Patents by Inventor Claas Boxhammer

Claas Boxhammer 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: 11801702
    Abstract: A coating composition for producing a heat-sensitive recording material and to a corresponding heat-sensitive recording layer. The coating composition includes one or more color developers, one or more dye precursors, one or more specific fatty acid amides, and one or more (additional) specific sensitizers. A heat-sensitive recording material including a carrier substrate and a heat-sensitive recording layer, to the use of specific fatty acid amides in order to increase the grease resistance of a heat-sensitive recording material or a heat-sensitive recording layer, and to a method for producing a heat-sensitive recording material or a heat-sensitive recording layer.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: October 31, 2023
    Assignee: MITSUBISHI HITEC PAPER EUROPE GMBH
    Inventor: Claas Boxhammer
  • Patent number: 11752793
    Abstract: A heat-sensitive recording material including a substrate, a heat-sensitive recording layer which includes N-(4-methylphenylsulfonyl)-/V-(3-(4-methylphenylsulfonyloxy)pheny-purea and/or N42-(3-phenylureido)phenyl]benzol sulfonamide, and an intermediate layer which is arranged between the substrate and the heat-sensitive recording layer and which includes calcined aluminum silicate, and a method for producing a heat-sensitive recording material and to the use of calcined aluminum silicate in an intermediate layer of a heat-sensitive recording material.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: September 12, 2023
    Assignee: MITSUBISHI HITEC PAPER EUROPE GMBH
    Inventors: Nadia El-Karzazi, Claas Boxhammer
  • Publication number: 20220363924
    Abstract: A description is given of a heat-sensitive recording material, comprising phenol-free organic color developers, more particularly comprising a color developer mixture comprising phenol-free organic color developers, of a heat-sensitive recording layer and also of a coating composition for producing it, of the use of the heat-sensitive recording material, of the use of an organic color developer of a formula I for improving the resistance of the printed image of a heat-sensitive recording material, and of a method for producing heat-sensitive recording material.
    Type: Application
    Filed: September 24, 2020
    Publication date: November 17, 2022
    Inventors: Nora WILKE, Claas BOXHAMMER
  • Patent number: 11365516
    Abstract: A release substrate includes: a carrier substrate having a front side and a reverse side opposite the front side, and a release layer disposed on the front side and/or reverse side of the carrier substrate. The release layer includes a polymeric binder and a wax based on a vegetable oil.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: June 21, 2022
    Assignee: MITSUBISHI HITEC PAPER EUROPE GMBH
    Inventors: Dieter Becker, Nadia El-Karzazi, Konstantinos Kalessios, Jochen Schlegel, Nora Wilke, Claas Boxhammer
  • Publication number: 20220055389
    Abstract: A heat-sensitive recording material having a carrier substrate and a fusible layer disposed on one side of the carrier substrate. The fusible layer comprises an amide wax having a melting point in the range from 60° C. to 180° C., an inorganic pigment, and a polymeric binder.
    Type: Application
    Filed: August 18, 2021
    Publication date: February 24, 2022
    Inventors: Claas BOXHAMMER, Ilyas KABUL, Helga FRAHLING
  • Publication number: 20210031551
    Abstract: A coating composition for producing a heat-sensitive recording material and to a corresponding heat-sensitive recording layer. The coating composition includes one or more color developers, one or more dye precursors, one or more specific fatty acid amides, and one or more (additional) specific sensitizers. A heat-sensitive recording material including a carrier substrate and a heat-sensitive recording layer, to the use of specific fatty acid amides in order to increase the grease resistance of a heat-sensitive recording material or a heat-sensitive recording layer, and to a method for producing a heat-sensitive recording material or a heat-sensitive recording layer.
    Type: Application
    Filed: January 31, 2019
    Publication date: February 4, 2021
    Inventor: Claas BOXHAMMER
  • Patent number: 10882348
    Abstract: A heat-sensitive recording material having i) a supporting substrate and ii) a heat-sensitive recording layer, where the heat-sensitive recording layer comprises a colour former and a colour developer mixture and the colour developer mixture comprises a) N-[2-(3-phenylureido)phenyl]benzenesulfonamide (compound of the formula (I)), where the compound of the formula (I) is in a crystalline form having an absorption band at 3401 ? 20 cm 1 in the IR spectrum, and b) N-(4-methylphenylsulfonyl)-N?-(3-(4-methylphenylsulfonyloxy)phenyl) urea (compound of the formula (II)), where the mass ratio between the compound of the formula (I) and the compound of the formula (II) is 0.5:99.5 to 35:65 or 99.5:0.5 to 65:35.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: January 5, 2021
    Assignee: Mitsubishi HiTec Paper Europe GmbH
    Inventors: Claas Boxhammer, Martin Schreer
  • Patent number: 10850546
    Abstract: A heat-sensitive recording material having i) a carrier substrate and ii) a heat-sensitive recording layer. The heat-sensitive recording layer contains a color former and a color developer mixture and the color developer mixture contains a) N/-[2-(3-phenylureido)phenyl]benzole sulfonamide (compound of formula (I)). The compound of formula (I) is present in a crystalline form, which has an absorption band in the IR spectrum at 3401±20 cm?1, and b) N-(4-methylphenylsulfonyl)-N-(3-(4-methylphenylsulfonyloxy)phenyl)urea (compound of formula (II)).
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: December 1, 2020
    Assignee: Mitsubishi HiTec Paper Europe GmbH
    Inventors: Claas Boxhammer, Martin Schreer
  • Publication number: 20200369062
    Abstract: A heat-sensitive recording material including a substrate, a heat-sensitive recording layer which includes N-(4-methylphenylsulfonyl)-/V-(3-(4-methylphenylsulfonyloxy)pheny-purea and/or N42-(3-phenylureido)phenyl]benzol sulfonamide, and an intermediate layer which is arranged between the substrate and the heat-sensitive recording layer and which includes calcined aluminum silicate, and a method for producing a heat-sensitive recording material and to the use of calcined aluminum silicate in an intermediate layer of a heat-sensitive recording material.
    Type: Application
    Filed: January 31, 2019
    Publication date: November 26, 2020
    Inventors: Nadia EL-KARZAZI, Claas BOXHAMMER
  • Publication number: 20200039270
    Abstract: A heat-sensitive recording material eempri waff-having i) a carrier substrate and ii) a heat-sensitive recording lavcrr-wheKH-fth*. The heat-sensitive recording layer contains a color former and a color developer mixture and the color developer mixture contains a) N-[2 -(3- phenylureido)phenyl]benzole sulfonamide (compound of formula (1)). wherein tlw. The compound of formula (I) is present in a crystalline form, which has an absorption band in the IR spectrum at 3401°cm-1. and b) N-(4-methylphenylsulfonyl)-N-(3-(4- methylphenylsulfonyloxy)phenyl)urea (compound of formula (II)).
    Type: Application
    Filed: September 29, 2017
    Publication date: February 6, 2020
    Inventors: Claas BOXHAMMER, Martin SCHREER
  • Publication number: 20200039271
    Abstract: A heat-sensitive recording material having i) a supporting substrate and ii) a heat-sensitive recording layer, where the heat-sensitive recording layer comprises a colour former and a colour developer mixture and the colour developer mixture comprises a) N-[2-(3-phenylureido)phenyl]benzenesulfonamide (compound of the formula (I)), where the compound of the formula (I) is in a crystalline form having an absorption band at 3401 ? 20 cm 1 in the IR spectrum, and b) N-(4-methylphenylsulfonyl)-N?-(3-(4-methylphenylsulfonyloxy)phenyl) urea (compound of the formula (II)), where the mass ratio between the compound of the formula (I) and the compound of the formula (II) is 0.5:99.5 to 35:65 or 99.5:0.5 to 65:35.
    Type: Application
    Filed: September 29, 2017
    Publication date: February 6, 2020
    Inventors: Claas BOXHAMMER, Martin SCHREER
  • Publication number: 20190194872
    Abstract: A release substrate includes: a carrier substrate having a front side and a reverse side opposite the front side, and a release layer disposed on the front side and/or reverse side of the carrier substrate. The release layer includes a polymeric binder and a wax based on a vegetable oil.
    Type: Application
    Filed: December 20, 2018
    Publication date: June 27, 2019
    Inventors: Dieter Becker, Nadia El-Karzazi, Konstantinos Kalessios, Jochen Schlegel, Nora Wilke, Claas Boxhammer