Patents by Inventor Hans Olschner

Hans Olschner 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).

  • Less abrasive pigment or printing ink, and method of reducing abrasion caused by pigments and printing inks
    Patent number: 4462832
    Abstract: The abrasiveness of a pigment or printing ink is reduced by incorporation of one or more finely divided substances which are insoluble in printing inks and have a Mohs hardness of from 4.5 to 8, suitable compounds being iron powder, compounds of iron, zirconium, silicon and magnesium, aluminum silicates, oxides of manganese, tin and cerium, or mixtures of these. The printing inks obtained cause substantially less, or virtually no, abrasion of gravure printing cylinders.
    Type: Grant
    Filed: November 27, 1981
    Date of Patent: July 31, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Werner Jettmar, Hans Olschner, Helmut Junge