Patents by Inventor Horst Lieker

Horst Lieker 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 reducing the bromide content in an aqueous bromide-containing solution using hydrogen peroxide
    Patent number: 6761873
    Abstract: The invention relates to a method for reducing the bromide content in an aqueous bromide-containing solution using hydrogen peroxide.
    Type: Grant
    Filed: February 20, 2001
    Date of Patent: July 13, 2004
    Inventors: Graalf Remmers, Horst Lieker
  • Method and device for producing nickel sulphamate
    Publication number: 20040022714
    Abstract: The method allows for nickel sulphamate to be produced by means of reacting elementary nickel with sulphamic acid. Therein, the nickel is disintegrated by strong stirring, mixing, or dispersing of the nickel-acid mixture by means of a stirring, mixing, or dispersing tool, introducing high energy density into the reaction mixture. Herein, the nickel is oxidized by reduction of the acid protons of the sulphamic acid without adding special oxidization means. The nickel sulphamate contained in an aqueous solution is especially suitable for electroplating technology since it is for the most part free of foreign ions and amorphous nickel sedimentations.
    Type: Application
    Filed: July 11, 2003
    Publication date: February 5, 2004
    Inventors: Graalf Remmers, Horst Lieker
  • Process and apparatus for preparing a solution of a non-ferrous metal sulphonate
    Patent number: 5162555
    Abstract: The invention relates to a process for preparing a solution of a non-ferrous metal sulphonate by reacting a non-ferrous metal with a sulphonic acid, the non-ferrous metal being brought into contact with a sulphonic acid at a temperature of from 20.degree. to 120.degree. C. in the presence of oxygen or oxygen-containing gases.
    Type: Grant
    Filed: December 10, 1990
    Date of Patent: November 10, 1992
    Assignee: Cassella Aktiengesellschaft
    Inventors: Graalf Remmers, Horst Lieker