Patents Assigned to Scharing Aktiengesellschaft
  • 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