Patents by Inventor Hendrik John

Hendrik John 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: 12605236
    Abstract: A method of producing a dental restoration (100), including the steps of calculating (S101) a pressure distribution (101) on the oral mucosa (105) through the dental restoration (100) based on a three-dimensional data set (103-DS) of the dental restoration (100) and a three-dimensional data set (103-MS) of the oral mucosa (105); and determining (S102) a spatial region (107) for an elastic production material (109) within the dental restoration (100) based on the calculated pressure distribution (101).
    Type: Grant
    Filed: November 27, 2023
    Date of Patent: April 21, 2026
    Assignee: Ivoclar Vivadent AG
    Inventors: Eser Atilim, Hendrik John
  • Patent number: 12593910
    Abstract: A method for producing a mouthpiece toothbrush is provided, in which at least one dental arch of the patient for whom the toothbrush is intended is scanned to generate scan data, or an impression of the dental arch is made. Based on the scan data or the then digitised impression, the dental arch space occupied by the dental arch is recorded. A bristle space is constructed around the at least one dental arch, and a toothbrush moulded piece is calculated, the surface of which facing the dental arch is determined by the dental arch space plus the bristle space. The surface is covered with a bristle carpet.
    Type: Grant
    Filed: April 1, 2022
    Date of Patent: April 7, 2026
    Assignee: Ivoclar Vivadent AG
    Inventors: Hendrik John, Christian Niedrig, Theresa Sujata Maria Senti, Martina Hauner-Westphal, Tatiana Glebova
  • Patent number: 12544199
    Abstract: A manufacturing method for a dental object, including the steps of generating (S101) a digital dental object in a coordinate system describing a shape of the dental object to be manufactured; rotating (S102) the spatial orientation of the digital dental object in the coordinate system based on a digital reference object in the coordinate system; and manufacturing (S103) the dental object based on the digital dental object with the rotated spatial orientation.
    Type: Grant
    Filed: March 30, 2023
    Date of Patent: February 10, 2026
    Assignee: Ivoclar Vivadent AG
    Inventors: Alen Frey, Hendrik John, Andreas Schülke, Katja Hönow
  • Patent number: 12509400
    Abstract: A method for layer-wise additive manufacturing of a shaped body made up of slices of processed layers, including the steps: creating a layer of a slurry, the slurry including binder, a dispersing medium and a particulate filler material, solidifying the slurry layer, directing electromagnetic radiation to the solidified layer for processing it by debinding and/or sintering, and repeating the above-mentioned steps to successively build the shaped body. A laser induced forward transfer (LIFT) process utilizing a laser to direct laser beam pulses acts on a coating of slurry on a carrier to transfer droplets of slurry to a receptor surface to create the slurry layer which is then processed further by above-mentioned steps of solidifying, and debinding and/or sintering.
    Type: Grant
    Filed: September 23, 2019
    Date of Patent: December 30, 2025
    Assignees: Ivoclar Vivadent AG, IO Tech Group Ltd.
    Inventors: Hendrik John, Michael Zenou, Christian Ritzberger
  • Publication number: 20250387208
    Abstract: A method for determining an internal structure of a dental prosthesis base having at least one blood vessel simulation. The method includes obtaining outer shell data which describe an outer shell of the dental prosthesis base. The method includes obtaining blood vessel data which describe the at least one blood vessel simulation. The method includes combining the outer shell data and the blood vessel data to form internal structure data, wherein the internal structure data describe an arrangement of the at least one blood vessel simulation within the outer shell of the dental prosthesis base. A method for the production of a dental prosthesis base is included. A dental prosthesis base with an outer shell and an internal structure is included, using the method herein. A data-processing device, a computer program and a computer-readable medium are also presented.
    Type: Application
    Filed: June 24, 2025
    Publication date: December 25, 2025
    Inventors: Hendrik John, Mathias Vetsch
  • Publication number: 20250170750
    Abstract: A method of producing a dental restoration by jet-printing, comprising the steps of jet-printing (S101) one or more layers of the dental restoration by means of a ceramic slurry; and jet-printing (S102) a translucency enhancer or opacity enhancer onto the one or more layers.
    Type: Application
    Filed: November 19, 2024
    Publication date: May 29, 2025
    Inventors: Hendrik JOHN, Frank ROTHBRUST, Sebastian KROLIKOWSKI, Christian RITZBERGER
  • Publication number: 20250169929
    Abstract: A method of producing a dental restoration by jet-printing, including jet-printing one or more layers of a dental restoration using a ceramic slurry, jet-printing a coloring solution onto the one or more layers, and applying a fixing solution for fixing the coloring solution.
    Type: Application
    Filed: November 19, 2024
    Publication date: May 29, 2025
    Inventors: Hendrik JOHN, Frank ROTHBRUST, Sebastian KROLIKOWSKI, Christian RITZBERGER
  • Publication number: 20250170648
    Abstract: A method of producing a dental restoration (100) by jet printing, including the steps of jet printing (S101) one or more layers of the dental restoration using a ceramic slurry; and jet printing (S102) a coloring solution onto the one or more layers.
    Type: Application
    Filed: November 19, 2024
    Publication date: May 29, 2025
    Inventors: Hendrik JOHN, Frank ROTHBRUST, Sebastian KROLIKOWSKI, Christian RITZBERGER
  • Publication number: 20250171364
    Abstract: A method of producing a dental restoration by jet-printing, including the steps of jet-printing (S101) a dentin core of the dental restoration using a plurality of opaque ceramic slurries having different colors from each other; and jet-printing (S102) the tooth enamel of the dental restoration using a translucent ceramic slurry.
    Type: Application
    Filed: November 19, 2024
    Publication date: May 29, 2025
    Inventors: Hendrik JOHN, Frank ROTHBRUST, Sebastian KROLIKOWSKI, Christian RITZBERGER
  • Publication number: 20250134633
    Abstract: A method for determining an internal structure of a dental prosthesis base. The method includes obtaining outer shell data of the dental prosthesis base. Gum ridge line data are obtained. A first reference line is defined by parallel displacement of the gum ridge line or the gum ridge line is defined as a first reference line. A first reference point is defined which lies above or below the dental prosthesis base. A first separation surface is defined as a surface which comprises all straight lines which extend through the first reference point and through the first reference line. At least one sub-volume of the dental prosthesis base is deduced as volume delimited by the first separation surface and the outer shell. A dental prosthesis base is presented. A data-processing device, a computer program and a computer-readable medium are also described.
    Type: Application
    Filed: October 22, 2024
    Publication date: May 1, 2025
    Inventor: Hendrik JOHN
  • Publication number: 20240399667
    Abstract: A printing method for producing a component, including the steps of calculating an energy input for a spatial region of the component on the basis of the optical parameters of a light-curable material; and curing the region of the component by light which generates the calculated energy input into the material.
    Type: Application
    Filed: May 28, 2024
    Publication date: December 5, 2024
    Inventors: Hendrik John, Christian Niedrig, Lorenz Bonderer
  • Publication number: 20240326336
    Abstract: A method for printing a three-dimensional component (101), including the steps of heating (S101) a build platform to melt a material component to form a sliding film between the component and the build platform; and removing (S102) the component (101) from the build platform.
    Type: Application
    Filed: March 28, 2024
    Publication date: October 3, 2024
    Inventor: Hendrik John
  • Publication number: 20240299144
    Abstract: A method of producing a dental restoration (100), including the steps of calculating (S101) a pressure distribution (101) on the oral mucosa (105) through the dental restoration (100) based on a three-dimensional data set (103-DS) of the dental restoration (100) and a three-dimensional data set (103-MS) of the oral mucosa (105); and determining (S102) a spatial region (107) for an elastic production material (109) within the dental restoration (100) based on the calculated pressure distribution (101).
    Type: Application
    Filed: November 27, 2023
    Publication date: September 12, 2024
    Inventors: Eser Atilim, Hendrik John
  • Publication number: 20240268546
    Abstract: A method of producing a dental arch toothbrush (100), including the steps of detecting (S101) a dental arch shape (101) of a patient; and milling (S102) the dental arch shape (101) out of a disk (103) in which the bristles (105) of the dental arch toothbrush (100) are embedded.
    Type: Application
    Filed: February 8, 2024
    Publication date: August 15, 2024
    Inventors: Marvin Kuhn, Andreas Schülke, Hendrik John, Urs Lendenmann
  • Patent number: 12045984
    Abstract: The present invention relates to a method for comparing three-dimensional dental structures, comprising the steps of acquiring (S101) a target data set representing the shape and optical properties of a natural tooth; rendering (S102) a digital tooth model (200) to generate an actual data set representing the shape and optical properties of the digital tooth model; determining (S104) a first comparison value from the actual data set; determining (S105) a second comparison value from the target data set; and determining (S106) a deviation based on the first and second comparison values.
    Type: Grant
    Filed: September 15, 2021
    Date of Patent: July 23, 2024
    Assignee: Ivoclar Vivadent AG
    Inventors: Rudolf Jussel, Christian Niedrig, Hendrik John
  • Publication number: 20240173108
    Abstract: A method of producing a dental restoration, including the steps of determining (S101) a first spatial region of the dental restoration that is subject to a higher load than a second spatial region of the dental restoration; and producing (S102) the dental restoration in the first spatial region with a different production material than in the second spatial region.
    Type: Application
    Filed: November 27, 2023
    Publication date: May 30, 2024
    Inventors: Eser Atilim, Hendrik John
  • Publication number: 20240025122
    Abstract: A method for arranging support structures for an additive manufacturing process on a dental restoration, comprising the steps of detecting (S101) a flash line in a digital model of the dental restoration; and adding (S102) support structures to the digital model for supporting the dental restoration in the additive manufacturing process along the flash line.
    Type: Application
    Filed: July 19, 2023
    Publication date: January 25, 2024
    Inventors: Alexander SCHÖCH, Hendrik JOHN
  • Patent number: 11790529
    Abstract: The present invention relates to a method for fabricating a dental restoration, comprising the steps of rendering (S101) a first digital tooth model with a first material combination for generating a first actual data set representing the optical properties of the first digital tooth model; determining (S102) a first deviation between a target data set and the first actual data set; rendering (S103) a second digital tooth model based on a second combination of materials to generate a second actual data set representing the optical properties of the second digital tooth model; determining (S104) a second deviation between the target data set and the second actual data set; and fabricating (S105) the dental restoration based on the first digital tooth model when the first deviation is less than the second deviation and fabricating the dental restoration based on the second digital tooth model when the second deviation is less than the first deviation.
    Type: Grant
    Filed: September 15, 2021
    Date of Patent: October 17, 2023
    Assignee: Ivoclar Vivadent AG
    Inventors: Gottfried Rohner, Hendrik John, Rudolf Jussel, Christian Niedrig
  • Publication number: 20230310128
    Abstract: A manufacturing method for a dental object, including the steps of generating (S101) a digital dental object in a coordinate system describing a shape of the dental object to be manufactured; rotating (S102) the spatial orientation of the digital dental object in the coordinate system based on a digital reference object in the coordinate system; and manufacturing (S103) the dental object based on the digital dental object with the rotated spatial orientation.
    Type: Application
    Filed: March 30, 2023
    Publication date: October 5, 2023
    Inventors: Alen Frey, Hendrik John, Andreas Schülke, Katja Hönow
  • Publication number: 20230316719
    Abstract: A recognition method for a dental object, including the steps of providing (S101) a digital dental object in a coordinate system describing a shape of the dental object to be manufactured; and automatically assigning (S102) the digital dental object to a predetermined class based on the shape by a self-learning algorithm.
    Type: Application
    Filed: March 30, 2023
    Publication date: October 5, 2023
    Inventors: Alen Frey, Marius Aster, Hendrik John