Patents by Inventor Ludwig Sigmund

Ludwig Sigmund 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).

  • Patent number: 4592376
    Abstract: A hair dye applicating apparatus has a handle part formed as a hair dye supply container, a combination part connected with the supply container, a hair separating tip arranged on the combination part in spaced relationship with the supply container, a comb member having a plurality of tines and arranged on the combination part adjacent the supply container, a hair dye application part including a displaceable brush member having a plurality of bristle bundles, and an elastic nozzle member located inside the brush member so as to be surrounded by the bristle bundles and to form a hair dye outlet opening.
    Type: Grant
    Filed: April 3, 1981
    Date of Patent: June 3, 1986
    Assignee: Wella Aktiengesellschaft
    Inventors: Ludwig Sigmund, Franz Steigerwald, Karlheinz Zulauf
  • Patent number: 4308977
    Abstract: A dispensing device for applying a pasty substance, for example to a human hair, comprises a cup-shaped cylindrical container and a piston located therein and displaceable within the container. The container is sealingly connected to an operating extension having a cylindrical passage terminated with a dispensing nozzle which is selectively closed by a sealing cap. The piston is formed with two sealing lips spaced from one another in the axial direction and outwardly and angularly extending from the periphery of the piston so that one of the lips sealingly connects the piston to the internal wall of the container whereby the second lip is adapted to reliably guide said piston within the container.
    Type: Grant
    Filed: March 24, 1980
    Date of Patent: January 5, 1982
    Assignee: Wella Aktiengesellschaft
    Inventors: Ludwig Sigmund, Norbert Golzer, Franz Steigerwald