming and laminating process and fusion formable and ion exchangeable glass compositions.Type: ApplicationFiled: November 17, 2016Publication date: March 9, 2017Inventors: Suresh Thakordas Gulati, Michael Thomas Gallagher, Timothy James Kiczenski, Robert Anthony Schaut, Natesan Venkataraman
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Patent number: 9522836Abstract: A method of making a glass sheet (10) comprises laminating a high CTE core glass (11) to a low CTE clad glass (12) at high temperatures and allowing the laminate (10) to cool creating compressive stress in the clad glass (12), and then ion exchanging the laminate (10) to increase the compressive stress in the outer near surface regions of the clad glass (12). The core glass (11) may include ions that exchange with ion in the clad glass (12) to increase the compressive stress in inner surface regions of the clad glass (12) adjacent to the clad glass/core glass interfaces. The glass laminate (10) may be formed and laminated using a fusion forming and laminating process and fusion formable and ion exchangeable glass compositions.Type: GrantFiled: July 20, 2012Date of Patent: December 20, 2016Assignee: Corning IncorporatedInventors: Suresh Thakordas Gulati, Michael Thomas Gallagher, Timothy James Kiczenski, Robert Anthony Schaut, Natesan Venkataraman
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Publication number: 20160167343Abstract: A strengthened glass article has opposing first and second compressively stressed surface portions bound to a tensilely stressed core portion, with the first surface portion having a higher level of compressive surface stress than the second surface portion for improved resistance to surface damage, the compressively stressed surface portions being provided by lamination, ion-exchange, thermal tempering, or combinations thereof to control the stress profiles and limit the fracture energies of the articles.Type: ApplicationFiled: February 24, 2016Publication date: June 16, 2016Inventors: Suresh Thakordas Gulati, Balram Suman
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Patent number: 9302937Abstract: A strengthened glass article has opposing first and second compressively stressed surface portions bound to a tensilely stressed core portion, with the first surface portion having a higher level of compressive surface stress than the second surface portion for improved resistance to surface damage, the compressively stressed surface portions being provided by lamination, ion-exchange, thermal tempering, or combinations thereof to control the stress profiles and limit the fracture energies of the articles.Type: GrantFiled: April 11, 2011Date of Patent: April 5, 2016Assignee: Corning IncorporatedInventors: Suresh Thakordas Gulati, Balram Suman
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Publication number: 20140141217Abstract: A method of making a glass sheet (10) comprises laminating a high CTE core glass (11) to a low CTE clad glass (12) at high temperatures and allowing the laminate (10) to cool creating compressive stress in the clad glass (12), and then ion exchanging the laminate (10) to increase the compressive stress in the outer near surface regions of the clad glass (12). The core glass (11) may include ions that exchange with ion in the clad glass (12) to increase the compressive stress in inner surface regions of the clad glass (12) adjacent to the clad glass/core glass interfaces. The glass laminate (10) may be formed and laminated using a fusion forming and laminating process and fusion formable and ion exchangeable glass compositions.Type: ApplicationFiled: July 20, 2012Publication date: May 22, 2014Applicant: Corning IncorporatedInventors: Suresh Thakordas Gulati, Michael Thomas Gallagher, Timothy James Kiczenski, Robert Anthony Schaut, Natesan Venkataraman
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Publication number: 20110281093Abstract: A strengthened glass article has opposing first and second compressively stressed surface portions bound to a tensilely stressed core portion, with the first surface portion having a higher level of compressive surface stress than the second surface portion for improved resistance to surface damage, the compressively stressed surface portions being provided by lamination, ion-exchange, thermal tempering, or combinations thereof to control the stress profiles and limit the fracture energies of the articles.Type: ApplicationFiled: April 11, 2011Publication date: November 17, 2011Inventors: Suresh Thakordas Gulati, Balram Suman
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Publication number: 20070153383Abstract: The invention is directed to a method for preparing wide strip optical polarizers by extruding glass and stretching the extruded glass to thereby elongate the polarizing metals or metal salts within the glass. The invention enables one to form a optical polarizers that have a width of 300 mm or larger depending on the size of the die used. The stretching system using two set of rollers as described herein is particularly useful for making larger sizes.Type: ApplicationFiled: October 23, 2006Publication date: July 5, 2007Inventors: Nicholas Francis Borrelli, Suresh Thakordas Gulati, David John McEnroe, Joseph Francis Schroeder
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Patent number: 7201965Abstract: A glass laminate substrate for electronic substrates, such as flat panel displays, includes a transparent glass core bounded by transparent glass skin layers, wherein the coefficient of thermal expansion of the core is greater than the coefficient of thermal expansion of the skin layers thereby forming a residual compressive stress in the skin layers and a residual tensile stress in the core. The relative thickness of the skin layers can be selected to enhance the strength of the glass laminate substrate while maintaining a sufficiently low residual tensile stress in the core to allow scribing and separating of the substrate to size. Interlayers can be located between the core and the skin layers, wherein the interlayers include a residual compressive stress, and produce a reduced residual tensile stress in the core.Type: GrantFiled: December 13, 2004Date of Patent: April 10, 2007Assignee: Corning IncorporatedInventors: Suresh Thakordas Gulati, Josef Chauncey Lapp