Patents by Inventor Heinz E. Hauck

Heinz E. Hauck 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).

  • Separation materials for thin layer chromatography
    Patent number: 4793921
    Abstract: New separation materials for thin layer chromatography are based on carrier materials coated with an adsorbent silica gel layer which has been surface-modified by a silanizing agent after the coating step. The degree of covering of the modifying reagent can be adjusted in a defined an controllable manner, e.g., from 0.15 to 0.8 .mu.mol/m.sup.2 in the case of reversed phase materials and 1.2 to 2.5 .mu.mol/m.sup.2 in the case of hydrophilic materials. A process for the preparation of these separation materials is also provided.
    Type: Grant
    Filed: December 9, 1987
    Date of Patent: December 27, 1988
    Assignee: Merck Patent Gesellschaft Mit Beschrankter Haftung
    Inventors: Heinz E. Hauck, Willi Jost
  • Separation materials for thin layer chromatography
    Patent number: 4741830
    Abstract: New separation materials for thin layer chromatography are based on carrier materials coated with an adsorbent silica gel layer which has been surface-modified by a silanizing agent after the coating step. The degree of covering of the modifying reagent can be adjusted in a defined and controllable manner, e.g., from 0.15 to 0.8 .mu.mol/m.sup.2 in the case of reversed phase materials and 1.2 to 2.5 .mu.mil/m.sup.2 in the case of hydrophilic materials. A process for the preparation of these separation materials is also provided.
    Type: Grant
    Filed: February 11, 1987
    Date of Patent: May 3, 1988
    Assignee: Merck Patent Gesellschaft mit beschrankter Haftung
    Inventors: Heinz E. Hauck, Willi Jost
  • Process for increasing the resistance to water of pre-coated preparations for chromatography
    Patent number: 4271021
    Abstract: A process for increasing the resistance to water of a chromatographic sorbent layer coated onto a support and comprising a binder of (a) salt(s) of (a) polyacrylic acid(s) and/or polymethacrylic acid(s), comprises treating the coated sorbent layer with an acid and then washing and drying the acid treated layers. The thus-prepared chromatographic materials are not only highly water resistant but also have an advantageously low impurity content.
    Type: Grant
    Filed: December 5, 1979
    Date of Patent: June 2, 1981
    Assignee: Merck Patent Gesellschaft mit Beschrankter Haftung
    Inventor: Heinz E. Hauck