Patents Assigned to Hans R. Muhlemann
  • Solid oral preparations of urea hydrogen peroxide without glycerol
    Patent number: 4302441
    Abstract: Solid oral preparations comprising active urea hydrogen peroxide without glycerol are effective in countering acid formed from fermentable carbohydrates in dental plaques.
    Type: Grant
    Filed: April 11, 1980
    Date of Patent: November 24, 1981
    Assignee: Hans R. Muhlemann
    Inventors: Hans R. Muhlemann, Allen R. Firestone, Thomas Imfeld