Patents by Inventor Friedhelm Steinberg

Friedhelm Steinberg 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).

  • Printing paste
    Patent number: 4111704
    Abstract: A printing paste for marking non-weldable areas in the manufacture of ducted plates. The paste is composed of approximately equal parts by weight of(A) a dispersion comprising about 5 to 60% by weight of titanium dioxide, about 0.10 to 4% by weight of magnesium montmorillonite, up to about 10% by weight of silica and the balance of water, and(B) a dispersion comprising about 25 to 35 parts by weight of alginate, about 50 to 70 parts by weight of chemically pure silica having a submicroscopic particle size, 2 to 4 parts by weight of highly concentrated ammonia solution, and about 1000 parts by weight of water.
    Type: Grant
    Filed: March 30, 1977
    Date of Patent: September 5, 1978
    Assignee: Metallgesellschaft Aktiengesellschaft
    Inventors: Friedhelm Steinberg, Gunter Voss