Patents Assigned to Ulrike Hungerbach
  • Oral hygiene agent containing hydrogen peroxide stabilized by colloidal silver
    Patent number: 5437858
    Abstract: The present application is directed to oral hygiene agents, a process for their preparation, and the use of a hydrogen peroxide solution stabilized by a silver colloid in concentrations of from 0.1 to 10% by weight, preferably from 1 to 3% by weight, in oral hygiene agents.
    Type: Grant
    Filed: March 11, 1994
    Date of Patent: August 1, 1995
    Assignee: Ulrike Hungerbach
    Inventors: Heinz Hungerbach, Werner Struzina, Albrecht Hoburg