Patents by Inventor Helga Burger

Helga Burger 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).

  • Cleaning compositions containing boric acid or an alkali metal borate in phosphoric acid and their use in cleaning solid surfaces
    Patent number: 4485027
    Abstract: This invention is directed to a process for cleaning solid surfaces with aqueous alkaline cleaning compositions comprising (a) strongly alkaline active-substance concentrates and (b) acidic active-substance concentrates comprising dispersions of boric acid or alkali metal borates in orthophosphoric acid. Component (a) is present in an excess over component (b) sufficient to cause an alkaline medium.
    Type: Grant
    Filed: September 30, 1983
    Date of Patent: November 27, 1984
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Christian Rossmann, Helga Burger
  • Regeneration of aqueous degreasing and cleaning solutions
    Patent number: 4436643
    Abstract: Process for regenerating alkaline and neutral silicate-free and phosphate-free cleaning solutions that are contaminated with emulsified mineral or natural oils by (a) adding thereto an alkali metal phosphate and/or an alkali metal silicate, and then (b) adding a soluble calcium and/or magnesium salt to the resulting solution.
    Type: Grant
    Filed: April 23, 1982
    Date of Patent: March 13, 1984
    Assignee: Henkel KGaA
    Inventors: Helga Burger, Christian Rossmann
  • Process for regenerating cleaning solutions
    Patent number: 4409119
    Abstract: Process for regenerating alkaline and neutral phosphate and/or silicate-containing degreasing and cleaning solutions which are contaminated with emulsified mineral and/or natural oils, by treating such contaminated solutions with a controlled quantity of either calcium ions, magnesium ions, or a mixture thereof.
    Type: Grant
    Filed: April 23, 1982
    Date of Patent: October 11, 1983
    Assignee: Henkel Kommanditgesellschaft Auf Aktien
    Inventors: Helga Burger, Christian Rossmann