Patents by Inventor Stephan Lvovich Logunov

Stephan Lvovich Logunov 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).

  • Patent number: 12268046
    Abstract: Disclosed herein are sealed devices comprising a first substrate, a second substrate, an inorganic film between the first and second substrates, and at least one weld region comprising a bond between the first and second substrates. The weld region can comprise a chemical composition different from that of the inorganic film and the first or second substrates. The sealed devices may further comprise a stress region encompassing at least the weld region, in which a portion of the device is under a greater stress than the remaining portion of the device. Also disclosed herein are display and electronic components comprising such sealed devices.
    Type: Grant
    Filed: June 1, 2023
    Date of Patent: April 1, 2025
    Assignee: CORNING INCORPORATED
    Inventors: Leonard Charles Dabich, II, Stephan Lvovich Logunov, Mark Alejandro Quesada, Alexander Mikhailovich Streltsov
  • Patent number: 12265075
    Abstract: Apparatuses and methods for monitoring curing of photocurable material are disclosed. The methods generally include directing an ultraviolet cure light into a photocurable material, wherein the ultraviolet cure light causes the photocurable material to cure; directing a probe light into the photocurable material through an optical fiber during the cure; collecting a back reflection signal from the photocurable material with the optical fiber; and determining a refractive index change of the photocurable material during the cure.
    Type: Grant
    Filed: March 29, 2021
    Date of Patent: April 1, 2025
    Assignee: Corning Incorporated
    Inventors: Michael Edward DeRosa, Stephan Lvovich Logunov
  • Publication number: 20250093574
    Abstract: An optical fiber that includes a silica core and a cladding surrounding the core is disclosed, the optical fiber having a low attenuation. In embodiments, the optical fiber has an attenuation at 1550 nm of about 0.1420 dB/km. Furthermore, the diameter of the core may be larger than a fundamental mode field diameter of the optical fiber at a wavelength of 1550 nm. In embodiments, the core is doped with an alkali dopant.
    Type: Application
    Filed: August 20, 2024
    Publication date: March 20, 2025
    Inventors: Rostislav Radiyevich Khrapko, Ming-Jun Li, Stephan Lvovich Logunov, Craig Daniel Nie
  • Patent number: 12222528
    Abstract: Disclosed herein are embodiments of an illuminator for disinfecting a surface. The surface defines a first plane. The illuminator includes a line emitter configured to emit light in a continuous line along at least a portion of at least one edge of the surface. The light has a peak wavelength in a range of 100 nm to 400 nm. The illuminator also includes a curved reflector surface and an exit aperture defining a second plane transverse to the first plane. The line emitter is positioned between the curved reflector surface and the exit aperture, and the curved reflector surface is configured to redirect the light from the line emitter through the exit aperture across the surface.
    Type: Grant
    Filed: March 7, 2022
    Date of Patent: February 11, 2025
    Assignees: CORNING INCORPORATED, UV PARTNERS, INC.
    Inventors: David W Baarman, Boyd Vern Hunter, Ming-Jun Li, Xiao Li, Stephan Lvovich Logunov
  • Publication number: 20250019300
    Abstract: A method of bonding glass to metal foil comprising contacting a glass substrate and a metal foil to create an interface therebetween; and directing a laser beam operating at a predetermined wavelength onto the interface to form an interfacial weld between the glass substrate and the metal foil, wherein the metal foil has a thickness greater than or equal to 5 ?m and less than or equal to 200 ?m, and wherein the laser beam comprises a pulsed laser having a pulse width greater than or equal to 1 nanosecond and less than or equal to 200 nanoseconds. In other embodiments, the metal foil has a thickness greater than 100 nm and less than or equal to 10 mm.
    Type: Application
    Filed: November 29, 2022
    Publication date: January 16, 2025
    Inventors: Stephan Lvovich Logunov, Mark Alejandro Quesada
  • Patent number: 12197016
    Abstract: Generally, disclosed herein are various embodiments of bonding agents for use in adhering optical fibers to ferrules within optical connectors, and the methods for use thereof. The various embodiments of bonding agents described herein may provide desirable properties, such as, but not limited to, high adhesion strength and/or improved performance following environmental aging. Various embodiments of the bonding agents disclosed herein may also have other desirable properties for the process of securing an optical fiber within a ferrule, such as, but not limited to, shortened process cycle time. Embodiments herein address these needs by monitoring the change in refractive index of a photocurable bonding agent at the interface between the photocurable bonding agent and a substrate or optical fiber, which is referred to as “back reflectance.” In particular, the methods described herein utilize back reflectance techniques to cure the photocurable material or bonding agent.
    Type: Grant
    Filed: August 3, 2022
    Date of Patent: January 14, 2025
    Assignee: Corning Research & Development Corporation
    Inventors: Xiaole Cheng, Stephan Lvovich Logunov, Dan Trung Nguyen
  • Publication number: 20240377588
    Abstract: Methods and systems for forming a fiber assembly are provided herein. A method comprises removing an excess portion from an end of an optical fiber to form a severed end. The optical fiber defines an optical variation portion that includes an optical pathway defining a varying output characteristic of optical signals depending on a position therealong. When the severed end is formed, the position of the severed end along the optical variation portion defines the output characteristic of optical signals therefrom. The method further includes positioning the optical fiber with the severed end onto a film disposed on a surface of a substrate and placing a fixture thereover. The method further includes applying heat to the film through an opening of the fixture to create a bond between the optical fiber and the surface of the substrate.
    Type: Application
    Filed: July 22, 2024
    Publication date: November 14, 2024
    Inventors: Joel Patrick Carberry, Leonard Charles Dabich, II, Stephan Lvovich Logunov, Mark Alejandro Quesada, Alexander Mikhailovich Streltsov
  • Patent number: 12053839
    Abstract: Disclosed herein are methods of bonding a multi-layer film to a substrate and resulting structures thereof. A method of laser bonding a multi-layer film to a substrate can include forming a film over a first surface of a first substrate that is transmissive to light at a first wavelength. The film may include a reflective layer that is reflective to light at the first wavelength and a refractive layer that is refractive to light at the first wavelength. The method may include irradiating a region of the film using laser radiation passing through the first substrate. A wavelength profile of the laser radiation can have a peak at about the first wavelength. The first wavelength can be between about 300 nm and about 5000 nm.
    Type: Grant
    Filed: May 21, 2019
    Date of Patent: August 6, 2024
    Assignee: CORNING INCORPORATED
    Inventors: Stephan Lvovich Logunov, Mark Alejandro Quesada, Alexander Mikhailovich Streltsov
  • Publication number: 20240255718
    Abstract: Provided are embodiments of an optical fiber ribbon. The optical fiber ribbon includes a plurality of optical fibers arranged adjacently. The plurality of optical fibers are joined intermittently or continuously along their length. Each optical fiber of the plurality of optical fibers has at least one core having a first refractive index, a cladding region having a second refractive index different from the first refractive index, and a third region disposed within the cladding region. The third region has a third refractive index different from the first refractive index and from the second refractive index. The third region of each optical fiber includes a centroid having a true position according to ASME Y14.5-2009 relative to an adjacent optical fiber that is within a diametrical tolerance of 50 ?m. Embodiments of a method and a system for preparing such and optical fiber ribbon are also provided.
    Type: Application
    Filed: April 9, 2024
    Publication date: August 1, 2024
    Inventors: Scott Robertson Bickham, Julie Ann Chalk, David Wesley Chiasson, Stephan Lvovich Logunov
  • Patent number: 12006253
    Abstract: An optical fiber curing component includes a first tube comprising a first body defining a first interior surface and a first exterior surface, the first tube defining a first aperture and a second aperture on opposite ends of a first cavity, wherein the first tube defines a central axis extending through the first cavity; light sources coupled to the first body of the first tube and configured to emit light toward the central axis of the first tube, wherein each of the light sources intersect a common plane defined perpendicular to the central axis of the first tube; a silica glass article, having an anti-reflective coating, disposed between each of the plurality of light sources and the central axis of the first tube; and a reflective coating positioned on the interior surface of the first body and configured to reflect the light toward the central axis of the first tube.
    Type: Grant
    Filed: September 24, 2020
    Date of Patent: June 11, 2024
    Assignee: CORNING INCORPORATED
    Inventors: Dana Craig Bookbinder, Stephan Lvovich Logunov, Darren Andrew Stainer, Pushkar Tandon, Ruchi Tandon
  • Publication number: 20240139886
    Abstract: A method of laser bonding glass ceramic to metal foil includes contacting a first surface of a first glass ceramic substrate with a first surface of a first metal foil to create a first contact location between at least a portion of the first surface of the first glass ceramic substrate and the first surface of the first metal foil; and conducting a first welding step by directing a laser beam on at least a portion of the first contact location to bond the first glass ceramic substrate to the first metal foil and form a first bond location and a package. The first glass ceramic substrate has a thickness greater than or equal to 20 ?m and less than or equal to 250 ?m. The laser beam comprises a pulsed laser comprising a wavelength greater than or equal to 250 nm and less than or equal to 2 ?m.
    Type: Application
    Filed: October 10, 2023
    Publication date: May 2, 2024
    Inventors: Andrey Kobyakov, Stephan Lvovich Logunov
  • Patent number: 11964898
    Abstract: A method of cutting a glass sheet comprising a transparent oxide glass includes directing a laser beam from a middle-infrared (mid-IR) laser source onto a major surface of the glass sheet. A wavelength of the laser beam is tuned thereby adjusting an absorption depth of the laser beam in the glass sheet. The glass sheet is cut using the laser beam.
    Type: Grant
    Filed: May 7, 2019
    Date of Patent: April 23, 2024
    Assignee: CORNING INCORPORATED
    Inventors: Stephan Lvovich Logunov, Alexander Mikhailovich Streltsov
  • Patent number: 11932445
    Abstract: A glass container including a body having a delamination factor less than or equal to 10 and at least one marking is described. The body has an inner surface, an outer surface, and a wall thickness extending between the outer surface and the inner surface. The marking is located within the wall thickness. In particular, the marking is a portion of the body having a refractive index that differs from a refractive index of an unmarked portion of the body. Methods of forming the marking within the body are also described.
    Type: Grant
    Filed: May 1, 2020
    Date of Patent: March 19, 2024
    Assignee: CORNING INCORPORATED
    Inventors: Stephan Lvovich Logunov, Leonard Thomas Masters, William James Miller, Alexander Mikhailovich Streltsov, Christopher Lee Timmons
  • Patent number: 11906771
    Abstract: Embodiments of the disclosure relates to a light-diffusing element. The light diffusing element includes a glass core having a first refractive index. The light diffusing element also includes a cladding surrounding the glass core. The cladding includes an inner cladding surface and an outer cladding surface. The inner cladding surface and the outer cladding surface define a cladding thickness of from 5 ?m to 30 ?m. The cladding has a second refractive index that is less than the first refractive index of the glass core. The light diffusing element also includes a coating surrounding the cladding. The coating has an inner coating surface and an outer coating surface. The inner coating surface contacts the outer cladding surface. The outer coating surface defines an outermost surface of the light-diffusing element, and the coating includes first scattering centers.
    Type: Grant
    Filed: December 9, 2019
    Date of Patent: February 20, 2024
    Assignee: Corning Incorporated
    Inventors: Kevin Wallace Bennett, Stephan Lvovich Logunov
  • Publication number: 20230393310
    Abstract: A device comprising: a first substrate; and a second substrate bonded to the first substrate via an innermost bond, an outermost bond, and bonds between the innermost bond and the outermost bond, the second substrate comprising a through-hole and an axis extending through the through-hole. Each of the bonds has a strength, and the strength of the bonds increases sequentially from the innermost bond to the outermost bond. The strength of each bond is sufficiently low such that the bonds fail in response to liquid (within a cavity defined by the first substrate, a third substrate, and the through-hole of the second substrate) exerting pressure on the first substrate instead of the first substrate failing. Each of the bonds are configured to fail at approximately the same pressure exerted upon the first substrate by the liquid. Additionally disclosed is a method of manufacturing the device.
    Type: Application
    Filed: October 7, 2021
    Publication date: December 7, 2023
    Inventors: Naigeng Chen, Stephan Lvovich Logunov, Weiwei Luo, Mark Alejandro Quesada, Bo Yang
  • Publication number: 20230347622
    Abstract: A bonded article includes a first substrate, a second substrate, and a bonding layer disposed between the first substrate and the second substrate. The bonding layer includes a conducting layer and a capping layer. The first substrate is bonded to the second substrate at a bonded region extending along a bond track. The bonded region is substantially continuous between the first substrate and the second substrate.
    Type: Application
    Filed: November 12, 2020
    Publication date: November 2, 2023
    Inventors: Rocco Lafleur, Stephan Lvovich Logunov, Brian Nilsen, Mark Alejandro Quesada, Thomas Mikio Wynne
  • Publication number: 20230329033
    Abstract: Disclosed herein are sealed devices comprising a first substrate, a second substrate, an inorganic film between the first and second substrates, and at least one weld region comprising a bond between the first and second substrates. The weld region can comprise a chemical composition different from that of the inorganic film and the first or second substrates. The sealed devices may further comprise a stress region encompassing at least the weld region, in which a portion of the device is under a greater stress than the remaining portion of the device. Also disclosed herein are display and electronic components comprising such sealed devices.
    Type: Application
    Filed: June 1, 2023
    Publication date: October 12, 2023
    Inventors: Leonard Charles Dabich, II, Stephan Lvovich Logunov, Mark Alejandro Quesada, Alexander Mikhailovich Streltsov
  • Patent number: 11773016
    Abstract: An apparatus for curing a coating composition disposed on a glass fiber includes a diffuse reflector surrounding a coating composition disposed on a glass fiber. The diffuse reflector defines a cavity having a sidewall extending from a first end to a second end. The first end has a first opening and the second end has a second opening. The glass fiber passes through the cavity from the first opening to the second opening. The sidewall has an interior surface facing the coating composition disposed on the glass fiber. The interior surface includes a scattering material. A light source integrated with the diffuse reflector. The light source directs light to the scattering material. The scattering material diffusely reflects at least 90% of the light. The diffusely reflected light has sufficient intensity to cure the coating composition.
    Type: Grant
    Filed: November 19, 2019
    Date of Patent: October 3, 2023
    Assignee: Corning Incorporated
    Inventors: Martin Hempstead, Stephan Lvovich Logunov
  • Patent number: 11746041
    Abstract: Embodiments of a glass-ceramic, glass-ceramic article or glass-ceramic window that includes 40 mol %?SiO2?80 mol %; 1 mol %?AI2O3?15 mol %; 3 mol %?B2O3?50 mol %; 0 mol %?R2O?15 mol %; 0 mol %?RO?2 mol %; 0 mol %?P2O5?3 mol %; 0 mol %?SnO2?0.5 mol %; 0.1 mol %?MoO3?15 mol %; and 0 mol %?WO3?10 mol % (or 0 mol %<MoO3?15 mol %; 0.1 mol %?WO3?10 mol %; and 0.01 mol %?V2O5?0.2 mol %), wherein the WO3 (mol %) plus the MoO3 (mol %) is from 1 mol % to 19 mol %, and wherein R2O (mol %) minus the AI2O3 (mol %) is from ?12 mol % to 4 mol %, are disclosed.
    Type: Grant
    Filed: December 4, 2018
    Date of Patent: September 5, 2023
    Assignee: Corning Incorporated
    Inventors: Matthew John Dejneka, Stuart Gray, Jesse Kohl, Stephan Lvovich Logunov
  • Patent number: 11726273
    Abstract: Disclosed herein are embodiments of an ultraviolet (UV) illumination system. The UV illumination system includes at least one UV light emitting diode (LED) and a light-diffusing optical fiber bundle. The light-diffusing optical fiber bundle includes a bundle jacket and a plurality of optical fibers disposed within the bundle jacket. Each optical fiber is made up of a glass core having a glass composition with less than 90 mol % silica and a cladding surrounding the glass core. At least one of the glass core or the cladding includes scattering centers. Further, the light-diffusing optical fiber bundle is optically coupled to the UV LED. Also disclosed herein are a UV light-diffusing fiber and a method of sterilizing an object using a UV illumination system contain a UV light-diffusing fiber.
    Type: Grant
    Filed: December 6, 2019
    Date of Patent: August 15, 2023
    Assignee: Corning Incorporated
    Inventor: Stephan Lvovich Logunov