Patents by Inventor Douglas Gregg Neilson
Douglas Gregg Neilson 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: 11524920Abstract: An optical fiber coating apparatus that provides increased gyre stability and reduced gyre strength, thereby providing a more reliable coating application process during fiber drawing includes a cone-only coating die having a conical entrance portion with a tapered wall angled at a half angle ?, wherein 2°???25°, and a cone height L1 less than 2.2 mm, and a cylindrical portion having an inner diameter of d2, wherein 0.1 mm?d2?0.5 mm and a cylindrical height of L2, wherein 0.05 mm?L2?1.Type: GrantFiled: December 4, 2020Date of Patent: December 13, 2022Assignee: Corning IncorporatedInventors: Sumitava De, Robert Clark Moore, Douglas Gregg Neilson, Pushkar Tandon
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Patent number: 11440839Abstract: An optical fiber coating apparatus that provides increased gyre stability and reduced gyre strength, thereby providing a more reliable coating application process during fiber drawing includes a cone-only coating die having a conical entrance portion with a tapered wall angled at a half angle ?, wherein 2°???25°, and a cone height L1 less than 2.2 mm, and a cylindrical portion having an inner diameter of d2, wherein 0.1 mm?d2?0.5 mm and a cylindrical height of L2, wherein 0.05 mm?L2?1.Type: GrantFiled: December 4, 2020Date of Patent: September 13, 2022Assignee: Corning IncorporatedInventors: Sumitava De, Robert Clark Moore, Douglas Gregg Neilson, Pushkar Tandon
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Publication number: 20210395143Abstract: Provided herein is a method of and system for processing an optical fiber. The method includes the steps of drawing an optical fiber in a drawing direction along a process pathway through a coating chamber comprising an inlet and an outlet, and a coating liquid volume to coat the optical fiber; supplying the coating liquid through the inlet, the coating liquid exiting the coating chamber through the outlet; and recirculating to coating liquid exiting the coating chamber to the inlet.Type: ApplicationFiled: May 27, 2021Publication date: December 23, 2021Inventors: Derrick Baxter Biddix, Kenneth James Kelmer, Robert Clark Moore, Douglas Gregg Neilson, Donald Justin Sonnett, Jennifer Nicole Subler, David Andrew Tucker, John Edward Watson
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Publication number: 20210086225Abstract: A method of applying a coating liquid to an optical fiber is described. An optical fiber is drawn through a guide die into a pressurized coating chamber and through the pressurized coating chamber to a sizing die. The pressurized coating chamber contains a coating liquid. The method includes directing coating liquid in a direction transverse to the processing pathway of the optical fiber in the pressurized coating chamber. The transverse flow of coating liquid counteracts detrimental effects associated with gyres that form in the pressurized coating chamber during the draw process. Benefits of the transverse flow include removal of bubbles, reduction in the temperature of the gyre, improved wetting, homogenization of the properties of the coating liquid in the pressurized coating chamber, and stabilization of the meniscus.Type: ApplicationFiled: November 30, 2020Publication date: March 25, 2021Inventors: Robert Clark Moore, Douglas Gregg Neilson, Johnnie Edward Watson
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Publication number: 20210087107Abstract: An optical fiber coating apparatus that provides increased gyre stability and reduced gyre strength, thereby providing a more reliable coating application process during fiber drawing includes a cone-only coating die having a conical entrance portion with a tapered wall angled at a half angle ?, wherein 2°???25°, and a cone height L1 less than 2.2 mm, and a cylindrical portion having an inner diameter of d2, wherein 0.1 mm?d2?0.5 mm and a cylindrical height of L2, wherein 0.05 mm?L2?1.Type: ApplicationFiled: December 4, 2020Publication date: March 25, 2021Inventors: Sumitava De, Robert Clark Moore, Douglas Gregg Neilson, Pushkar Tandon
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Publication number: 20210087108Abstract: An optical fiber coating apparatus that provides increased gyre stability and reduced gyre strength, thereby providing a more reliable coating application process during fiber drawing includes a cone-only coating die having a conical entrance portion with a tapered wall angled at a half angle ?, wherein 2°???25°, and a cone height L1 less than 2.2 mm, and a cylindrical portion having an inner diameter of d2, wherein 0.1 mm?d2?0.5 mm and a cylindrical height of L2, wherein 0.05 mm?L2?1.Type: ApplicationFiled: December 4, 2020Publication date: March 25, 2021Inventors: Sumitava De, Robert Clark Moore, Douglas Gregg Neilson, Pushkar Tandon
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Patent number: 10888894Abstract: A method of applying a coating liquid to an optical fiber is described. An optical fiber is drawn through a guide die into a pressurized coating chamber and through the pressurized coating chamber to a sizing die. The pressurized coating chamber contains a coating liquid. The method includes directing coating liquid in a direction transverse to the processing pathway of the optical fiber in the pressurized coating chamber. The transverse flow of coating liquid counteracts detrimental effects associated with gyres that form in the pressurized coating chamber during the draw process. Benefits of the transverse flow include removal of bubbles, reduction in the temperature of the gyre, improved wetting, homogenization of the properties of the coating liquid in the pressurized coating chamber, and stabilization of the meniscus.Type: GrantFiled: April 11, 2018Date of Patent: January 12, 2021Assignee: Corning IncorporatedInventors: Robert Clark Moore, Douglas Gregg Neilson, Johnnie Edward Watson
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Patent number: 10882782Abstract: An optical fiber coating apparatus that provides increased gyre stability and reduced gyre strength, thereby providing a more reliable coating application process during fiber drawing includes a cone-only coating die having a conical entrance portion with a tapered wall angled at a half angle ?, wherein 2°???25°, and a cone height L1 less than 2.2 mm, and a cylindrical portion having an inner diameter of d2, wherein 0.1 mm?d2?0.5 mm and a cylindrical height of L2, wherein 0.05 mm?L2?1.Type: GrantFiled: January 11, 2018Date of Patent: January 5, 2021Assignee: Corning IncorporatedInventors: Sumitava De, Robert Clark Moore, Douglas Gregg Neilson, Pushkar Tandon
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Publication number: 20180304304Abstract: A method of applying a coating liquid to an optical fiber is described. An optical fiber is drawn through a guide die into a pressurized coating chamber and through the pressurized coating chamber to a sizing die. The pressurized coating chamber contains a coating liquid. The method includes directing coating liquid in a direction transverse to the processing pathway of the optical fiber in the pressurized coating chamber. The transverse flow of coating liquid counteracts detrimental effects associated with gyres that form in the pressurized coating chamber during the draw process. Benefits of the transverse flow include removal of bubbles, reduction in the temperature of the gyre, improved wetting, homogenization of the properties of the coating liquid in the pressurized coating chamber, and stabilization of the meniscus.Type: ApplicationFiled: April 11, 2018Publication date: October 25, 2018Inventors: Robert Clark Moore, Douglas Gregg Neilson, Johnnie Edward Watson
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Patent number: 10036108Abstract: One embodiment of the disclosure relates to a fiber coating apparatus having a fiber entrance opening, a conical section with walls tapered at half angles between 2 and 25° and height (also referred to as length herein) L1 between 0.25 mm and 2 mm, and a cylindrical land portion of diameter d2 between 0.1 and 0.5 mm and height (length) L2 between 0.05 and 1.25 mm.Type: GrantFiled: October 23, 2014Date of Patent: July 31, 2018Assignee: Corning IncorporatedInventors: Robert Clark Moore, Douglas Gregg Neilson
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Publication number: 20180208504Abstract: An optical fiber coating apparatus that provides increased gyre stability and reduced gyre strength, thereby providing a more reliable coating application process during fiber drawing includes a cone-only coating die having a conical entrance portion with a tapered wall angled at a half angle ?, wherein 2°???25°, and a cone height L1 less than 2.2 mm, and a cylindrical portion having an inner diameter of d2, wherein 0.1 mm?d2?0.5 mm and a cylindrical height of L2, wherein 0.05 mm?L2?1.Type: ApplicationFiled: January 11, 2018Publication date: July 26, 2018Inventors: Sumitava De, Robert Clark Moore, Douglas Gregg Neilson, Pushkar Tandon
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Patent number: 9440873Abstract: In one embodiment, an optical fiber cooling system includes a first cooling tube oriented substantially in parallel with and spaced apart from a second cooling tube such that an optical fiber pathway is positioned between the first cooling tube and the second cooling tube. The first cooling tube includes a plurality of cooling fluid outlets positioned along an axial length of the first cooling tube which are oriented to direct a flow of cooling fluid across the optical fiber pathway towards the second cooling tube. The second cooling tube includes a plurality of cooling fluid outlets positioned along an axial length of the second cooling tube which are oriented to direct a flow of cooling fluid across the optical fiber pathway towards the first cooling tube.Type: GrantFiled: August 6, 2013Date of Patent: September 13, 2016Assignee: Corning IncorporatedInventors: Gary Alan Cummings, Samir Khanna, Douglas Gregg Neilson, Thomas Andre Pedersen, Massoud Rahiminejad, Bruce Warren Reding
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Publication number: 20150147467Abstract: One embodiment of the disclosure relates to a fiber coating apparatus having a fiber entrance opening, a conical section with walls tapered at half angles between 2 and 25° and height (also referred to as length herein) L1 between 0.25 mm and 2 mm, and a cylindrical land portion of diameter d2 between 0.1 and 0.5 mm and height (length) L2 between 0.05 and 1.Type: ApplicationFiled: October 23, 2014Publication date: May 28, 2015Inventors: Robert Clark Moore, Douglas Gregg Neilson
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Publication number: 20130312461Abstract: In one embodiment, an optical fiber cooling system includes a first cooling tube oriented substantially in parallel with and spaced apart from a second cooling tube such that an optical fiber pathway is positioned between the first cooling tube and the second cooling tube. The first cooling tube includes a plurality of cooling fluid outlets positioned along an axial length of the first cooling tube which are oriented to direct a flow of cooling fluid across the optical fiber pathway towards the second cooling tube. The second cooling tube includes a plurality of cooling fluid outlets positioned along an axial length of the second cooling tube which are oriented to direct a flow of cooling fluid across the optical fiber pathway towards the first cooling tube.Type: ApplicationFiled: August 6, 2013Publication date: November 28, 2013Applicant: Corning IncorporatedInventors: Gary Alan Cummings, Samir Khanna, Douglas Gregg Neilson, Thomas Andre Pedersen, Massoud Rahiminejad, Bruce Warren Reding
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Patent number: 8578737Abstract: This disclosure relates to methods and apparatus for controlling glass flow in, for example, a downdraw glass manufacturing process (e.g., the fusion downdraw process). The methods and apparatus are particularly well-suited for use in the manufacture of glass sheets such as the glass sheets used as substrates in display devices, e.g., liquid crystal displays (LCDs).Type: GrantFiled: January 23, 2013Date of Patent: November 12, 2013Assignee: Corning IncorporatedInventors: Olus Naili Boratav, Keith Raymond Gaylo, Kiat Chyai Kang, Bulent Kocatulum, Steven Michael Milillo, Douglas Gregg Neilson
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Patent number: 8528367Abstract: In one embodiment, an optical fiber cooling system includes a first cooling tube oriented substantially in parallel with and spaced apart from a second cooling tube such that an optical fiber pathway is positioned between the first cooling tube and the second cooling tube. The first cooling tube includes a plurality of cooling fluid outlets positioned along an axial length of the first cooling tube which are oriented to direct a flow of cooling fluid across the optical fiber pathway towards the second cooling tube. The second cooling tube includes a plurality of cooling fluid outlets positioned along an axial length of the second cooling tube which are oriented to direct a flow of cooling fluid across the optical fiber pathway towards the first cooling tube.Type: GrantFiled: June 25, 2012Date of Patent: September 10, 2013Assignee: Corning IncorporatedInventors: Gary Alan Cummings, Samir Khanna, Douglas Gregg Neilson, Thomas A Pedersen, Massoud Rahiminejad, Bruce Warren Reding
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Publication number: 20130133372Abstract: This disclosure relates to methods and apparatus for controlling glass flow in, for example, a downdraw glass manufacturing process (e.g., the fusion downdraw process). The methods and apparatus are particularly well-suited for use in the manufacture of glass sheets such as the glass sheets used as substrates in display devices, e.g., liquid crystal displays (LCDs).Type: ApplicationFiled: January 23, 2013Publication date: May 30, 2013Inventors: Olus Naili Boratav, Keith Raymond Gaylo, Kiat Chyai Kang, Bulent Kocatulum, Steven Michael Milillo, Douglas Gregg Neilson
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Publication number: 20120260697Abstract: In one embodiment, an optical fiber cooling system includes a first cooling tube oriented substantially in parallel with and spaced apart from a second cooling tube such that an optical fiber pathway is positioned between the first cooling tube and the second cooling tube. The first cooling tube includes a plurality of cooling fluid outlets positioned along an axial length of the first cooling tube which are oriented to direct a flow of cooling fluid across the optical fiber pathway towards the second cooling tube. The second cooling tube includes a plurality of cooling fluid outlets positioned along an axial length of the second cooling tube which are oriented to direct a flow of cooling fluid across the optical fiber pathway towards the first cooling tube.Type: ApplicationFiled: June 25, 2012Publication date: October 18, 2012Inventors: Gary Alan Cummings, Samir Khanna, Douglas Gregg Neilson, Thomas A. Pedersen, Massoud Rahiminejad, Bruce Warren Reding
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Patent number: 8230704Abstract: In one embodiment, an optical fiber cooling system includes a first cooling tube oriented substantially in parallel with and spaced apart from a second cooling tube such that an optical fiber pathway is positioned between the first cooling tube and the second cooling tube. The first cooling tube includes a plurality of cooling fluid outlets positioned along an axial length of the first cooling tube which are oriented to direct a flow of cooling fluid across the optical fiber pathway towards the second cooling tube. The second cooling tube includes a plurality of cooling fluid outlets positioned along an axial length of the second cooling tube which are oriented to direct a flow of cooling fluid across the optical fiber pathway towards the first cooling tube.Type: GrantFiled: October 25, 2010Date of Patent: July 31, 2012Assignee: Corning IncorporatedInventors: Gary Alan Cummings, Samir Khanna, Douglas Gregg Neilson, Thomas A Pedersen, Massoud Rahiminejad, Bruce Warren Reding
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Patent number: 7984625Abstract: Methods of fabricating glass sheets (13) are provided in which the sheets are cut from a glass ribbon (15) composed of a glass having a setting zone temperature range (SZTR). As the glass is drawn, it passes through the SZTR (31) and an across-the-ribbon temperature distribution is produced at least one longitudinal position along the ribbon to compensate for in-plane stress induced in the sheets (13) when flattened. Through such thermal compensation, glass sheets (13) are produced which exhibit controlled levels of distortion when cut into sub-pieces and thus are suitable for use as substrates in the manufacture of, for example, flat panel displays, e.g., LCD displays.Type: GrantFiled: September 20, 2007Date of Patent: July 26, 2011Assignee: Corning IncorporatedInventors: Shawn Rachelle Markham, Gautam Meda, Douglas Gregg Neilson, Daniel Arthur Nolet, Robert A Novak