Patents by Inventor Theodor Doll

Theodor Doll 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: 20230405919
    Abstract: The invention relates to a method for producing a component by means of an additive manufacturing process, wherein the component is entirely or partly produced from a liquid raw material solidifiable by heating, wherein the raw material is dispensed in liquid form into a manufacturing zone and is, by means of computer-controlled, point-by-point targeted light irradiation, heated and solidified by the region of incidence of a light beam of a light beam source relative to the manufacturing zone being altered in a continuous and/or in a step-by-step manner, wherein the light beam is emitted from the light beam source, or from an optical unit influencing the light of the light beam source, with a substantially ring-shaped light intensity profile. The invention furthermore relates to an apparatus for producing a component by means of an additive manufacturing process.
    Type: Application
    Filed: November 23, 2018
    Publication date: December 21, 2023
    Inventors: Jan STIEGHORST, Theodorß DOLL
  • Patent number: 11235164
    Abstract: The invention relates to a shape-adaptive medical implant having at least one actuator, which the implant can be changed from a first implant geometry to a second implant geometry, the implant having a different geometric shape in the second implant geometry from that in the first implant geometry, wherein the actuator has a swellable chemical substance which swells when supplied with liquid, and wherein the implant which is designed to supply liquid present outside the implant to the swellable chemical substance. The invention also relates to the use of an electrical signal source.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: February 1, 2022
    Assignee: MEDIZINISCHE HOCHSCHULE HANNOVER
    Inventors: Jan Stieghorst, Theodor Doll
  • Publication number: 20200324124
    Abstract: The invention relates to a shape-adaptive medical implant having at least one actuator, by means of which the implant can be changed from a first implant geometry to a second implant geometry, the implant having a different geometric shape in the second implant geometry from that in the first implant geometry, wherein the actuator has a swellable chemical substance which swells when supplied with liquid, and wherein the implant has at least one liquid transport means, which is designed to supply liquid present outside the implant to the swellable chemical substance. The invention also relates to the use of an electrical signal source.
    Type: Application
    Filed: May 30, 2017
    Publication date: October 15, 2020
    Inventors: Jan STIEGHORST, Theodor DOLL
  • Patent number: 10792854
    Abstract: The invention relates to a method for manufacturing a component (10) by a generative manufacturing process, wherein the component is entirely or partially produced from a liquid raw material (12), characterised in that the component is entirely or partially produced from a liquid raw material (12) that can solidify when heated, the raw material is discharged in liquid form into a manufacturing zone (1) and heated and hence solidified by a computer-controlled, targeted light spot, in that the point of incidence of a light beam (8) from a light beam source is continuously and/or gradually modified relative to the manufacturing zone (1).
    Type: Grant
    Filed: July 17, 2015
    Date of Patent: October 6, 2020
    Assignee: MEDIZINISCHE HOCHSCHULE HANNOVER
    Inventors: Jan Stieghorst, Theodor Doll
  • Publication number: 20170203509
    Abstract: The invention relates to a method for manufacturing a component (10) by a generative manufacturing process, wherein the component is entirely or partially produced from a liquid raw material (12), characterised in that the component is entirely or partially produced from a liquid raw material (12) that can solidify when heated, the raw material is discharged in liquid form into a manufacturing zone (1) and heated and hence solidified by a computer-controlled, targeted light spot, in that the point of incidence of a light beam (8) from a light beam source is continuously and/or gradually modified relative to the manufacturing zone (1).
    Type: Application
    Filed: July 17, 2015
    Publication date: July 20, 2017
    Applicant: MEDIZINISCHE HOCHSCHULE HANNOVER
    Inventors: Jan STIEGHORST, Theodor DOLL
  • Patent number: 9528948
    Abstract: A method includes directing a broadband X-ray emission along a predetermined fixed detection line across a direction of travel of an object and detecting the X-rays at several sampling positions of the object relative to the detection line. Sensors making up the detection line simultaneously detect a first partial image for a first spectral segment of the X-ray and a second partial image for a second spectral segment or the entire spectrum of the X-ray. In order to generate the relevant partial image data, a value of the radiation energy in the relevant spectral segment is determined at each detection position associated with a partial image. The partial image data of the first and second image are arithmetically combined into a partial output image, and the partial output images of all sampling positions are combined into one output image.
    Type: Grant
    Filed: September 25, 2012
    Date of Patent: December 27, 2016
    Assignee: Wipotec Wiege- und Positioniersysteme GmbH
    Inventors: Kai Mark Lüghausen, Theodor Doll
  • Publication number: 20140328463
    Abstract: A method includes directing a broadband X-ray emission along a predetermined fixed detection line across a direction of travel of an object and detecting the X-rays at several sampling positions of the object relative to the detection line. Sensors making up the detection line simultaneously detect a first partial image for a first spectral segment of the X-ray and a second partial image for a second spectral segment or the entire spectrum of the X-ray. In order to generate the relevant partial image data, a value of the radiation energy in the relevant spectral segment is determined at each detection position associated with a partial image. The partial image data of the first and second image are arithmetically combined into a partial output image, and the partial output images of all sampling positions are combined into one output image.
    Type: Application
    Filed: September 25, 2012
    Publication date: November 6, 2014
    Inventors: Kai Mark Lüghausen, Theodor Doll
  • Patent number: 8012791
    Abstract: The invention relates to a method for producing electronic components comprising adjacent electrodes interspaced at distances ranging between 10 nanometers and several micrometers on a substrate of any type. According to the invention, the electrodes are structured by means of overlapping edges on the deposited layer or by undercutting the deposited layers. The electronic components are then produced either in the conventional manner or using a lithographic process from the underside of the transparent substrate and finally by means of a succession of known method steps for the production of electronic components.
    Type: Grant
    Filed: September 1, 2004
    Date of Patent: September 6, 2011
    Assignee: Cantrele Telecom Co., L.L.C.
    Inventors: Theodor Doll, Susanne Scheinert, Axel Scherer, Gernot Paasch
  • Publication number: 20070087468
    Abstract: The invention relates to a method for producing electronic components comprising adjacent electrodes interspaced at distances ranging between 10 nanometers and several micrometers on a substrate of any type. According to the invention, the electrodes are structured by means of overlapping edges on the deposited layer or by undercutting the deposited layers. The electronic components are then produced either in the conventional manner or using a lithographic process from the underside of the transparent substrate and finally by means of a succession of known method steps for the production of electronic components.
    Type: Application
    Filed: September 1, 2004
    Publication date: April 19, 2007
    Inventors: Theodor Doll, Susanne Scheinert, Axel Scherer, Gernot Paasch
  • Publication number: 20050235735
    Abstract: A gas sensor includes a semiconductor substrate on which is disposed at least one field electrode, and advantageously a plurality of field electrodes. The field electrodes are disposed under a gas-sensitive semiconductor resistive film, with an insulator layer in between. The film, which may be in electrical contact with a pair of external electrodes, may comprise a metal oxide, such as for example SnO2, WO3, In2O3, Ga2O3, Cr2-xTixO3+z, or various organic semiconductors. The field electrodes produce an electric field acting on the semiconductor, and an electroadsorptive effect may occur when the thickness of the gas-sensitive film is on the order of the Debye length. In the case of the known gas-sensitive material SnO2, for example, the Debye length may be approximately 60 to 80 nm. An electric field produced in the body of the gas sensor may be effective up to the surface of the gas-sensitive film that is exposed to the gas, i.e., the films lying above the gate electrode do not screen the electric field.
    Type: Application
    Filed: March 12, 2003
    Publication date: October 27, 2005
    Inventors: Theodor Doll, Harald Botner, Jurgen Wollenstein, Martin Jagle, Mirko Lehmann
  • Patent number: 6468823
    Abstract: A broad class of devices, both active and passive, such as waveguides, microcavities, filters, resonators, lasers, switches, modulators, etc. can be fabricated using the disclosed method. The method is one in which nanocavities in semiconductor membranes can be fabricated, which method is an advantage regardless of the type of device which is ultimately being fabricated therefrom. The method of the invention is illustrated in the case of a photonic crystals waveguide as being made in a silicon-on-insulator (SOI) material. However, the method is not limited to this type of material and can be used in other equivalent material structures such as AlGaAs, InGaAsP, or the like. The semiconductor membranes which are fabricated incorporate two dimensional photonic crystals for confinement of light in the lateral or in-plane direction and total internal reflection for the confinement in vertical direction.
    Type: Grant
    Filed: September 29, 2000
    Date of Patent: October 22, 2002
    Assignee: California Institute of Technology
    Inventors: Axel Scherer, Marko Loncar, Theodor Doll