Patents by Inventor Thomas Imfeld

Thomas Imfeld 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).

  • Radio-opaque bioactive glass materials
    Patent number: 8658188
    Abstract: Nanoparticulate material containing a matrix and embedded therein a radiopacifier are bioactive, show a high alkaline capacity and are radio-opaque. Compositions and formulations including such material are particularly useful in advanced dental applications, such as dental fillings and/or disinfection.
    Type: Grant
    Filed: August 17, 2010
    Date of Patent: February 25, 2014
    Assignees: Universitat Zurich
    Inventors: Wendelin Jan Stark, Dirk Mohn, Matthias Zehnder, Thomas Imfeld
  • RADIO-OPAQUE BIOACTIVE GLASS MATERIALS
    Publication number: 20120148646
    Abstract: Nanoparticulate material containing a matrix and embedded therein a radiopacifier are bioactive, show a high alkaline capacity and are radio-opaque. Compositions and formulations including such material are particularly useful in advanced dental applications, such as dental fillings and/or disinfection.
    Type: Application
    Filed: August 17, 2010
    Publication date: June 14, 2012
    Applicants: UNIVERSITAT ZURICH, ETH ZURICH
    Inventors: Wendelin Jan Stark, Dirk Mohn, Matthias Zehnder, Thomas Imfeld
  • 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