Patents by Inventor Joachim Hlavatsch

Joachim Hlavatsch 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).

  • Coating pigment for cellulose - based printing media
    Patent number: 5423911
    Abstract: A coating pigment for coating printing media, especially paper and cardboard, is made with at least one swellable layer silicate which can be fixed on the printing medium essentially without binders, where the amount of swellable layer silicate is at least 30 weight percent and the swelling volume of the coating pigment is 5 to 30 ml, based on suspension of 2 g coating pigment in 100 ml water. A water-based coating which contains such a coating pigment and a printing medium that is coated on one or both sides with the coating pigment or coating are also described. The deinkability of printed printing media coated with the coating pigment is improved.
    Type: Grant
    Filed: May 25, 1993
    Date of Patent: June 13, 1995
    Assignee: Sud-Chemie A.G. Aktiengesellschaft
    Inventors: Helmut Coutelle, Joachim Hlavatsch, Friedrich Ruf, Hartmann Schott