Patents by Inventor Aarno T. Salervo

Aarno T. Salervo 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 for mixing molten iron silicate with ferroalloy slag in order to produce fire-resistant and chemically resistant fiber
    Patent number: 4946811
    Abstract: The present invention relates to a method for preparing iron silicate slags, by means of mixing with ferroalloy slag, to a molten slag which can be defibrated into fire-resistant and chemically resistant fibers. The advantageous composition for the molten slag is 15-25% Fe, 45-69%, SiO.sub.2 0-5% CaO, 4-10% MgO, 5-15% Al.sub.2 O.sub.3 and 0.5-3% Cr (percentages by weight).
    Type: Grant
    Filed: August 17, 1989
    Date of Patent: August 7, 1990
    Assignee: Outokumpu Oy
    Inventors: Frans H. Tuovinen, Aarno T. Salervo