Patents by Inventor Kurt Nattermann

Kurt Nattermann 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).

  • Publication number: 20210269350
    Abstract: The present disclosure relates to a method for at least section-wise separating a glass element into at least two glass sub-elements along a separation face and a glass sub-element which is manufactured and/or can be manufactured in particular by the method according to the disclosure.
    Type: Application
    Filed: March 1, 2021
    Publication date: September 2, 2021
    Inventors: David Sohr, Clemens Kunisch, Kurt Nattermann
  • Publication number: 20210149090
    Abstract: The present disclosure relates to a layered optical composite, in particular for use in an augmented reality device. In particular, the disclosure relates to a layered optical composite and a process for its preparation, a device comprising the layered optical composite and a process for its preparation, and the use of a layered optical composite in an augmented reality device. The present disclosure relates to a layered optical composite comprising: a. a substrate having a front face and a back face, b. a coating comprising: i. a type T layer, and ii. a type C region comprising one or more type C layers; in which the substrate has: i. a thickness tG in the range from 0.2 to 1.2 mm; ii. a refractive index nG at a wavelength ? in the range from 1.6 to 2.4; and iii. an optical absorption coefficient KG at the wavelength ? of less than 10 cm?1; in which the type C layers individually and independently have: i. a thickness tC in the range from 9 to 250 nm; ii.
    Type: Application
    Filed: September 28, 2020
    Publication date: May 20, 2021
    Applicant: SCHOTT AG
    Inventors: Kurt Nattermann, Jens Ulrich Thomas, Frank-Thomas Lentes, Thorsten Damm, Peter Naß
  • Publication number: 20200376603
    Abstract: A method for preparing a workpiece for separation is provided that includes providing a workpiece that is transparent for light of a pulsed laser beam, splitting the laser beam into two partial beams using an optical system, directing both partial beams onto the workpiece, and moving the workpiece and the partial beams relative to one another. The partial beams are directed onto the workpiece incident at different angles to the normal of the irradiated surface and superimposed inside the workpiece such that the partial beams interfere with one another to form a sequence of intensity maxima inside the workpiece. The intensity at the intensity maxima is sufficiently high to modify the material of the workpiece so that a chain-like periodic pattern of material modifications is formed along a path defining a separation line.
    Type: Application
    Filed: August 17, 2020
    Publication date: December 3, 2020
    Applicant: SCHOTT AG
    Inventors: Andreas ORTNER, Clemens KUNISCH, Frank-Thomas LENTES, Jens Ulrich THOMAS, Kurt NATTERMANN, Michael KLUGE
  • Patent number: 10730792
    Abstract: A glass ribbon in the form of a glass roll is provided that is optimized with respect to the requirements of a long service life and at the same time compact dimensions. A bending radius on the inner side of the thin glass roll is determined by performing breakage tests on samples of the glass material, statistical parameters are determined on the basis of the breakage tests, and the statistical parameters are converted into a range of bending radii which meet the requirements on service life and the most compact dimensions possible of the thin glass roll.
    Type: Grant
    Filed: March 10, 2017
    Date of Patent: August 4, 2020
    Assignee: SCHOTT AG
    Inventors: Clemens Ottermann, Rainer Liebald, Andreas Habeck, Kurt Nattermann, Markus Heiss-Chouquet, Jürgen Vogt, Thomas Wiegel, Andreas Ortner, Ning Da, Feng He, Pengxiang Qian
  • Publication number: 20200041804
    Abstract: An optical layered composite includes: a substrate having a front face, a back face, a thickness ds between the front face and the back face and a refractive index ns; and a coating applied to the front face. The coating comprises one or more coating layers. For at least one wavelength ?g in the range from 390 nm to 700 nm, the coating satisfies one of the following criterion: nc<ns; or nc>ns, and d c < k n c 2 - n s 2 · arctan ? n s 2 - 1 n c 2 - n s 2 ; nc is a mean refractive index of the coating layers, weighted by thickness; do is a total thickness of the coating; thicknesses are determined in a direction perpendicular to the front face; and k=?g/4?.
    Type: Application
    Filed: August 1, 2019
    Publication date: February 6, 2020
    Applicant: Schott AG
    Inventors: Jens Ulrich Thomas, Thorsten Damm, Frank-Thomas Lentes, Kurt Nattermann
  • Patent number: 10416055
    Abstract: An improved measurement method and a corresponding measurement device are provided that measure the edge strength of plate-shaped elements made of brittle-fracture material. For this purpose, a long sample is drawn apart at the short edges, wherein the force transmission points lie next to the center of gravity of the base surface of the sample.
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: September 17, 2019
    Assignee: SCHOTT AG
    Inventors: Markus Heiss-Chouquet, Kurt Nattermann, Clemens Ottermann
  • Patent number: 9908730
    Abstract: A method for processing a thin glass is provided. The thin glass is subjected to a tensile stress ?app smaller than 1.15 · Min ? ( ? _ a - ? a ? 0.4 · ( 1 - ln ? ( A ref A App ? ? ) ) , ? ? _ e - ? e ? 0.4 · ( 1 - ln ? ( L ref L App ? ? ) ) ) , wherein ?a is a mean value of tensile stress at break for fractures in a surface of samples of the thin glass under bending stress, wherein ?a is a mean value of tensile stress at break for fractures emanating from an edge of the samples, wherein Lref is an edge length and Aref is a surface area of the samples, wherein ?e and ?a denote standard deviations of the mean values ?e and ?a, respectively, and wherein Aapp is a surface area of the thin glass, Lapp is a summated edge length of opposite edges of the thin glass, and ? is a predefined maximum fracture rate within a period of time of at least half a year.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: March 6, 2018
    Assignee: SCHOTT AG
    Inventors: Andreas Ortner, Clemens Ottermann, Kurt Nattermann, Markus Heiss-Chouquet, Rainer Liebald
  • Patent number: 9784655
    Abstract: A method and an apparatus for examining the fracture strength of flat samples made of brittle-fracture material are provided. The margin of the respective sample is subjected to tensile stress by bending the material in a circular arc shape.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: October 10, 2017
    Assignee: SCHOTT AG
    Inventors: Markus Heiss-Chouquet, Kurt Nattermann, Clemens Ottermann, Matthias Jotz
  • Publication number: 20170183258
    Abstract: A glass ribbon in the form of a glass roll is provided that is optimized with respect to the requirements of a long service life and at the same time compact dimensions. A bending radius on the inner side of the thin glass roll is determined by performing breakage tests on samples of the glass material, statistical parameters are determined on the basis of the breakage tests, and the statistical parameters are converted into a range of bending radii which meet the requirements on service life and the most compact dimensions possible of the thin glass roll.
    Type: Application
    Filed: March 10, 2017
    Publication date: June 29, 2017
    Applicant: SCHOTT AG
    Inventors: Clemens OTTERMANN, Rainer LIEBALD, Andreas HABECK, Kurt NATTERMANN, Markus HEISS-CHOUQUET, Jürgen VOGT, Thomas WIEGEL, Andreas ORTNER, Ning DA, Feng HE, Pengxiang QIAN
  • Publication number: 20170167960
    Abstract: An improved measurement method and a corresponding measurement device are provided that measure the edge strength of plate-shaped elements made of brittle-fracture material. For this purpose, a long sample is drawn apart at the short edges, wherein the force transmission points lie next to the center of gravity of the base surface of the sample.
    Type: Application
    Filed: February 28, 2017
    Publication date: June 15, 2017
    Applicant: SCHOTT AG
    Inventors: Markus Heiss-Chouquet, Kurt Nattermann, Clemens Ottermann
  • Patent number: 9664603
    Abstract: An improved measurement method and a corresponding measurement device are provided that measure the edge strength of plate-shaped elements made of brittle-fracture material. For this purpose, a long sample is drawn apart at the short edges, wherein the force transmission points lie next to the center of gravity of the base surface of the sample.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: May 30, 2017
    Assignee: SCHOTT AG
    Inventors: Markus Heiss-Chouquet, Kurt Nattermann, Clemens Ottermann
  • Publication number: 20170096364
    Abstract: A long-term bendable glass material includes a glass material having a bending radius in a range of 1 mm to 107 mm. The glass material is structured such that a number of breaks developing over a course of time after a storage period of at least one day displays a remaining probability of breaking of less than 0.1 for a storage time period of a maximum of half a year.
    Type: Application
    Filed: October 3, 2016
    Publication date: April 6, 2017
    Applicant: Schott AG
    Inventors: Clemens Ottermann, Kurt Nattermann, Markus Heiß-Chouquet, Jürgen Vogt, Thomas Roßmeier, Andreas Habeck
  • Publication number: 20160207726
    Abstract: A method for processing a thin glass is provided. The thin glass is subjected to a tensile stress ?app smaller than 1.15 · Min ? ( ? _ a - ? a ? 0.4 · ( 1 - ln ? ( A ref A App ? ? ) ) , ? ? _ e - ? e ? 0.4 · ( 1 - ln ? ( L ref L App ? ? ) ) ) , wherein ?a is a mean value of tensile stress at break for fractures in a surface of samples of the thin glass under bending stress, wherein ?a is a mean value of tensile stress at break for fractures emanating from an edge of the samples, wherein Lref is an edge length and Aref is a surface area of the samples, wherein ?e and ?a denote standard deviations of the mean values ?e and ?a, respectively, and wherein Aapp is a surface area of the thin glass, Lapp is a summated edge length of opposite edges of the thin glass, and ? is a predefined maximum fracture rate within a period of time of at least half a year.
    Type: Application
    Filed: March 30, 2016
    Publication date: July 21, 2016
    Applicant: SCHOTT AG
    Inventors: Andreas ORTNER, Clemens OTTERMANN, Kurt NATTERMANN, Markus HEISS-CHOUQUET, Rainer LIEBALD
  • Publication number: 20160033380
    Abstract: An improved measurement method and a corresponding measurement device are provided that measure the edge strength of plate-shaped elements made of brittle-fracture material. For this purpose, a long sample is drawn apart at the short edges, wherein the force transmission points lie next to the center of gravity of the base surface of the sample.
    Type: Application
    Filed: July 31, 2015
    Publication date: February 4, 2016
    Inventors: Markus Heiss-Chouquet, Kurt Nattermann, Clemens Ottermann
  • Publication number: 20160033379
    Abstract: A method and an apparatus for examining the fracture strength of flat samples made of brittle-fracture material are provided. The margin of the respective sample is subjected to tensile stress by bending the material in a circular arc shape.
    Type: Application
    Filed: July 31, 2015
    Publication date: February 4, 2016
    Inventors: Markus Heiss-Chouquet, Kurt Nattermann, Clemens Ottermann, Matthias Jotz
  • Patent number: 9018565
    Abstract: An apparatus for producing holes in dielectric workpieces in the form of thin sheets and substrates, in particular of glass or glass-like materials and semiconductors is provided. The apparatus includes individual high-voltage electrodes that are symmetrically arranged on an electrode holder around the hole to be produced in the workpiece. The apparatus also includes individual counter electrodes that are arranged on a counter electrode holder. The electrodes and counter electrodes can be connected in a permutating manner to a high-voltage source for the discharge of high-voltage flashovers.
    Type: Grant
    Filed: July 4, 2011
    Date of Patent: April 28, 2015
    Assignee: Schott AG
    Inventors: Kurt Nattermann, Ulrich Peuchert, Wolfgang Moehl, Stephan Behle, Dirk Weidmann, Sabine Lehnicke
  • Publication number: 20130340480
    Abstract: A method for producing perforated work pieces from glass, glass ceramics, or semiconductors in a stress-relieving manner is provided. The method includes heating the work piece up to the glass transition temperature and perforating the work piece using a high-voltage electric field of suitable frequency or pulse shape. Then, the perforated work piece is allowed to cool down from the transition temperature range to room temperature at a rate at which the mechanical stresses generated by the perforation process relax.
    Type: Application
    Filed: June 4, 2011
    Publication date: December 26, 2013
    Applicant: SCHOTT AG
    Inventors: Kurt Nattermann, Ulrich Peuchert
  • Publication number: 20130213467
    Abstract: A method and apparatus for producing a multiplicity of holes in thin sheet-like workpieces of dielectric material or semiconductors is provided. The perforation points are marked by HF coupling points and caused to soften using HF energy in order to obtain dielectric breakdowns. The breakdowns are then widened into holes.
    Type: Application
    Filed: July 4, 2011
    Publication date: August 22, 2013
    Applicant: Schott AG
    Inventors: Kurt Nattermann, Ulrich Peuchert, Wolfgang Moehl
  • Publication number: 20130206724
    Abstract: An apparatus for producing holes in dielectric workpieces in the form of thin sheets and substrates, in particular of glass or glass-like materials and semiconductors is provided. The apparatus includes individual high-voltage electrodes that are symmetrically arranged on an electrode holder around the hole to be produced in the workpiece. The apparatus also includes individual counter electrodes that are arranged on a counter electrode holder. The electrodes and counter electrodes can be connected in a permutating manner to a high-voltage source for the discharge of high-voltage flashovers.
    Type: Application
    Filed: July 4, 2011
    Publication date: August 15, 2013
    Applicant: SCHOTT AG
    Inventors: Kurt Nattermann, Ulrich Peuchert, Wolfgang Moehl, Stephan Behle, Dirk Weidmann, Sabine Lehnicke
  • Publication number: 20130209731
    Abstract: Methods and apparatuses for producing a multiplicity of holes in thin workpieces made of glass or glass-like materials and semiconductors are provided. The method includes directing multiple laser beams onto predetermined perforation points of the workpiece in a wavelength range between 1600 and 200 nm and with a radiation intensity that causes local non-thermal destruction of the workpiece material along respective filamentary channels. Subsequently, the filamentary channels are widened to the desired diameter of the holes.
    Type: Application
    Filed: July 4, 2011
    Publication date: August 15, 2013
    Applicant: SCHOTT AG
    Inventors: Kurt Nattermann, Ulrich Peuchert, Wolfgang Moehl, Stephan Behle