Patents by Inventor Achim Kulling

Achim Kulling 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 for manufacturing a stable titanyl sulfate solution
    Patent number: 4275041
    Abstract: A process is provided for the manufacture of a stable titanyl sulfate solution by diluting a reaction mixture containing iron sulfate and titanyl sulfate with a material selected from water, a titanyl sulfate solution, and mixtures thereof. The titanyl sulfate solution may be recovered or processed to provide titanium dioxide hydrate which may be calcined to provide titanium dioxide pigment.
    Type: Grant
    Filed: September 19, 1980
    Date of Patent: June 23, 1981
    Assignee: NL Industries, Inc.
    Inventors: Joseph L. Waldman, Edgar Klein, Achim Kulling, Joseph A. Rahm
  • Process for the manufacture of an aqueous iron (III)-chloride-sulfate solution
    Patent number: 4207201
    Abstract: The application is concerned with a process for the manufacture of an aqueous iron (III)-chloride-sulfate solution by the oxidation of iron (II) sulfate with chlorine in aqueous solution.
    Type: Grant
    Filed: March 8, 1978
    Date of Patent: June 10, 1980
    Assignee: Kronos Titan GmbH
    Inventors: Achim Hartmann, Achim Kulling, Dieter Schinkitz, Edgar Klein
  • Process for recovery of iron oxide and chlorine from dust produced in chlorination of titaniferous ores
    Patent number: 4060584
    Abstract: The dust produced in the chlorination of titaniferous ores comprises essentially particulate ferrous chloride plus solid contaminants including coke and various metal chlorides and oxides and is oxidized in successive stages at relatively low temperatures to recover particulate iron oxide and gaseous chlorine.
    Type: Grant
    Filed: February 14, 1977
    Date of Patent: November 29, 1977
    Assignee: Kronos Titan G.m.b.H.
    Inventors: Achim Hartmann, Achim Kulling, Hans Thumm