Patents by Inventor Rudolf Hemersam

Rudolf Hemersam 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).

  • Method of preparing a bituminuous binder and a construction material containing the same
    Patent number: 4240946
    Abstract: The invention relates to the preparation of a bituminous binder on the basis of bitumen and polyolefin. This binder is prepared in a hot mixing and homogenizing process, the homogenizing being continued until the viscosity of the binder in the course of this homogenizing being distinctly or significantly reduced. The invention also relates to the preparation of a road construction material using this binder, the inorganic additive material being heated before mixing with the binder to a temperature below the decomposition temperature of the binder.
    Type: Grant
    Filed: January 16, 1979
    Date of Patent: December 23, 1980
    Assignee: Bunzl & Biach Aktiengesellschaft
    Inventor: Rudolf Hemersam