Patents by Inventor Daniel Ratchford
Daniel Ratchford 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: 20230115308Abstract: Disclosed herein is a fiber having a sheath including a polymer and a core including a non-cholesteric liquid crystal. The sheath is transparent to visible light. The fiber may an average diameter of no more than 10 microns, and at least 90% of the fiber has a diameter within 20% of the average diameter. The sheath may include a compound capable of photoisomerization that extends into the core. The interference color of the fiber may be reversibly changed by exposure to light or a temperature change.Type: ApplicationFiled: October 7, 2022Publication date: April 13, 2023Applicant: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Jeffrey G. Lundin, Matthew D. Thum, Jakub Kolacz, Daniel Ratchford
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Patent number: 11414336Abstract: A muffle for a glass tube forming process includes an inlet end coupled to a bowl, an outlet end having an inner dimension larger than an inner dimension of the inlet end, and a sidewall extending from inlet end to the outlet end. A radial distance from a center axis of the muffle to an inner surface of the sidewall increases from the inlet end to the outlet end and the sidewall is substantially free of abrupt changes in the radial distance that produce instability regions within the muffle. The muffle includes a channel between an outer surface of a portion of the sidewall and an insulating layer disposed about the sidewall, the channel being operable to pass a heat transfer fluid into thermal communication with the sidewall to provide cooling to the muffle. Glass forming systems including the muffle and glass tube forming processes are also disclosed.Type: GrantFiled: November 21, 2019Date of Patent: August 16, 2022Assignee: CORNING INCORPORATEDInventors: Adam Charles Berkey, Martin A de la Torre, Sowmya Krishnamurthy, Jiandong Meng, David Posada-Pineda, Ryan Daniel Ratchford
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Publication number: 20220081804Abstract: A fiber having a polymer sheath and a core. The core has a liquid crystal and a compound capable of photoisomerization, such as that shown below. A method of: providing a first solution of a polymer, providing a second solution of a liquid crystal and compound capable of photoisomerization, and electrospinning the first solution and the second solution to form the fiber.Type: ApplicationFiled: September 15, 2021Publication date: March 17, 2022Applicant: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Jeffrey G. Lundin, Matthew D. Thum, Riccardo Casalini, Daniel Ratchford
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Patent number: 11046579Abstract: Disclosed herein is a method of providing a structure having two electrodes connected by nanowires, exposing the structure to an analyte that can adsorb onto the nanowires, and passing an electrical current through the nanowires to heat the nanowires to desorb the analyte. Also disclosed herein is an apparatus having the above structure; a current source electrically connected to the electrodes, and a detector to detect the analyte.Type: GrantFiled: December 9, 2019Date of Patent: June 29, 2021Assignee: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Braden C. Giordano, Pehr E. Pehrsson, Kevin J. Johnson, Daniel Ratchford, Christopher Field, Junghoon Yeom
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Publication number: 20200172423Abstract: A muffle for a glass tube forming process includes an inlet end coupled to a bowl, an outlet end having an inner dimension larger than an inner dimension of the inlet end, and a sidewall extending from inlet end to the outlet end. A radial distance from a center axis of the muffle to an inner surface of the sidewall increases from the inlet end to the outlet end and the sidewall is substantially free of abrupt changes in the radial distance that produce instability regions within the muffle. The muffle includes a channel between an outer surface of a portion of the sidewall and an insulating layer disposed about the sidewall, the channel being operable to pass a heat transfer fluid into thermal communication with the sidewall to provide cooling to the muffle. Glass forming systems including the muffle and glass tube forming processes are also disclosed.Type: ApplicationFiled: November 21, 2019Publication date: June 4, 2020Inventors: Adam Charles Berkey, Martin A de la Torre, Sowmya Krishnamurthy, Jiandong Meng, David Posada-Pineda, Ryan Daniel Ratchford
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Publication number: 20200109049Abstract: Disclosed herein is a method of providing a structure having two electrodes connected by nanowires, exposing the structure to an analyte that can adsorb onto the nanowires, and passing an electrical current through the nanowires to heat the nanowires to desorb the analyte. Also disclosed herein is an apparatus having the above structure; a current source electrically connected to the electrodes, and a detector to detect the analyte.Type: ApplicationFiled: December 9, 2019Publication date: April 9, 2020Applicant: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Braden C. Giordano, Pehr E. Pehrsson, Kevin J. Johnson, Daniel Ratchford, Christopher Field, Junghoon Yeom
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Patent number: 10501316Abstract: Disclosed herein is a method of providing a structure having two electrodes connected by nanowires, exposing the structure to an analyte that can adsorb onto the nanowires, and passing an electrical current through the nanowires to heat the nanowires to desorb the analyte. Also disclosed herein is an apparatus having the above structure; a current source electrically connected to the electrodes, and a detector to detect the analyte.Type: GrantFiled: April 18, 2018Date of Patent: December 10, 2019Assignee: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Braden C. Giordano, Pehr E. Pehrsson, Kevin J. Johnson, Daniel Ratchford, Christopher Field, Junghoon Yeom
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Publication number: 20180237294Abstract: Disclosed herein is a method of providing a structure having two electrodes connected by nanowires, exposing the structure to an analyte that can adsorb onto the nanowires, and passing an electrical current through the nanowires to heat the nanowires to desorb the analyte. Also disclosed herein is an apparatus having the above structure; a current source electrically connected to the electrodes, and a detector to detect the analyte.Type: ApplicationFiled: April 18, 2018Publication date: August 23, 2018Applicant: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Braden C. Giordano, Pehr E. Pehrsson, Kevin J. Johnson, Daniel Ratchford, Christopher Field, Junghoon Yeom
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Patent number: 9505564Abstract: An apparatus for producing a green body of ceramic-forming material can comprise a support device including at least one air bearing including a support surface with a plurality of apertures. In one example, the support surface is configured to circumscribe greater than 180° of a support area for the green body. In another example, the plurality of apertures include at least a quantity of apertures oriented with a fluid emitting axis extending at an oblique angle with respect to an extrusion axis. In still another example, the air bearing is adjustable. Methods for producing a green body also provide an air cushion between a support surface and the green body.Type: GrantFiled: May 12, 2016Date of Patent: November 29, 2016Assignee: Corning IncorporatedInventors: Gregory Eisenstock, Ryan Daniel Ratchford
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Publication number: 20160257505Abstract: An apparatus for producing a green body of ceramic-forming material can comprise a support device including at least one air bearing including a support surface with a plurality of apertures. In one example, the support surface is configured to circumscribe greater than 180° of a support area for the green body. In another example, the plurality of apertures include at least a quantity of apertures oriented with a fluid emitting axis extending at an oblique angle with respect to an extrusion axis. In still another example, the air bearing is adjustable. Methods for producing a green body also provide an air cushion between a support surface and the green body.Type: ApplicationFiled: May 12, 2016Publication date: September 8, 2016Inventors: Gregory Eisenstock, Ryan Daniel Ratchford
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Patent number: 9340374Abstract: An apparatus for producing a green body of ceramic-forming material can comprise a support device including at least one air bearing including a support surface with a plurality of apertures. In one example, the support surface is configured to circumscribe greater than 180° of a support area for the green body. In another example, the plurality of apertures include at least a quantity of apertures oriented with a fluid emitting axis extending at an oblique angle with respect to an extrusion axis. In still another example, the air bearing is adjustable. Methods for producing a green body also provide an air cushion between a support surface and the green body.Type: GrantFiled: June 30, 2015Date of Patent: May 17, 2016Assignee: Corning IncorporatedInventors: Gregory Eisenstock, Ryan Daniel Ratchford
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Publication number: 20150298918Abstract: An apparatus for producing a green body of ceramic-forming material can comprise a support device including at least one air bearing including a support surface with a plurality of apertures. In one example, the support surface is configured to circumscribe greater than 180° of a support area for the green body. In another example, the plurality of apertures include at least a quantity of apertures oriented with a fluid emitting axis extending at an oblique angle with respect to an extrusion axis. In still another example, the air bearing is adjustable. Methods for producing a green body also provide an air cushion between a support surface and the green body.Type: ApplicationFiled: June 30, 2015Publication date: October 22, 2015Inventors: Gregory Eisenstock, Ryan Daniel Ratchford
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Patent number: 9073250Abstract: An apparatus for producing a green body of ceramic-forming material can comprise a support device including at least one air bearing including a support surface with a plurality of apertures. In one example, the support surface is configured to circumscribe greater than 180° of a support area for the green body. In another example, the plurality of apertures include at least a quantity of apertures oriented with a fluid emitting axis extending at an oblique angle with respect to an extrusion axis. In still another example, the air bearing is adjustable. Methods for producing a green body also provide an air cushion between a support surface and the green body.Type: GrantFiled: September 8, 2011Date of Patent: July 7, 2015Assignee: Corning IncorporatedInventors: Gregory Eisenstock, Ryan Daniel Ratchford
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Publication number: 20130062819Abstract: An apparatus for producing a green body of ceramic-forming material can comprise a support device including at least one air bearing including a support surface with a plurality of apertures. In one example, the support surface is configured to circumscribe greater than 180° of a support area for the green body. In another example, the plurality of apertures include at least a quantity of apertures oriented with a fluid emitting axis extending at an oblique angle with respect to an extrusion axis. In still another example, the air bearing is adjustable. Methods for producing a green body also provide an air cushion between a support surface and the green body.Type: ApplicationFiled: September 8, 2011Publication date: March 14, 2013Inventors: Gregory Eisenstock, Ryan Daniel Ratchford