Patents by Inventor Klaus Stutzel

Klaus Stutzel 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 of preparing trisodium 2,4,6-mercapto-s-triazine nonahydrate
    Patent number: 5006654
    Abstract: The trisodium salt of 2,4,6-trimercapto-s-triazine nonahydrate (TMT-Na.sub.3 9H.sub.2 O) is prepared by reacting cyanuric chloride with NaHS and NaOH or with a mixture of NaHS and Na.sub.2 S and NaOH in an alkaline, aqueous medium.
    Type: Grant
    Filed: May 23, 1989
    Date of Patent: April 9, 1991
    Assignee: Degussa Aktiengesellschaft
    Inventors: Karl Ludwig, Edwin van Raemdonck, Klaus Stutzel, Marcel Vingerhoets
  • Trisodium salt of 2,4,6-trisodium mercapto-s-triazine monohydrate and method for its preparation
    Patent number: 4849517
    Abstract: The trisodium salt of 2,4,6-trimercapto-s-triazine non-ahydrate (TMT-Na.sub.3 9H.sub.2 O) is prepared by reacting cyanuric chloride with NaHS and NaOH or with amixture of NaHS and Na.sub.2 S and NaOH in an alkaline, aqueous medium.
    Type: Grant
    Filed: August 26, 1988
    Date of Patent: July 18, 1989
    Assignee: Degussa Aktiengesellschaft
    Inventors: Karl L. Weber, Edwin van Raemdonck, Klaus Stutzel, Marcel Vingerhoets
  • Process for the treatment of continuous waste water streams having changing contents of different oxidizable materials with hydrogen peroxide
    Patent number: 4416786
    Abstract: There is provided a continuous process for the lowering of the content of toxic materials in waste waters which also contain other oxidizable materials by quickly and continuously ascertaining the requirement of hydrogen peroxide, namely by potentiometric determination of the oxidizing agent requirement in a branched-off side-stream using a strong oxidizing agent, such as peroxymonosulfate, peroxydisulfate, permanganate, hypochlorite or ozone, which acts more quickly than hydrogen peroxide under comparable conditions.
    Type: Grant
    Filed: June 28, 1982
    Date of Patent: November 22, 1983
    Assignee: Degussa
    Inventors: Helmut Knorre, Joachim Fischer, Klaus Stutzel
  • Process for the separation of Cu.sup.++ -ions from sewage, waste water and aqueous solutions
    Patent number: 4172785
    Abstract: Copper (Cu.sup.++)-ions are separated from an effluent containing complexing agents which are ethylenediamine tetraacetic acid and/or diethylenetriamine pentaacetic acid or their anionic salts, by using an HS-containing triazine compound and Fe.sup.+++ -ions in a quantity at least equal to the amount of complexing agent.
    Type: Grant
    Filed: September 19, 1977
    Date of Patent: October 30, 1979
    Assignee: Deutsche Gold- und Silber-Scheideanstalt vormals Roessler
    Inventors: Helmut Knorre, Gerhard Pohl, Klaus Stutzel
  • Process for the separation of cadmium (Cd.sup.++)-ions from sewage, waste water and aqueous solutions
    Patent number: 4172784
    Abstract: Cadmium (Cd.sup.++) ions are separated from an effluent containing complexing agent such as nitrilotriacetic acid, ethylenediamine tetraacetic acid and/or diethylenetriamine pentaacetic acid, or their anionic salts by using an HS-containing triazine compound and Fe.sup.+++ ions in a quantity at least equal to the amount of complexing agent.
    Type: Grant
    Filed: September 6, 1977
    Date of Patent: October 30, 1979
    Assignee: Deutsche Gold- und Silber-Scheideanstalt vormals Roessler
    Inventors: Helmut Knorre, Gerhard Pohl, Klaus Stutzel