公开(公告)号：US20170240456A1

公开(公告)日：2017-08-24

申请号：US15432404

申请日：2017-02-14

申请人： Corning Incorporated

发明人： Ravindra Kumar Akarapu ,  Ming-Jun Li ,  Anping Liu ,  Barada Kanta Nayak ,  Bruce Warren Reding

IPC分类号： C03B37/12 ,  C03B37/025 ,  G02B6/02

CPC分类号： C03B37/12 ,  C03B37/025 ,  C03B37/02727 ,  C03B2205/20 ,  C03B2205/42 ,  G02B5/10 ,  G02B6/02 ,  Y02P40/57

摘要： A method and corresponding apparatus for processing optical fiber include directing light from a directed light source toward an optical fiber on a fiber draw. A fiber core of the optical fiber is heated, using at least the light from the directed light source, to a fiber core temperature within a glass transformation temperature range of the fiber core. The method can be used to reduce fictive temperature of the fiber core, with Rayleigh scattering being reduced, leading to lower attenuation losses in the fiber core.

公开(公告)号：US11999074B2

公开(公告)日：2024-06-04

申请号：US17634771

申请日：2020-08-07

申请人： CORNING INCORPORATED

发明人： Ravindra Kumar Akarapu ,  Priyank Paras Jain ,  Xinghua Li ,  John Forrest Wight, Jr.

IPC分类号： B28B11/24 ,  B28B3/26

CPC分类号： B28B11/243 ,  B28B3/269

摘要： An extrusion system (100) according to certain aspects includes at least one infrared emitting device (102) arranged in a generally cylindrical shape with a hollow interior. The at least one infrared emitting device (102) is positioned downstream of an outlet of an extrusion die (110) to irradiate a perimeter of wet extrudate material in a uniform manner to form stiffened wet extrudate material (116) before such material is received by an extrudate support channel (118). The at least one infrared emitting device (102) generally uniformly stiffens the skin of the wet extrudate material (116) to resist mechanical deformation of the extrudate material during subsequent handling steps. Such skin stiffening allows for increased tolerance of handling forces and permits extrusion of softer wet extrudate material without compromising the shape of a fired ceramic product.

公开(公告)号：US11952305B2

公开(公告)日：2024-04-09

申请号：US17490720

申请日：2021-09-30

申请人： CORNING INCORPORATED

发明人： Ravindra Kumar Akarapu ,  Joel Patrick Carberry ,  David Alan Deneka ,  Steven Akin Dunwoody ,  Kenneth Edward Hrdina ,  John Michael Jewell ,  Yuanjie Jiang ,  Nikolaos Pantelis Kladias ,  Ming-Jun Li ,  Barada Kanta Nayak ,  Dale Robert Powers ,  Chunfeng Zhou ,  Vincent Matteo Tagliamonti ,  Christopher Scott Thomas

IPC分类号： C03B37/027 ,  C03B37/029

CPC分类号： C03B37/02727 ,  C03B37/029 ,  C03B2205/55 ,  C03B2205/56

摘要： In some embodiments, a method for processing an optical fiber includes: drawing an optical fiber through a draw furnace, conveying the optical fiber through a flame reheating device downstream from the draw furnace, wherein the flame reheating device comprises one or more burners each comprising: a body having a top surface and an opposing bottom surface, an opening within the body extending from the top surface through the body to the bottom surface, wherein the optical fiber passes through the opening, and one or more gas outlets within the body; and igniting a flammable gas provided by the one or more gas outlets to form a flame encircling the optical fiber passing through the opening, wherein the flame heats the optical fiber by at least 100 degrees Celsius at a heating rate exceeding 10,000 degrees Celsius/second.

公开(公告)号：US11130701B2

公开(公告)日：2021-09-28

申请号：US16910266

申请日：2020-06-24

申请人： CORNING INCORPORATED

发明人： Ravindra Kumar Akarapu ,  Garrett Andrew Piech ,  Sergio Tsuda ,  James Andrew West

IPC分类号： C03B33/08 ,  B23K26/53 ,  B23K26/06 ,  B23K26/00 ,  B23K26/067 ,  B23K26/073 ,  B23K26/08 ,  B23K26/38 ,  C03B33/10 ,  B23K103/00

摘要： A method for laser processing a transparent workpiece includes forming a contour line that includes defects, by directing a pulsed laser beam output by a beam source through an aspheric optical element positioned offset in a radial direction from the beam pathway and into the transparent workpiece such that the portion of the pulsed laser beam directed into the transparent workpiece generates an induced absorption within the transparent workpiece that produces a defect within the transparent workpiece. The portion of the pulsed laser beam directed into the transparent workpiece includes a wavelength λ, an effective spot size wo,eff, and a non-axisymmetric beam cross section having a minimum Rayleigh range ZRx,min in an x-direction and a minimum Rayleigh range ZRy,min in a y-direction. Further, the smaller of ZRx,min and ZRy,min is greater than F D = π ⁢ ⁢ w 0 , eff 2 λ , where FD is a dimensionless divergence factor comprising a value of 10 or greater.

公开(公告)号：US20190255735A1

公开(公告)日：2019-08-22

申请号：US16308222

申请日：2017-06-07

申请人： Corning Incorporated

发明人： Ravindra Kumar Akarapu ,  Priyank Paras Jain ,  Christopher John Malarkey ,  Barada Kanta Nayak

IPC分类号： B28B11/16 ,  B28B3/20 ,  B01D46/00 ,  B01D46/24 ,  B01D53/94 ,  F01N3/28

摘要： A method of manufacturing a honeycomb body, comprising extruding honeycomb extrudate (200) in an axial direction (A), the honeycomb extrudate (200) having an outer periphery (206); and laser machining in situ the honeycomb extrudate (200) to form a laser cut in the honeycomb extrudate. A system for in situ cutting a wet green ceramic extrudate, comprising a laser (500, 732, 826) configured to irradiate laser energy to an outer periphery of a wet green ceramic article, the laser energy adapted to cut through at least a portion of the outer periphery (206).

公开(公告)号：US20230415456A1

公开(公告)日：2023-12-28

申请号：US18037471

申请日：2021-11-24

申请人： CORNING INCORPORATED

发明人： Ravindra Kumar Akarapu ,  Matthew John Dejneka ,  Michael Edward DeRosa ,  Diane Kimberlie Guilfoyle ,  Camden Wayne Isenberg ,  Manuela Ocampo Davila ,  Shawn Michael O'Malley ,  Paul George Rickerl ,  Amber Leigh Tremper ,  Erick Franklin VanDuyne ,  Jonathan Earl Walter

IPC分类号： B32B17/10 ,  B32B7/02 ,  H05K5/03 ,  H05K5/02

CPC分类号： B32B17/10045 ,  B32B7/02 ,  B32B17/10807 ,  B32B17/101 ,  B32B17/10137 ,  B32B17/10651 ,  B32B17/10733 ,  B32B17/10743 ,  H05K5/03 ,  H05K5/0217 ,  B32B2307/7376 ,  B32B2307/54 ,  B32B2307/584 ,  B32B2457/20 ,  B32B2307/558

摘要： Laminated glass-based articles are provided. The glass-based articles include at least a first glass-based layer, a second glass-based layer, and a polymer layer disposed between the first and second glass-based layers. The first glass-based layer includes a compressive stress. A difference between the coefficient of thermal of expansion of the first glass-based layer and the coefficient of thermal of expansion of the second glass-based layer is greater than or equal to 0.4 ppm/° C. Methods of producing the laminated glass-based articles are also provided.

公开(公告)号：US20220098085A1

公开(公告)日：2022-03-31

申请号：US17490720

申请日：2021-09-30

申请人： CORNING INCORPORATED

发明人： Ravindra Kumar Akarapu ,  Joel Patrick Carberry ,  David Alan Deneka ,  Steven Akin Dunwoody ,  Kenneth Edward Hrdina ,  John Michael Jewell ,  Yuanjie Jiang ,  Nikolaos Pantelis Kladias ,  Ming-Jun Li ,  Barada Kanta Nayak ,  Dale Robert Powers ,  Chunfeng Zhou ,  Vincent Matteo Tagliamonti ,  Christopher Scott Thomas

IPC分类号： C03B37/027 ,  C03B37/029

摘要： In some embodiments, a method for processing an optical fiber includes: drawing an optical fiber through a draw furnace, conveying the optical fiber through a flame reheating device downstream from the draw furnace, wherein the flame reheating device comprises one or more burners each comprising: a body having a top surface and an opposing bottom surface, an opening within the body extending from the top surface through the body to the bottom surface, wherein the optical fiber passes through the opening, and one or more gas outlets within the body; and igniting a flammable gas provided by the one or more gas outlets to form a flame encircling the optical fiber passing through the opening, wherein the flame heats the optical fiber by at least 100 degrees Celsius at a heating rate exceeding 10,000 degrees Celsius/second.

公开(公告)号：US20210362370A1

公开(公告)日：2021-11-25

申请号：US16954250

申请日：2018-12-16

申请人： CORNING INCORPORATED

发明人： Ravindra Kumar Akarapu ,  Amit Halder ,  Priyank Paras Jain ,  Weidong Li

IPC分类号： B28B3/26 ,  B29C48/00 ,  B29C48/11 ,  B29C48/345 ,  F01N3/28

摘要： A thin-walled honeycomb body (100) having a plurality of repeating cell structures (110) formed of intersecting porous thick walls (112V, 112H) and thin walls (114V, 114H). Each repeating cell structure (110) is bounded on its periphery by the thick walls (112V, 122H) of a first transverse thickness (Tk) and the thin walls (114V, 114H) have a second transverse thickness (Tt) that subdivides each repeating cell structure (110) into between 7 and 36 individual cells (108). In the thin-walled honeycomb body (100), the first transverse thickness (Tk) of the thick walls (112V, 112H) is less than or equal to 0.127 mm (0.005 inch) and the second transverse thickness (Tt) of the thin walls (114V, 114H) is less than or equal to 0.0635 mm (0.0025 inch), and Tk>Tt. Honeycomb extrusion dies and methods of manufacturing the thin-walled honeycomb body (100) having thick walls (112V, 112H) and thin walls (114V, 114H) are provided.

公开(公告)号：US10730783B2

公开(公告)日：2020-08-04

申请号：US15718848

申请日：2017-09-28

申请人： CORNING INCORPORATED

发明人： Ravindra Kumar Akarapu ,  Garrett Andrew Piech ,  Sergio Tsuda ,  James Andrew West

IPC分类号： B23K26/40 ,  C03B33/08 ,  B23K26/53 ,  B23K26/06 ,  B23K26/00 ,  B23K26/067 ,  B23K26/073 ,  B23K26/08 ,  B23K26/38 ,  C03B33/10 ,  B23K103/00

摘要： A method for laser processing a transparent workpiece includes forming a contour line that includes defects, by directing a pulsed laser beam output by a beam source through an aspheric optical element positioned offset in a radial direction from the beam pathway and into the transparent workpiece such that the portion of the pulsed laser beam directed into the transparent workpiece generates an induced absorption within the transparent workpiece that produces a defect within the transparent workpiece. The portion of the pulsed laser beam directed into the transparent workpiece includes a wavelength λ, an effective spot size wo,eff, and a non-axisymmetric beam cross section having a minimum Rayleigh range ZRx,min in an x-direction and a minimum Rayleigh range ZRy,min in a y-direction. Further, the smaller of ZRx,min and ZRy,min is greater than F D ⁢ π ⁢ ⁢ w 0 , eff 2 λ , where FD is a dimensionless divergence factor comprising a value of 10 or greater.

公开(公告)号：US20180001517A1

公开(公告)日：2018-01-04

申请号：US15708835

申请日：2017-09-19

申请人： Corning Incorporated

发明人： Ravindra Kumar Akarapu ,  Derik Alan Bruins ,  Jacob George ,  Amit halder ,  Charlotte Diane Milia ,  Kaitlin Smith Olmstead

IPC分类号： B29C35/04 ,  B28B11/24 ,  C04B41/85 ,  C04B41/50 ,  C04B41/00 ,  B28B17/00 ,  C04B111/00 ,  B29C35/08

CPC分类号： B29C35/04 ,  B28B11/241 ,  B28B11/243 ,  B28B17/0081 ,  B29C2035/0822 ,  B29C2035/0855 ,  C04B41/0072 ,  C04B41/009 ,  C04B41/5089 ,  C04B41/85 ,  C04B2111/00793 ,  F26B2210/02 ,  C04B35/00 ,  C04B38/0006 ,  C04B35/195 ,  C04B14/465 ,  C04B41/5035

摘要： A method and system to dry crack-free and high strength skin including an inorganic binder of an average particle size (D50) in a range between 10 nm and 700 nm on a porous ceramic body. The method includes supporting the honeycomb body on an end face such that axial channels and outer periphery are substantially vertical. A gas is flowed past the honeycomb body substantially parallel to the axial channel direction, substantially equally around the outer periphery of the skin, to uniformly dry the skin to form a partially dried skin under mild conditions. Then the partially dried skin may be dried more severely resulting in rapidly dried crack-free and high strength skin.