Patents by Inventor Karl-Friedrich Krebs

Karl-Friedrich Krebs 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).

  • Adsorbents for chromatography and adsorption processes
    Patent number: 5098576
    Abstract: In adsorption and chromatography proceseses for the separation of at least one substance from a mixture of substances, silicon carbide is used as the adsorbent and as a support material in such processes.
    Type: Grant
    Filed: May 9, 1991
    Date of Patent: March 24, 1992
    Assignee: Merck Patent Gesellschaft mit beschrankter Haftung
    Inventors: Karin Cabrera, Willi Jost, Karl-Friedrich Krebs
  • Separating materials for thin layer chromatography and their preparation
    Patent number: 4295968
    Abstract: A separating material for thin-layer chromatography, comprising a substrate material coated with a thin sorbent layer, wherein the sorbent layer optionally contains a binder, an indicator, or both, is improved in that the sorbent layer has a surface modified by reacting the sorbent layer with a silanizing agent without the exclusion of moisture.
    Type: Grant
    Filed: March 20, 1978
    Date of Patent: October 20, 1981
    Assignee: Merck Patent Gesellschaft mit beschrankter Haftung
    Inventors: Herbert Halpaap, Karl-Friedrich Krebs
  • Coated carrier materials for thin layer chromatography having a concentrating zone
    Patent number: 4158626
    Abstract: TLC plates having a concentrating zone located adjacent to and before a chromatography layer are improved by using as the layer for the concentrating zone a silicon dioxide of medium pore volume (e.g., 0.5-1.5 ml/g) and a pore width of 2-15 .mu.m.
    Type: Grant
    Filed: May 25, 1978
    Date of Patent: June 19, 1979
    Assignee: Merck Patent Gesellschaft mit beschrankter Haftung
    Inventors: Herbert Halpaap, Karl-Friedrich Krebs, Hans Heinz