Patents by Inventor Christopher William Drewnowski
Christopher William Drewnowski 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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Publication number: 20240002287Abstract: An apparatus for continuous electro-thermal poling of glass or glass ceramic material, includes a lower support conveying and contacting electrode structure, an upper contacting electrode structure positioned above the lower support structure, and one or more DC bias voltage sources connected to one or both of the upper contacting structure and the lower support structure. A process for continuous electro-thermal poling of glass or glass ceramic sheets or substrates includes heating the sheet or substrate, feeding the sheet or substrate continuously or continually, while applying a DC voltage bias, and cooling the sheet or substrate to within 0-30° C. of ambient temperature.Type: ApplicationFiled: September 12, 2023Publication date: January 4, 2024Inventors: Christopher William Drewnowski, Michael Thomas Gallagher, Charles Thomas McLaren, Nicholas James Smith, Nicholas Ryan Wheeler, Thomas Michael Zajicek
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Patent number: 11773015Abstract: An apparatus for continuous electro-thermal poling of glass or glass ceramic material, includes a lower support conveying and contacting electrode structure, an upper contacting electrode structure positioned above the lower support structure, and one or more DC bias voltage sources connected to one or both of the upper contacting structure and the lower support structure. A process for continuous electro-thermal poling of glass or glass ceramic sheets or substrates includes heating the sheet or substrate, feeding the sheet or substrate continuously or continually, while applying a DC voltage bias, and cooling the sheet or substrate to within 0-30° C. of ambient temperature.Type: GrantFiled: January 27, 2021Date of Patent: October 3, 2023Assignee: Corning IncorporatedInventors: Christopher William Drewnowski, Michael Thomas Gallagher, Charles Thomas McLaren, Nicholas James Smith, Nicholas Ryan Wheeler, Thomas Michael Zajicek
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Publication number: 20220380253Abstract: A glass substrate according to one or more embodiments is disclosed. The glass substrate includes an alkali-containing bulk, at least one first alkali-depleted region, and at least one second alkali-depleted region. The alkali-containing bulk has a first surface and a second surfaces with the first and second surfaces opposing one another. The at least one first alkali-depleted region extends into the alkali-containing bulk from the first surface. The at least one second alkali-depleted region extends into the alkali-containing bulk from the second surface. The first alkali-depleted region and the second alkali-depleted region are amorphous and have a substantially homogenous composition. The first alkali-depleted region in some embodiments is a first alkali-depleted surface layer that extends across the alkali-containing bulk. The first alkali-depleted region in some embodiments is plurality of first alkali-depleted regions that are spaced apart from one another.Type: ApplicationFiled: May 19, 2022Publication date: December 1, 2022Inventors: Timothy Evan Dimond, Christopher William Drewnowski, Charles Thomas McLaren, Mardochee Reveil, Nicholas James Smith, Nicholas Ryan Wheeler, Thomas Michael Zajicek
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Publication number: 20210269348Abstract: An apparatus for dispensing hot glass during 3D printing includes a crucible with a cylindrical barrel open at a proximal end and an aperture at a distal end, a holder-actuator to hold a glass rod feedstock and move the feedstock into and within the barrel, a first heater on or adjacent the outer surface of the barrel, and a second heater on or adjacent the outer surface of the barrel energized independently, and positioned proximally, of the first heater. A method of dispensing glass during 3D printing includes feeding a glass rod feedstock into the proximal, open end of a crucible having an aperture at its distal end while maintaining the crucible at a first position within a first temperature range and maintaining the crucible at second position, proximal of the first position, within a second temperature range lower than the first temperature range.Type: ApplicationFiled: February 26, 2021Publication date: September 2, 2021Inventors: Christopher William Drewnowski, Paul Oakley Johnson, Charles Thomas McLaren, Kristen Dae Waight
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Publication number: 20210238086Abstract: An apparatus for continuous electro-thermal poling of glass or glass ceramic material, includes a lower support conveying and contacting electrode structure, an upper contacting electrode structure positioned above the lower support structure, and one or more DC bias voltage sources connected to one or both of the upper contacting structure and the lower support structure. A process for continuous electro-thermal poling of glass or glass ceramic sheets or substrates includes heating the sheet or substrate, feeding the sheet or substrate continuously or continually, while applying a DC voltage bias, and cooling the sheet or substrate to within 0-30° C. of ambient temperature.Type: ApplicationFiled: January 27, 2021Publication date: August 5, 2021Inventors: Christopher William Drewnowski, Michael Thomas Gallagher, Charles Thomas McLaren, Nicholas James Smith, Nicholas Ryan Wheeler, Thomas Michael Zajicek
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Patent number: 11065860Abstract: A method of printing a 3D object includes feeding one or more preformed materials from a feed outlet into a build zone in which a hot spot is located and using the hot spot to selectively heat the one or more preformed materials to a viscous state. Object layers are formed by depositing portions of the preformed materials on a build surface, or on another object layer on the build surface, while effecting relative motion between the build surface and the feed outlet.Type: GrantFiled: August 12, 2016Date of Patent: July 20, 2021Assignee: CORNING INCORPORATEDInventors: Christopher William Drewnowski, Michael Thomas Gallagher, Scott Michael Jarvis, Xinghua Li, Moussa N'Gom, Robert Stephen Wagner, Nicholas Ryan Wheeler
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Publication number: 20210101818Abstract: A glass article manufacturing system (10) includes a crucible (38) that defines a barrel (46) and a nozzle (54). The barrel (46) accepts a glass feedstock (62). A heater 66 is in thermal communication with the nozzle (54). The heater 66 heats the feedstock (62) within the nozzle (54). An actuator (22) is positioned proximate the barrel (46) and extrudes the feedstock (62) through the nozzle (54) as extruded feedstock.Type: ApplicationFiled: November 27, 2017Publication date: April 8, 2021Inventors: Christopher William Drewnowski, Traci Nanette Harding, Christina Marie Laskowski, Joseph Michael Matusick, Kenneth Spencer Morgan, James Paul Peris, Irene Mona Peterson, Thomas Matthew Sonner
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Publication number: 20200399159Abstract: A apparatus for making a three-dimensional object that includes: a gripping fixture having a grip surface or a pedestal having a build surface, the grip or build surface configured to hold an end of a contiguous, preformed material; a feed system having a feed outlet positioned above the grip or build surface, the feed system configured to feed the contiguous, preformed material into a build zone between the feed outlet and the grip or build surface; and a laser delivery system arranged to direct at least one laser beam through the furnace and into the build zone to form a hot spot in the build zone; and a positioning system arranged to effect relative motion between the grip or build surface and the feed outlet. In some implementations, the apparatus for making a 3D object can also include a furnace enclosing the build zone and the feed outlet.Type: ApplicationFiled: September 3, 2020Publication date: December 24, 2020Inventors: Christopher William Drewnowski, Michael S Fischer, Michael Thomas Gallagher, Xinghua Li, Nicholas Ryan Wheeler, Thomas Michael Zajicek
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Patent number: 10793461Abstract: A apparatus for making a three-dimensional object (glass, glass ceramic or ceramic) that includes: a gripping fixture 102a having a grip surface or a pedestal 102 having a build surface 130, the grip or build surface configured to hold an end of a contiguous, preformed material 106, such as a fiber or a ribbon; a feed system 100 having a feed outlet 118 positioned above the grip or build surface, the feed system configured to feed the contiguous, preformed material into a build zone between the feed outlet and the grip or build surface; and a laser delivery system 134 arranged to direct at least one laser beam through the furnace 132 and into the build zone to form a hot spot 126 in the build zone; and a positioning system 120 arranged to effect relative motion between the grip or build surface and the feed outlet. In some implementations, the apparatus for making a 3D object can also include a furnace 132 enclosing the build zone and the feed outlet.Type: GrantFiled: November 17, 2017Date of Patent: October 6, 2020Assignee: CORNING INCORPORATEDInventors: Christopher William Drewnowski, Michael Fischer, Michael Thomas Gallagher, Xinghua Li, Nicholas Ryan Wheeler, Thomas Michael Zajicek
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Patent number: 10513455Abstract: An apparatus includes a fiber feeding system to deposit a fiber on an edge of the glass article and a laser system. The laser system is positioned to project a first and a second laser beam onto a first and a second side of the fiber, respectively. The laser system is positioned to project a third laser beam onto the edge of the glass article. A method includes advancing a glass article relative to a fiber; positioning the fiber in relation to an edge of the glass article, contacting a first side of the fiber with a first laser beam, contacting a second side of the fiber with a second laser beam, depositing the fiber on the edge of the glass article, and contacting the edge of the glass article with a third laser beam.Type: GrantFiled: October 29, 2015Date of Patent: December 24, 2019Assignee: Corning IncorporatedInventors: Thomas Roger Cook, Christopher William Drewnowski, Peter Knowles, Geunsik Lim, Moussa N'Gom, Irene Mona Peterson, Robert Stephen Wagner
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Publication number: 20190352210Abstract: A apparatus for making a three-dimensional object (glass, glass ceramic or ceramic) that includes: a gripping fixture 102a having a grip surface or a pedestal 102 having a build surface 130, the grip or build surface configured to hold an end of a contiguous, preformed material 106, such as a fiber or a ribbon; a feed system 100 having a feed outlet 118 positioned above the grip or build surface, the feed system configured to feed the contiguous, preformed material into a build zone between the feed outlet and the grip or build surface; and a laser delivery system 134 arranged to direct at least one laser beam through the furnace 132 and into the build zone to form a hot spot 126 in the build zone; and a positioning system 120 arranged to effect relative motion between the grip or build surface and the feed outlet. In some implementations, the apparatus for making a 3D object can also include a furnace 132 enclosing the build zone and the feed outlet.Type: ApplicationFiled: November 17, 2017Publication date: November 21, 2019Inventors: Christopher William Drewnowski, Michael Fischer, Michael Thomas Gallagher, Xinghua Li, Nicholas Ryan Wheeler, Thomas Michael Zajicek
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Publication number: 20180237329Abstract: A method of printing a 3D object includes feeding one or more preformed materials from a feed outlet into a build zone in which a hot spot is located and using the hot spot to selectively heat the one or more preformed materials to a viscous state. Object layers are formed by depositing portions of the preformed materials on a build surface, or on another object layer on the build surface, while effecting relative motion between the build surface and the feed outlet.Type: ApplicationFiled: August 12, 2016Publication date: August 23, 2018Inventors: Christopher William Drewnowski, Michael Thomas Gallagher, Scott Michael Jarvis, Xinghua Li, Moussa N'Gom, Robert Stephen Wagner, Nicholas Ryan Wheeler
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Publication number: 20170355633Abstract: An apparatus includes a fiber feeding system to deposit a fiber on an edge of the glass article and a laser system. The laser system is positioned to project a first and a second laser beam onto a first and a second side of the fiber, respectively. The laser system is positioned to project a third laser beam onto the edge of the glass article. A method includes advancing a glass article relative to a fiber; positioning the fiber in relation to an edge of the glass article, contacting a first side of the fiber with a first laser beam, contacting a second side of the fiber with a second laser beam, depositing the fiber on the edge of the glass article, and contacting the edge of the glass article with a third laser beam.Type: ApplicationFiled: October 29, 2015Publication date: December 14, 2017Inventors: Thomas Roger Cook, Christopher William Drewnowski, Peter Knowles, Geunsik Lim, Moussa N'Gom, Irene Mona Peterson, Robert Stephen Wagner
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Patent number: 9016093Abstract: In one embodiment, a pulling roll for drawing glass sheet in a down-draw process includes a shaft member and a compliant cover assembly positioned on the shaft member. The compliant cover assembly includes at least one traction disk positioned on the shaft member. The at least one traction disk includes an annular hub and a plurality of spring elements integrally formed with the annular hub. The spring elements project outward from the annular hub such that an end of each spring element is positioned radially outward from a base of each spring element and is circumferentially offset relative to the base of each spring element.Type: GrantFiled: November 13, 2012Date of Patent: April 28, 2015Assignee: Corning IncorporatedInventors: Izhar Zahoor Ahmed, Glen Bennett Cook, Christopher William Drewnowski, Michael Thomas Gallagher, Ralph Alfred Langensiepen, George Clinton Shay
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Publication number: 20140130550Abstract: In one embodiment, a pulling roll for drawing glass sheet in a down-draw process includes a shaft member and a compliant cover assembly positioned on the shaft member. The compliant cover assembly includes at least one traction disk positioned on the shaft member. The at least one traction disk includes an annular hub and a plurality of spring elements integrally formed with the annular hub. The spring elements project outward from the annular hub such that an end of each spring element is positioned radially outward from a base of each spring element and is circumferentially offset relative to the base of each spring element.Type: ApplicationFiled: November 13, 2012Publication date: May 15, 2014Inventors: Izhar Zahoor Ahmed, Glen Bennett Cook, Christopher William Drewnowski, Michael Thomas Gallagher, Ralph Alfred Langensiepen, George Clinton Shay