Patents by Inventor Jeremi Marszaek

Jeremi Marszaek 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 preparing phosphoric acid
    Patent number: 6365117
    Abstract: A method for preparing phosphoric acid from calcium phosphate ores, particularly ores highly contaminated with organic compounds, by decomposing the ore with sulphuric acid, wherein according to the invention the process of decomposition of calcium phosphate ores with sulphuric acid and circulating phosphoric acid is carried out in oxidizing conditions provided by a constant supply of ozone to the reaction slurry, preferably to the zone of commencing decomposition of the phosphate ores.
    Type: Grant
    Filed: September 13, 1999
    Date of Patent: April 2, 2002
    Assignees: Instytut Chemii Nieorganicznej, Zaklady Chemiczne Police S.A.
    Inventors: Bronisaw Trefler, Stanisaw Folek, Kazimierz ach, Jeremi Marszaek, Piotr Masztalerz, Jan Sosnowski, Jerzy Sowa, Zbigniew Tomaszewski, Andrzej Wysocki