Patents by Inventor Hans-Ulrich Scheller

Hans-Ulrich Scheller 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 for hypersensitive teeth
    Patent number: 4710372
    Abstract: A dentifrice for hypersensitive teeth containing at least 15% by weight of an apatite having an average particle size of less than 8 .mu.m and an abrasion value (RDA) of less than 30 as the sole crystalline and polishing substance. No further soluble mineral salts are present in the dentifrice. The dentifrice may also contain a local anesthetic.
    Type: Grant
    Filed: September 25, 1986
    Date of Patent: December 1, 1987
    Assignee: Wurttembergische Parfumerie-Fabrik GmbH
    Inventor: Hans-Ulrich Scheller
  • Dentifrice for hypersensitive teeth
    Patent number: 4634589
    Abstract: A dentifrice for hypersensitive teeth containing at least 15% by weight of an apatite having an average particle size of less than 8 .mu.m and an abrasion value (RDA) of less than 30 as the sole crystalline and polishing substance. No further soluble mineral salts are present in the dentifrice. The dentifrice may also contain a local anesthetic.
    Type: Grant
    Filed: May 7, 1985
    Date of Patent: January 6, 1987
    Assignee: Wurttembergische Parfumerie-Fabrik GmbH
    Inventor: Hans-Ulrich Scheller
  • Paste and powder dentifrices
    Patent number: 4223003
    Abstract: A dentrifice in paste or powder form which contains, in addition to the usual constituents, at least one physiologically compatible, natural or synthetic dye and at least one high-foam surfactant and in which the dye and surfactant contents are so co-ordinated that colored foam produced by the user on brushing takes 20 seconds or more to become white or only pale in color so that this serves as an indication of the correct period of brushing necessary.
    Type: Grant
    Filed: April 20, 1979
    Date of Patent: September 16, 1980
    Assignee: Wurttembergische Parfumerie-Fabrik GmbH
    Inventor: Hans-Ulrich Scheller