Patents by Inventor Josef Kresse

Josef Kresse 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).

  • Patent number: 6059897
    Abstract: Process for post-sealing anodized metal surfaces, characterized in that the anodized metal is contacted with an aqueous solution for a period of between 0.5 and 2 minutes per micrometer of anodized coating thickness, which solution is at a temperature of between 75.degree. C. and its boiling point and has a pH of from 5.5 to 8.5 and which contains:(a) a total of 0.0004 to 0.05 g/l of one or more cationic, anionic or non-ionic surfactants; and(b) a total of 0.0005 to 0.5 g/l of one or more organic acids selected from cyclic polycarboxylic acids having 3 to 6 carboxyl groups and/or phosphonic acids.Non-ionic surfactants are preferred as the surfactants while polyphosphinocarboxylic acids are preferred as the acids. Alkali and/or alkaline earth metal cations, preferably Li and/or Mg ions, are optionally present in quantities of 0.0001 to 5 g/l.
    Type: Grant
    Filed: November 30, 1998
    Date of Patent: May 9, 2000
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Torsten Koerner, Josef Kresse
  • Patent number: 5935656
    Abstract: A process for sealing anodized metal surfaces is characterized by bringing the anodized metal into contact with an aqueous solution at a temperature from 75.degree. C. to the boiling point of the solution for a time equal to from 0.5 to 2 minutes per micrometer of anodized layer thickness. The solution contains: a) from 0.0001 to 5 g/l of one or more alkali metal and/or alkaline earth metal ions and b) from 0.0005 to 0.5 g/l of one or more organic acids selected from: polycarboxylic acids with from 3 to 6 carboxyl groups; phosphonic acids; and/or polyphosphinocarboxylic acids, the solution containing a greater amount of metal ions of group a) than is needed to insure complete neutralization of the acids of group b).
    Type: Grant
    Filed: April 20, 1998
    Date of Patent: August 10, 1999
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Torsten Koerner, Josef Kresse, Wolf-Achim Roland, Juergen Lindener
  • Patent number: 5891269
    Abstract: A process for sealing anodized metals without using any heavy metals comprises a first step in which the anodized metal is contacted for a period of between 3 and 30 minutes (for an anodized layer thickness of 20 .mu.m) with an aqueous solution which has a temperature from 15.degree. to 35.degree. C. and a pH between 5.0 and 6.5 and contains from 0.1 to 3 g/l of lithium ions and from 0.1 to 5 g/l of fluoride ions and a second step in which the anodized metal is contacted for a period from 5 to 30 minutes (for an anodized layer thickness of 20 .mu.m) with water or an aqueous solution of substances which prevent the formation of a sealing coating, the solution having a pH from 5.5 to 8.5 and a temperature from 80.degree. to 100.degree. C.
    Type: Grant
    Filed: January 7, 1998
    Date of Patent: April 6, 1999
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Torsten Koerner, Josef Kresse, Juergen Lindener, Wolf-Achim Roland