Patents by Inventor Joseph Welsch

Joseph Welsch 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).

  • Process of making superfine amorphous high structure silicic acid
    Patent number: 4003981
    Abstract: Superfine amorphous, high structure silicic acid is made by subjecting the components in the precipitation reaction, that is, an acid or acidic substance and an alkali-metal silicate solution to a shearing force during the alkaline phase of the precipitation reaction, the shearing force being applied by passing the reaction mass in a continuous flow through a dispersing device and the dispersing device being operated with an hourly throughput frequency of at least 10 h.sup..sup.-1, the said frequency being determined as the ratio of the performance of the dispersing device to the initial volume of the reaction mass.The high structure silicic acid is particularly useful as carrier and filler for pesticides, animal feed additives and as matting agent for lacquers.
    Type: Grant
    Filed: February 25, 1976
    Date of Patent: January 18, 1977
    Assignee: Deutsche Gold- und Silber-Scheideanstalt vormals Roessler
    Inventors: Gunter Turk, Joseph Welsch
  • Process of making superfine amorphous high structural silicic acid
    Patent number: 4001379
    Abstract: Superfine amorphous, high structure silicic acid is made by subjecting the components in the precipitation reaction, that is, an acid or acidic substance and an alkali-metal silicate solution to a shearing force during the alkaline phase of the precipitation reaction, the shearing force being applied by passing the reaction mass in a continuous flow through a dispersing device and the dispersing device being operated with an hourly throughput frequency of at least 10h.sup.- .sup.1, the said frequency being determined as the ratio of the performance of the dispersing device to the initial volume of the reaction mass.The high structure silicic acid is particularly useful as carrier and filler for pesticides, animal feed additives and as matting agent for lacquers.
    Type: Grant
    Filed: September 21, 1972
    Date of Patent: January 4, 1977
    Assignee: Deutsche Gold- und Silber-Scheideanstalt vormals Roessler
    Inventors: Gunter Turk, Joseph Welsch