Patents by Inventor Indrajit Dutta
Indrajit Dutta 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: 11834363Abstract: A method for ceramming a glass article to a glass-ceramic includes placing a glass article into a heating apparatus, and heating the glass article to a first hold temperature at a first predetermined heating rate. The glass article is held at the first hold temperature for a first predetermined duration. The viscosity of the glass article is maintained within log viscosity ±1.0 poise during the first predetermined duration. The glass article is then heated from the first hold temperature to a second hold temperature at a second predetermined heating rate. The glass article is held at the second hold temperature for a second duration. A density of the glass article is monitored from the heating of the glass article from the first hold temperature through the second duration, and the second duration is ended when an absolute value of a density rate of change of the glass article is less than or equal to 0.10 (g/cm3)/min.Type: GrantFiled: July 15, 2019Date of Patent: December 5, 2023Assignee: CORNING INCORPORATEDInventors: Carol Ann Click, Indrajit Dutta, Ozgur Gulbiten, Jill Marie Hall, Mathieu Gerard Jacques Hubert, Andrew Peter Kittleson, Rohit Rai, John Robert Saltzer, Jr., Matthew Daniel Trosa, Zheming Zheng
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Patent number: 11823967Abstract: A glass or glass-ceramic carrier substrate, the substrate having undergone at least one complete cycle of a semiconductor fabrication process and having also undergone a reclamation process following the end of the semiconductor fabrication process; the glass or glass-ceramic carrier substrate comprising at least one of the following properties: (i) a coefficient of thermal expansion of less than 13 ppm/° C.; (ii) a Young's Modulus of 70 GPa to 150 GPa; (iii) an IR transmission of greater than 80% at a wavelength of 1064 nm; (iv) a UV transmission of greater than 20% at a wavelength of 255 nm to 360 nm; (v) a thickness tolerance within the same range as the thickness tolerance of the carrier substrate before undergoing at least one complete cycle of the semiconductor fabrication process; (vi) a total thickness variation of less than 2.5 ?m; (vii) a failure strength of greater than 80 MPa using a 4-point-bending test; (viii) a pre-shape of 50 ?m to 300 ?m.Type: GrantFiled: November 20, 2020Date of Patent: November 21, 2023Assignee: CORNING INCORPORATEDInventors: Robert Alan Bellman, Indrajit Dutta, Yi-Cheng Hsieh, Toshihiko Ono, Nicholas James Smith
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Publication number: 20230134522Abstract: A glass article includes: from 60 mol % to 80 mol % SiO2; from 5 mol % a to 25 mol % Al2O3; from 0.25 mol % to 10 mol % MgO; from 0.25 mol % to 10 mol % Na2O; from 0 mol % to 2 mol % Li2O; from 0 mol % to 9 mol % La2O3; and from 0 mol % to 9 mol % Y2O3. La2O3+Y2O3 is from 2 mol % to 9 mol %. (La2O3+Y2O3)/(R2O+RO) is from 0.1 to 2, R2O being the sum of Na2O, Li2O, and K2O, and RO being the sum of MgO, CaO, SrO, and BaO.Type: ApplicationFiled: November 1, 2022Publication date: May 4, 2023Inventors: Indrajit Dutta, Heath Aaron Filkins, Lisa Ann Lamberson
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Publication number: 20230049196Abstract: Methods of producing a glass article include melting a first glass composition and feeding a second glass composition into the melter. Both glass compositions include the same combination of components but at least one component has a concentration that is different in each. At least three glass articles may be drawn from the melter, including: a first glass article formed from the first glass composition; at least one intermediate glass article composed of neither the first nor the second glass composition; and a final glass article not composed of the first glass composition. The concentration of the at least one component in the intermediate glass article may be between the concentration in the first and second glass compositions. The first glass article and final glass article may have differing values for certain properties, and the intermediate glass article may have an intermediate set of values for the same properties.Type: ApplicationFiled: October 7, 2022Publication date: February 16, 2023Inventors: Indrajit Dutta, Jean-Marc Galea, Melinda Ann Hourihan, Lisa Ann Lamberson, Robert Michael Morena, Jian-Zhi Jay Zhang
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Publication number: 20230045976Abstract: Methods of producing a glass article include melting a first glass composition and feeding a second glass composition into the melter. Both glass compositions include the same combination of components but at least one component has a concentration that is different in each. At least three glass articles may be drawn from the melter, including: a first glass article formed from the first glass composition; at least one intermediate glass article composed of neither the first nor the second glass composition; and a final glass article not composed of the first glass composition. The concentration of the at least one component in the intermediate glass article may be between the concentration in the first and second glass compositions. The first glass article and final glass article may have differing values for certain properties, and the intermediate glass article may have an intermediate set of values for the same properties.Type: ApplicationFiled: October 7, 2022Publication date: February 16, 2023Inventors: Indrajit Dutta, Jean-Marc Galea, Melinda Ann Hourihan, Lisa Ann Lamberson, Robert Michael Morena, Jian-Zhi Jay Zhang
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Patent number: 11485663Abstract: Methods of producing a glass article include melting a first glass composition and feeding a second glass composition into the melter. Both glass compositions include the same combination of components but at least one component has a concentration that is different in each. At least three glass articles may be drawn from the melter, including: a first glass article formed from the first glass composition; at least one intermediate glass article composed of neither the first nor the second glass composition; and a final glass article not composed of the first glass composition. The concentration of the at least one component in the intermediate glass article may be between the concentration in the first and second glass compositions. The first glass article and final glass article may have differing values for certain properties, and the intermediate glass article may have an intermediate set of values for the same properties.Type: GrantFiled: August 16, 2019Date of Patent: November 1, 2022Assignee: Corning IncorporatedInventors: Indrajit Dutta, Jean Marc Galea, Melinda Ann Hourihan, Lisa Ann Lamberson, Robert Michael Morena, Jian-Zhi Jay Zhang
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Publication number: 20220344711Abstract: Lithium-containing polycrystalline ceramic sheets include grains having an average grain size of less than 5 ?m, a relative density greater than 90%, and a thickness of up to 200 ?m. In aspects, the lithium-containing polycrystalline ceramic sheets include an outer edge of the sheet that has no height variations greater than 1 mm from baseline in a perimeter trace. In aspects, the lithium-containing polycrystalline ceramic sheets include microstructural features of an outer edge of the sheet are no greater than about ? the thickness of the sheet. In aspects, the lithium-containing polycrystalline ceramic sheets include an outer edge of the sheet that is enriched in lithium relative to a bulk of the sheet.Type: ApplicationFiled: July 11, 2022Publication date: October 27, 2022Inventors: Michael Edward Badding, Indrajit Dutta, Lanrik Wayne Kester, Xinghua Li
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Patent number: 11469446Abstract: The disclosure relates to ceramic lithium ion electrolyte membranes and processes for forming them. The ceramic lithium electrolyte membrane may comprise at least one ablative edge. Exemplary processes for forming the ceramic lithium ion electrolyte membranes comprise fabricating a lithium ion electrolyte sheet and cutting at least one edge of the fabricated electrolyte sheet with an ablative laser.Type: GrantFiled: October 22, 2020Date of Patent: October 11, 2022Assignee: Corning IncorporatedInventors: Michael Edward Badding, Indrajit Dutta, Lanrik Wayne Kester, Xinghua Li
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Patent number: 11407679Abstract: Embodiments of the present disclosure pertain to crystallizable glasses and glass-ceramics that exhibit a black color and are opaque. In one or more embodiments, the crystallizable glasses and glass-ceramics include a precursor glass composition that exhibits a liquidus viscosity of greater than about 20 kPa*s. The glass-ceramics exhibit less than about 20 wt % of one or more crystalline phases, which can include a plurality of crystallites in the Fe2O3—TiO2—MgO system and an area fraction of less than about 15%. Exemplary compositions used in the crystallizable glasses and glass-ceramics include, in mol %, SiO2 in the range from about 50 to about 76, Al2O3 in the range from about 4 to about 25, P2O5+B2O3 in the range from about 0 to about 14, R2O in the range from about 2 to about 20, one or more nucleating agents in the range from about 0 to about 5, and RO in the range from about 0 to about 20.Type: GrantFiled: March 30, 2020Date of Patent: August 9, 2022Assignee: Corning IncorporatedInventors: David Eugene Baker, Matthew John Dejneka, Indrajit Dutta, Robert Michael Morena, Charlene Marie Smith
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Patent number: 11370693Abstract: A glass-ceramic article that includes an article having a glass-ceramic composition, the composition including: SiO2 from about 45% to about 65%, Al2O3 from about 14% to about 28%, TiO2 from about 2% to about 4%, ZrO2 from about 3% to about 4.5%, MgO from about 4.5% to about 12%, and ZnO from about 0.1 to about 4% (by weight of oxide). The article can include a coefficient of thermal expansion (CTE) of about 20×10?7 K?1 to about 160×10?7 K?1, as measured over a temperature range from 25° C. to 300° C.Type: GrantFiled: January 23, 2020Date of Patent: June 28, 2022Assignee: Corning IncorporatedInventors: Marie Jacqueline Monique Comte, Indrajit Dutta, Jian-Zhi Jay Zhang
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Publication number: 20210395137Abstract: A glass glass-ceramic composite comprises a substrate comprising an alkali-containing glass bulk, the bulk comprising Al2O3 and SiO2 and alkali, and a glass-ceramic surface layer, the surface layer comprising an alkali-depleted glass ceramic comprising Al2O3 and SiO2 with at least 5% crystalline phase by volume, wherein the alkali-depleted glass ceramic surface layer comprises a mol % Al2O3 of at least 51%. A method of preparing the composite is also disclosed.Type: ApplicationFiled: November 25, 2019Publication date: December 23, 2021Inventors: Indrajit Dutta, Nicholas James Smith
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Publication number: 20210395142Abstract: Embodiments of a glass substrate including an alkali-containing bulk and an alkali-depleted surface layer, including a substantially homogenous composition with at least 51 mol % Al2O3 are disclosed. In some embodiments, the alkali-depleted surface layer includes about 0.5 atomic % alkali or less. The alkali-depleted surface layer can be substantially free of hydrogen and/or crystallites. Methods for forming a glass substrate with a modified surface layer are also provided.Type: ApplicationFiled: October 25, 2019Publication date: December 23, 2021Inventors: Indrajit Dutta, Nicholas James Smith
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Patent number: 11139473Abstract: A porous silicon composition, a porous alloy composition, or a porous silicon containing cermet composition, as defined herein. A method of making: the porous silicon composition; the porous alloy composition, or the porous silicon containing cermet composition, as defined herein. Also disclosed is an electrode, and an energy storage device incorporating the electrode and at least one of the disclosed compositions, as defined herein.Type: GrantFiled: March 13, 2020Date of Patent: October 5, 2021Assignee: Corning IncorporatedInventors: Indrajit Dutta, Brian Alan Kent, Patrick David Tepesch, Shawn Michael O'Malley, Randall Eugene Youngman
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Publication number: 20210276913Abstract: A process for making a glass-ceramic article includes annealing an as-formed glass article formed from a glass-ceramic composition at a first temperature for a duration sufficient to nucleate a plurality of nuclei within a vitreous matrix of the as-formed glass article and forming a post-nucleation glass article. The process also includes annealing the post-nucleation glass article at a second temperature for a duration sufficient to grow crystalline grains within the vitreous matrix of the post-nucleation glass article and forming a glass-ceramic article. The first temperature is less than a glass transition temperature for the glass-ceramic composition and the second temperature is greater than the glass transition temperature for the glass-ceramic composition.Type: ApplicationFiled: April 18, 2019Publication date: September 9, 2021Inventors: Indrajit Dutta, Mathieu Gerard Jacques Hubert, Timothy James Kiczenski, Marion Novitovic-Dunn
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Publication number: 20210159134Abstract: A glass or glass-ceramic carrier substrate, the substrate having undergone at least one complete cycle of a semiconductor fabrication process and having also undergone a reclamation process following the end of the semiconductor fabrication process; the glass or glass-ceramic carrier substrate comprising at least one of the following properties: (i) a coefficient of thermal expansion of less than 13 ppm/° C.; (ii) a Young's Modulus of 70 GPa to 150 GPa; (iii) an IR transmission of greater than 80% at a wavelength of 1064 nm; (iv) a UV transmission of greater than 20% at a wavelength of 255 nm to 360 nm; (v) a thickness tolerance within the same range as the thickness tolerance of the carrier substrate before undergoing at least one complete cycle of the semiconductor fabrication process; (vi) a total thickness variation of less than 2.5 ?m; (vii) a failure strength of greater than 80 MPa using a 4-point-bending test; (viii) a pre-shape of 50 ?m to 300 ?m.Type: ApplicationFiled: November 20, 2020Publication date: May 27, 2021Inventors: Robert Alan Bellman, Indrajit Dutta, Yi-Cheng Hsieh, Toshihiko Ono, Nicholas James Smith
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Publication number: 20210043968Abstract: The disclosure relates to ceramic lithium ion electrolyte membranes and processes for forming them. The ceramic lithium electrolyte membrane may comprise at least one ablative edge. Exemplary processes for forming the ceramic lithium ion electrolyte membranes comprise fabricating a lithium ion electrolyte sheet and cutting at least one edge of the fabricated electrolyte sheet with an ablative laser.Type: ApplicationFiled: October 22, 2020Publication date: February 11, 2021Inventors: Michael Edward Badding, Indrajit Dutta, Lanrik Wayne Kester, Xinghua Li
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Patent number: 10854918Abstract: The disclosure relates to ceramic lithium ion electrolyte membranes and processes for forming them. The ceramic lithium electrolyte membrane may comprise at least one ablative edge. Exemplary processes for forming the ceramic lithium ion electrolyte membranes comprise fabricating a lithium ion electrolyte sheet and cutting at least one edge of the fabricated electrolyte sheet with an ablative laser.Type: GrantFiled: March 25, 2019Date of Patent: December 1, 2020Assignee: Corning IncorporatedInventors: Michael Edward Badding, Indrajit Dutta, Lanrik Wayne Kester, Xinghua Li
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Publication number: 20200239352Abstract: A glass-ceramic article that includes an article having a glass-ceramic composition, the composition including: SiO0 from about 45% to about 65%, Al2O3 from about 14% to about 28%, TiO2 from about 2% to about 4%, ZrO2 from about 3% to about 4.5%, MgO from about 4.5% to about 12%, and ZnO from about 0.1 to about 4% (by weight of oxide). The article can include a coefficient of thermal expansion (CTE) of about 20×10?7K?1 to about 160×10?7K?1, as measured over a temperature range from 25° C. to 300° C.Type: ApplicationFiled: January 23, 2020Publication date: July 30, 2020Inventors: Marie Jacqueline Monique Comte, Indrajit Dutta, Jian-Zhi Jay Zhang
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Publication number: 20200223745Abstract: Embodiments of the present disclosure pertain to crystallizable glasses and glass-ceramics that exhibit a black color and are opaque. In one or more embodiments, the crystallizable glasses and glass-ceramics include a precursor glass composition that exhibits a liquidus viscosity of greater than about 20 kPa*s. The glass-ceramics exhibit less than about 20 wt % of one or more crystalline phases, which can include a plurality of crystallites in the Fe2O3—TiO2—MgO system and an area fraction of less than about 15%. Exemplary compositions used in the crystallizable glasses and glass-ceramics include, in mol %, SiO2 in the range from about 50 to about 76, Al2O3 in the range from about 4 to about 25, P2O5+B2O3 in the range from about 0 to about 14, R2O in the range from about 2 to about 20, one or more nucleating agents in the range from about 0 to about 5, and RO in the range from about 0 to about 20.Type: ApplicationFiled: March 30, 2020Publication date: July 16, 2020Inventors: David Eugene Baker, Matthew John Dejneka, Indrajit Dutta, Robert Michael Morena, Charlene Marie Smith
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Publication number: 20200220170Abstract: A porous silicon composition, a porous alloy composition, or a porous silicon containing cermet composition, as defined herein. A method of making: the porous silicon composition; the porous alloy composition, or the porous silicon containing cermet composition, as defined herein. Also disclosed is an electrode, and an energy storage device incorporating the electrode and at least one of the disclosed compositions, as defined herein.Type: ApplicationFiled: March 13, 2020Publication date: July 9, 2020Inventors: Indrajit Dutta, Brian Alan Kent, Patrick David Tepesch, Shawn Michael O'Malley, Randall Eugene Youngman