Patents by Inventor Venkatesh Botu
Venkatesh Botu 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: 11939260Abstract: 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: GrantFiled: August 12, 2022Date of Patent: March 26, 2024Assignee: Corning IncorporatedInventors: Venkatesh Botu, Xiaoju Guo, Ellen Anne King, Lisa Ann Lamberson, Adama Tandia, Kochuparambil Deenamma Vargheese, Jingshi Wu
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Patent number: 11834368Abstract: The embodiments described herein relate to low temperature moldable sheet forming glass compositions and glass articles formed from the same. In various embodiments, the glass composition comprises from about 60 mol. % to about 67 mol. % SiO2, from about 6 mol. % to about 11 mol. % B2O3, from about 4.5 mol. % to about 11 mol. % Li2O, Al2O3, Na2O, and K2O. The glass composition also includes greater than about 2 mol. % RO, where RO are divalent metal oxides, and R2O from about 14 mol. % to about 20 mol. %, where R2O are alkali metal oxides. The glass composition also has a glass transition temperature Tg of less than about 500° C., a softening point of less than about 650° C., and a coefficient of thermal expansion (CTE) of less than about 85×10?7K?1.Type: GrantFiled: January 18, 2023Date of Patent: December 5, 2023Assignee: CORNING INCORPORATEDInventors: Venkatesh Botu, Matthew John Dejneka, Nadja Teresia Lönnroth, Adama Tandia, Kochuparambil Deenamma Vargheese
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Publication number: 20230271875Abstract: A method of forming a glass laminate includes providing a substrate having a core layer and at least one cladding layer; heat treating the substrate at a temperature such that the at least one cladding layer is phase-separated after the heat treating; and etch treating the substrate for at least 10 sec. A phase-separated glass laminate includes a substrate having a core layer and at least one phase-separated cladding layer, such that the glass laminate has a % transmission of at least 96%, and the at least one cladding layer comprises a grain size in a range of 10 nm to 1 ?m, or a graded glass index of greater than 5 nm.Type: ApplicationFiled: May 5, 2021Publication date: August 31, 2023Inventors: Venkatesh Botu, Attila Lang de Falussy, Jin Su Kim, Karl William Koch, III, Aize Li, James Patrick Trice
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Publication number: 20230150862Abstract: The embodiments described herein relate to low temperature moldable sheet forming glass compositions and glass articles formed from the same. In various embodiments, the glass composition comprises from about 60 mol. % to about 67 mol. % SiO2, from about 6 mol. % to about 11 mol. % B2O3, from about 4.5 mol. % to about 11 mol. % Li2O, Al2O3, Na2O, and K2O. The glass composition also includes greater than about 2 mol. % RO, where RO are divalent metal oxides, and R2O from about 14 mol. % to about 20 mol. %, where R2O are alkali metal oxides. The glass composition also has a glass transition temperature Tg of less than about 500° C., a softening point of less than about 650° C., and a coefficient of thermal expansion (CTE) of less than about 85×10?7K?1.Type: ApplicationFiled: January 18, 2023Publication date: May 18, 2023Inventors: Venkatesh Botu, Matthew John Dejneka, Nadja Teresia Lönnroth, Adama Tandia, Kochuparambil Deenamma Vargheese
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Patent number: 11644609Abstract: A transparent illumination system and related light guide plate is provided. The system is configured to facilitate total internal reflection propagation of light through the light guide plate despite low index of refraction differences between the glass material of the light guide layer and the adjacent layer. The system includes a light source, such as a laser diode, and an optical element to fan out light from the light source in the plane of the light guide plate. The light guide plate includes internal light extraction features.Type: GrantFiled: June 30, 2021Date of Patent: May 9, 2023Assignee: Corning IncorporatedInventors: Venkatesh Botu, Roni Daniel Levi, Christian Alexander Rothenbach Stacey, Andrew Joseph Sullivan, James Andrew West
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Patent number: 11591255Abstract: The embodiments described herein relate to low temperature moldable sheet forming glass compositions and glass articles formed from the same. In various embodiments, the glass composition comprises from about 60 mol. % to about 67 mol. % SiO2, from about 6 mol. % to about 11 mol. % B2O3, from about 4.5 mol. % to about 11 mol. % Li2O, Al2O3, Na2O, and K2O. The glass composition also includes greater than about 2 mol. % RO, where RO are divalent metal oxides, and R2O from about 14 mol. % to about 20 mol. %, where R2O are alkali metal oxides. The glass composition also has a glass transition temperature Tg of less than about 500 C, a softening point of less than about 650 C, and a coefficient of thermal expansion (CTE) of less than about 85×10?7 K?1.Type: GrantFiled: May 17, 2019Date of Patent: February 28, 2023Assignee: CORNING INCORPORATEDInventors: Venkatesh Botu, Matthew John Dejneka, Nadja Teresia Lönnroth, Adama Tandia, Kochuparambil Deenamma Vargheese
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Publication number: 20220413220Abstract: A process for forming glass planar waveguide structure includes producing or obtaining a fusion drawn glass laminate (10) comprising a core glass layer (10) and a first clad glass layer (14) and a second clad glass layer (16) then removing or thinning portions of at least the second glass clad layer (16) leaving remaining or thicker portions of the second glass clad layer (16), the remaining or thicker portions corresponding to a planar waveguide pattern and resulting in a glass planar waveguide structure.Type: ApplicationFiled: November 20, 2020Publication date: December 29, 2022Inventors: Venkatesh Botu, Ming-Jun Li, William James Miller
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Publication number: 20220396518Abstract: 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: ApplicationFiled: August 12, 2022Publication date: December 15, 2022Inventors: Venkatesh Botu, Xiaoju Guo, Ellen Anne King, Lisa Ann Lamberson, Adama Tandia, Kochuparambil Deenamma Vargheese, Jingshi Wu
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Patent number: 11420897Abstract: 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: GrantFiled: June 10, 2019Date of Patent: August 23, 2022Assignee: Corning IncorporatedInventors: Venkatesh Botu, Xiaoju Guo, Ellen Anne King, Lisa Ann Lamberson, Adama Tandia, Kochuparambil Deenamma Vargheese, Jingshi Wu
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Publication number: 20220204388Abstract: Chemically durable glass compositions are disclosed. In embodiments, the glass composition includes: 48 mol. % to 61 mol. % SiO2; 0 mol. % to 1 mol. % Al2O3; 7 mol. % to 20 mol. % B2O3; 9 mol. % to 16 mol. % R2O, where R2O is a sum of alkali oxides present in the glass composition; 9 mol. % to 15 mol. % Na2O; and 8 mol. % to 21 mol. % ZnO. The glass composition may be substantially free of Li2O. RO (mol. %)<0.5×ZnO (mol. %), where RO is a sum of the alkaline earth oxides in the glass composition. An average coefficient of thermal expansion of the glass composition is 75×10?7/° C. to 88×10?7/° C. over a temperature range from about 20° C. to about 300° C. The glass composition comprises a softening point less than or equal to 660° C. The glass composition comprises a hydrolytic resistance of class HGA1 or class HGA2 according to ISO 720:1985.Type: ApplicationFiled: April 28, 2020Publication date: June 30, 2022Inventors: Venkatesh Botu, Matthew John Dejneka, Nadja Teresia Lönnroth, Adama Tandia, Kochuparambil Deenamma Vargheese
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Publication number: 20210405278Abstract: A transparent illumination system and related light guide plate is provided. The system is configured to facilitate total internal reflection propagation of light through the light guide plate despite low index of refraction differences between the glass material of the light guide layer and the adjacent layer. The system includes a light source, such as a laser diode, and an optical element to fan out light from the light source in the plane of the light guide plate. The light guide plate includes internal light extraction features.Type: ApplicationFiled: June 30, 2021Publication date: December 30, 2021Inventors: Venkatesh Botu, Roni Daniel Levi, Christian Alexander Rothenbach Stacey, Andrew Joseph Sullivan, James Andrew West
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Publication number: 20210387442Abstract: A laminate glass article is provided that includes: a core glass layer comprising a first coefficient of thermal expansion (CTE); and a plurality of clad glass layers, each comprising a first primary surface, a second primary surface in contact with the core glass layer and a second CTE that is lower than the first CTE of the core glass layer. The difference in the first and second CTE is about 10×10?7/#C to about 70×10?7/#C. Further, each of the core glass layer and the clad glass layers comprises a viscosity from 109.0 to 1014.0 Poise from about 550#C to about 700#C.Type: ApplicationFiled: November 1, 2019Publication date: December 16, 2021Inventors: Heather Debra Boek, Venkatesh Botu, Timothy Michael Gross, Balamurugan Meenakshi Sundaram, Adama Tandia, Lisa Anne Tietz Moore, Kochuparambil Deenamma Vargheese, Mark Owen Weller
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Publication number: 20210269354Abstract: 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: ApplicationFiled: June 10, 2019Publication date: September 2, 2021Inventors: Venkatesh Botu, Xiaoju Guo, Ellen Anne King, Lisa Ann Lamberson, Adama Tandia, Kochuparambil Deenamma Vargheese, Jingshi Wu
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Publication number: 20210221731Abstract: The embodiments described herein relate to low temperature moldable sheet forming glass compositions and glass articles formed from the same. In various embodiments, the glass composition comprises from about 60 mol. % to about 67 mol. % SiO2, from about 6 mol. % to about 11 mol. % B2O3, from about 4.5 mol. % to about 11 mol. % Li2O, Al2O3, Na2O, and K2O. The glass composition also includes greater than about 2 mol. % RO, where RO are divalent metal oxides, and R2O from about 14 mol. % to about 20 mol. %, where R2O are alkali metal oxides. The glass composition also has a glass transition temperature Tg of less than about 500 C., a softening point of less than about 650 C, and a coefficient of thermal expansion (CTE) of less than about 85×10?7K?1.Type: ApplicationFiled: May 17, 2019Publication date: July 22, 2021Inventors: Venkatesh Botu, Matthew John Dejneka, Nadja Teresia Lönnroth, Adama Tandia, Kochuparambil Deenamma Vargheese