Patents by Inventor Ivan Again

Ivan Again 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).

  • Dentifrice
    Patent number: 5158764
    Abstract: A dentifrice consists of the customary known non-abrasive dentifrice components which contains cellulose powder instead of customary known polishing bodies as the abrasive component.
    Type: Grant
    Filed: October 9, 1991
    Date of Patent: October 27, 1992
    Assignee: Degussa
    Inventors: Ivan Again, Vera Boyanova, Karin Otto, Matthias Neumuller, Harald Dippmann