Patents by Inventor Dieter Heldmann

Dieter Heldmann 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).

  • Contrast medium for near infrared diagnosis
    Patent number: 6319488
    Abstract: This invention relates to colloidal systems charged with polymethine dyes and having suitable photophysical and pharmacological properties, their use as a contrast medium in fluorescence and transillumination diagnostics in the near infrared spectral range, as well as methods for their production.
    Type: Grant
    Filed: April 9, 1998
    Date of Patent: November 20, 2001
    Assignee: Institut für Diagnostikforschung GmbH an der Freien Universität Berlin
    Inventors: Kai Licha, Björn Riefke, Werner Weitschiess, Dieter Heldmann, Violetta Sudmann
  • Microparticles that contain gas, galactose and a saturated fatty acid
    Patent number: 6306366
    Abstract: Compositions containing microparticles having at least one surface-active substance and at least one non-surface-active solid with a gaseous component containing a halogenated hydrocarbon that is gaseous at body temperature, wherein the gaseous component is more poorly water-soluble than air. Also, ultrasonic contrast media containing such composition, processes for their production, kits for their production and methods of use.
    Type: Grant
    Filed: August 6, 1998
    Date of Patent: October 23, 2001
    Assignee: Schering Aktiengesellschaft
    Inventors: Dieter Heldmann, Werner Weitschies, Thomas Fritzsch, Ulrich Speck
  • Microparticles containing active ingredients, agents containing these microparticles, their use for ultrasound-controlled release of active ingredients, as well as a process for their production
    Patent number: 6284280
    Abstract: The invention relates to new microparticles containing active ingredients, which contain at least one gas or a gaseous phase in addition to the active ingredient(s), agents containing these particles (microparticulate systems), their use for ultrasound-controlled in vivo release of active ingredients, as well as a process for the production of particles and agents.
    Type: Grant
    Filed: December 13, 1999
    Date of Patent: September 4, 2001
    Assignee: Schering Aktiengesellschaft
    Inventors: Werner Weitschies, Dieter Heldmann, Peter Hauff, Thomas Fritzsch, Harald Stahl
  • Ultrasonic contrast agents, process for their preparation and their use as a diagnostic and therapeutic agent
    Patent number: 6264959
    Abstract: The invention relates to ultrasonic contrast agents consisting of microparticles which consist of amyloses and synthetic biodegradable polymers and a gas and/or a fluid with a boiling point below 60° C., process for the preparation thereof and their use as diagnostic and therapeutic agents.
    Type: Grant
    Filed: June 11, 1990
    Date of Patent: July 24, 2001
    Assignee: Schering Aktiengesellschaft
    Inventors: Michael Stein, Dieter Heldmann, Thomas Fritzsch, Joachim Siegert, Georg Roessling
  • Agents and methods for enhancing contrast in ultrasound imaging
    Patent number: 6177062
    Abstract: The invention relates to ultrasonic contrast agents comprising microparticles which comprise synthetic biodegradable polymers and a gas and/or a fluid with a boiling point below 60° C., processes for the preparation thereof and their use as diagnostic and therapeutic agents.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: January 23, 2001
    Assignee: Schering Aktiengesellschaft
    Inventors: Michael Stein, Dieter Heldmann, Thomas Fritzsch, Joachim Siegert, Georg Roessling
  • Polyalkylcyanoacrylate agents and methods for enhancing contrast in ultrasound imaging
    Patent number: 6071496
    Abstract: The invention relates to ultrasonic contrast agents comprising microparticles which comprise synthetic biodegradable polymer which is a polyalkylcyanoarylate and a gas and/or a fluid with a boiling point below 60.degree. C., processes for the preparation thereof and their use as diagnostic and therapeutic agents.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: June 6, 2000
    Assignee: Scharing Aktiengesellschaft
    Inventors: Michael Stein, Dieter Heldmann, Thomas Fritzsch, Joachim Siegert, Georg Roessling, Ulrich Speck
  • Microparticles containing active ingredients, agents containing these microparticles, their use for ultrasound-controlled release of active ingredients, as well as a process for their production
    Patent number: 6068857
    Abstract: The invention relates to new microparticles containing active ingredients, which contain at least one gas or a gaseous phase in addition to the active ingredient(s), agents containing these particles (microparticulate systems), their use for ultrasound-controlled in vivo release of active ingredients, as well as a process for the production of particles and agents.
    Type: Grant
    Filed: August 5, 1996
    Date of Patent: May 30, 2000
    Assignee: Schering Aktiengesellchaft
    Inventors: Werner Weitschies, Dieter Heldmann, Peter Hauff, Thomas Fritzsch, Harald Stahl
  • Ultrasonic contrast agents for color Doppler imaging
    Patent number: 5425366
    Abstract: The invention relates to a method for obtaining an ultrasonic image of a patient with ultrasonic color Doppler modality with microparticulate ultrasonic contrast agents in regions where the ultrasonic contrast agents are essentially motionless.
    Type: Grant
    Filed: June 7, 1993
    Date of Patent: June 20, 1995
    Assignee: Schering Aktiengesellschaft
    Inventors: Michael Reinhardt, Thomas Fritzsch, Dieter Heldmann, Joachim Siegert