Patents by Inventor Juergen Leppert

Juergen Leppert 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: 9938458
    Abstract: A method is for the production of a scintillator fiber. In an embodiment, the method includes provisioning a suspension of a binder dissolved in a solvent and a scintillator material; and pressing the suspension into a precipitation bath in which the binder is insoluble.
    Type: Grant
    Filed: April 20, 2017
    Date of Patent: April 10, 2018
    Assignee: SIEMENS HEALTHCARE GMBH
    Inventors: Cansu Bilgin, Juergen Leppert, Christian Schroeter, Stefan Wirth
  • Publication number: 20170313938
    Abstract: A method is for the production of a scintillator fiber. In an embodiment, the method includes provisioning a suspension of a binder dissolved in a solvent and a scintillator material; and pressing the suspension into a precipitation bath in which the binder is insoluble.
    Type: Application
    Filed: April 20, 2017
    Publication date: November 2, 2017
    Applicant: Siemens Healthcare GmbH
    Inventors: Cansu BILGIN, Juergen LEPPERT, Christian SCHROETER, Stefan WIRTH
  • Patent number: 8350224
    Abstract: A scintillator arrangement for detecting X-ray radiation includes a plurality of pixels separated from one another by reflectors and made of a scintillator ceramic, doped in particular by cerium, for converting the X-ray radiation into visible light. In at least one embodiment, the reflectors are designed for absorbing light with a wavelength range which corresponds to a selected emission band of the scintillator ceramic. Thus, the concentration of cerium in the scintillator ceramic can be reduced and this leads to an increased light yield.
    Type: Grant
    Filed: February 16, 2010
    Date of Patent: January 8, 2013
    Assignee: Siemens Aktiengesellschaft
    Inventor: Jürgen Leppert
  • Publication number: 20100232568
    Abstract: An X-ray or gamma ray detector array is disclosed, with at least one row of detector elements including at least one layer made of an X-ray or gamma radiation absorbing conversion material. In at least one embodiment, the conversion material is at least in part composed of a chemical element with an atomic number ?72, preferably >82. Such an X-ray or gamma ray detector array allows an increased spatial and spectral resolution and better dose usage.
    Type: Application
    Filed: March 12, 2010
    Publication date: September 16, 2010
    Inventors: Björn HEISMANN, Jürgen LEPPERT
  • Publication number: 20100207031
    Abstract: A scintillator arrangement for detecting X-ray radiation includes a plurality of pixels separated from one another by reflectors and made of a scintillator ceramic, doped in particular by cerium, for converting the X-ray radiation into visible light. In at least one embodiment, the reflectors are designed for absorbing light with a wavelength range which corresponds to a selected emission band of the scintillator ceramic. Thus, the concentration of cerium in the scintillator ceramic can be reduced and this leads to an increased light yield.
    Type: Application
    Filed: February 16, 2010
    Publication date: August 19, 2010
    Inventor: Jürgen Leppert
  • Patent number: 7415098
    Abstract: A collimator is disclosed for stray radiation, in particular for medical X-ray devices. In addition, a method is disclosed for producing the collimator. The collimator includes numerous absorption elements for X-ray radiation which are separated from one another by a filler and support material and are aligned approximately in parallel or oriented towards a common focus. In the collimator, the absorption elements are statistically distributed. A collimator of this type is extremely cost-effective to produce.
    Type: Grant
    Filed: November 11, 2004
    Date of Patent: August 19, 2008
    Assignee: Siemens Aktiengesellschaft
    Inventor: Jürgen Leppert
  • Patent number: 7368718
    Abstract: An x-ray detector with a scintillator element connected to a detection area of a photodiode via an optically transparently curing adhesive. To increase the sensitivity of the x-ray detector, it is proposed to mix the adhesive with a powder prepared from a material with a refractive index of at least 1.8 and an average grain size of less than 100 nm.
    Type: Grant
    Filed: December 21, 2005
    Date of Patent: May 6, 2008
    Assignee: Siemens Aktiengesellschaft
    Inventors: Andreas Freund, Juergen Leppert, Michael Miess
  • Patent number: 7283616
    Abstract: A collimator is disclosed. The ends of collimator plates are potted with the aid of a top plate and a bottom plate with the formation of interspaces, defined by spacings, between the collimator plates. When producing such a collimator, the top and bottom plates are produced using a casting method, and the collimator plates are simultaneously cast in, in order to fix them in the bottom and top plates. For this production method, a reusable holding apparatus that holds the collimator plates, and a casting mold are provided for aligning and positioning purposes.
    Type: Grant
    Filed: September 29, 2005
    Date of Patent: October 16, 2007
    Assignee: Siemens Aktiengesellschaft
    Inventors: Andreas Freund, Juergen Leppert, Michael Miess
  • Patent number: 7276705
    Abstract: A luminescent body is for an X-ray detector, in particular for an X-ray computer tomograph. It contains a ceramic of the general composition (M1-xLnx)2O2S, M being at least one element selected from the group: Y, La, Sc, Lu and/or Gd, and Ln being at least one element selected from the group: Eu, Ce, Pr, Tb, Yb, Dy, Sm and/or Ho. In order to improve the spatial resolution of the luminescent body, the ceramic is used in the form of fibers, which are connected in a parallel alignment to constitute a fiber plate.
    Type: Grant
    Filed: July 30, 2004
    Date of Patent: October 2, 2007
    Assignee: Siemens Aktiengesellschaft
    Inventor: Juergen Leppert
  • Patent number: 7274024
    Abstract: A radiation detector is disclosed for the detection of ionizing radiation, preferably in a medical diagnosis and/or therapy system, having at least one detector element which is at least partially enclosed by an encapsulation compound. The encapsulation compound at least partially reflects light which is produced during the absorption of the ionizing radiation in the at least one detector element. Further, the detection of the radiation is carried out indirectly by detection of the generated light, wherein the encapsulation compound is made of a multicomponent mixture which converts compounds produced because of radiation, which generate color changes of the encapsulation compound, at least partially into colorless nonabsorbing compounds.
    Type: Grant
    Filed: December 8, 2005
    Date of Patent: September 25, 2007
    Assignee: Siemens Aktiengesellschaft
    Inventors: Wilhelm Hekele, Thomas Hilderscheid, Juergen Leppert, Helmut Winkelmann, Sebastian Wolf
  • Publication number: 20070147587
    Abstract: A collimator is disclosed for stray radiation, in particular for medical X-ray devices. In addition, a method is disclosed for producing the collimator. The collimator includes numerous absorption elements for X-ray radiation which are separated from one another by a filler and support material and are aligned approximately in parallel or oriented towards a common focus. In the collimator, the absorption elements are statistically distributed. A collimator of this type is extremely cost-effective to produce.
    Type: Application
    Filed: November 11, 2004
    Publication date: June 28, 2007
    Inventor: Jürgen Leppert
  • Patent number: 7180075
    Abstract: An X-ray detector is for a CT device and includes a phosphor layer for generating electromagnetic radiation as a function of the occurrence of X-radiation, and a photodetector layer for detecting the electromagnetic radiation generated by the phosphor layer. The phosphor layer includes ceramic material and the photodetector layer includes organic material. A process is further for producing an X-ray detector, including the steps of producing a phosphor layer from a ceramic material and applying a photodetector layer made from an organic material to the phosphor layer via a spinning, printing or beam/jet process or by sticking it on as a film. It is optionally possible to provide a further process step for polishing the surface of the phosphor layer before applying the photodetector layer.
    Type: Grant
    Filed: September 23, 2003
    Date of Patent: February 20, 2007
    Assignee: Siemens Aktiengesellschaft
    Inventors: Christoph Brabec, Bjoern Heismann, Juergen Leppert, Thomas Von Der Haar
  • Patent number: 7148486
    Abstract: An image detector for an x-ray device includes photosensors which have at least two contacts on which an electrical signal occurs when x-rays are detected. In each case, at least one contact of the photosensors is arranged on its rear side, facing away from the image source. Further, the material used for the photosensors is an organic photodiode material.
    Type: Grant
    Filed: September 23, 2003
    Date of Patent: December 12, 2006
    Assignee: Siemens Aktiengesellschaft
    Inventors: Bjoern Heismann, Juergen Leppert, Thomas von der Haar
  • Patent number: 7081627
    Abstract: An image detector is for detecting electromagnetic radiation, in particular X-ray radiation. It includes a carrier layer and a photosensor carried by the carrier layer. Each of the carrier layer and photosensor both have a nonvanishing transparency to the electromagnetic radiation. The image detector includes two or more carrier layers and photosensors carried thereby, arranged one above the other, so that the electromagnetic radiation can pass through them one after the other.
    Type: Grant
    Filed: September 23, 2003
    Date of Patent: July 25, 2006
    Assignee: Siemens Aktiengesellschaft
    Inventors: Bjoern Heismann, Juergen Leppert, Thomas Von Der Haar
  • Publication number: 20060131502
    Abstract: A radiation detector is disclosed for the detection of ionizing radiation, preferably in a medical diagnosis and/or therapy system, having at least one detector element which is at least partially enclosed by an encapsulation compound. The encapsulation compound at least partially reflects light which is produced during the absorption of the ionizing radiation in the at least one detector element. Further, the detection of the radiation is carried out indirectly by detection of the generated light, wherein the encapsulation compound is made of a multicomponent mixture which converts compounds produced because of radiation, which generate color changes of the encapsulation compound, at least partially into colorless nonabsorbing compounds.
    Type: Application
    Filed: December 8, 2005
    Publication date: June 22, 2006
    Inventors: Wilhelm Hekele, Thomas Hilderscheid, Juergen Leppert, Helmut Winkelmann, Sebastian Wolf
  • Publication number: 20060131503
    Abstract: An x-ray detector with a scintillator element connected to a detection area of a photodiode via an optically transparently curing adhesive. To increase the sensitivity of the x-ray detector, it is proposed to mix the adhesive with a powder prepared from a material with a refractive index of at least 1.8 and an average grain size of less than 100 nm.
    Type: Application
    Filed: December 21, 2005
    Publication date: June 22, 2006
    Inventors: Andreas Freund, Juergen Leppert, Michael Miess
  • Publication number: 20060067479
    Abstract: A collimator is disclosed. The ends of collimator plates are potted with the aid of a top plate and a bottom plate with the formation of interspaces, defined by spacings, between the collimator plates. When producing such a collimator, the top and bottom plates are produced using a casting method, and the collimator plates are simultaneously cast in, in order to fix them in the bottom and top plates. For this production method, a reusable holding apparatus that holds the collimator plates, and a casting mold are provided for aligning and positioning purposes.
    Type: Application
    Filed: September 29, 2005
    Publication date: March 30, 2006
    Inventors: Andreas Freund, Juergen Leppert, Michael Miess
  • Publication number: 20050111627
    Abstract: A method is for shielding scattered radiation in front of a detector array including a plurality of detector elements. A scattered radiation grating, which is assembled from slat-like absorption elements for the scattered radiation, in particular for x-rays, which are separated from one another by a filler and carrier material and which run approximately parallel to one another, is arranged in front of the detector array. The scattered radiation grating is one in which the absorption elements are located so close beside one another that an average spacing of the absorption elements is smaller at least by the factor 2 than a center spacing of the detector elements of the detector array. The method permits the use of a scattered radiation grating that can be produced economically.
    Type: Application
    Filed: November 19, 2004
    Publication date: May 26, 2005
    Inventor: Juergen Leppert
  • Patent number: 6894282
    Abstract: A radiation detector has a photodiode arrangement, a number of scintillators, and a reflector part having a number of compartments corresponding to the number of scintillators, which receive the scintillators in such a way that the scintillators are surrounded by walls of the compartments with the exception of their side respectively facing the photodiode arrangement.
    Type: Grant
    Filed: September 14, 2001
    Date of Patent: May 17, 2005
    Assignee: Siemens Aktiengesellschaft
    Inventors: Andreas Freund, Jürgen Leppert
  • Publication number: 20050035294
    Abstract: A luminescent body is for an X-ray detector, in particular for an X-ray computer tomograph. It contains a ceramic of the general composition (M1-xLnx)2O2S, M being at least one element selected from the group: Y, La, Sc, Lu and/or Gd, and Ln being at least one element selected from the group: Eu, Ce, Pr, Tb, Yb, Dy, Sm and/or Ho. In order to improve the spatial resolution of the luminescent body, the ceramic is used in the form of fibers, which are connected in a parallel alignment to constitute a fiber plate.
    Type: Application
    Filed: July 30, 2004
    Publication date: February 17, 2005
    Inventor: Juergen Leppert