Patents by Inventor Chester C. Siemion

Chester C. Siemion 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).

  • Chromatographic column
    Patent number: 4483374
    Abstract: A method is provided for packing a high pressure liquid chromatographic column to obtain increased efficiency by suspending the packing in an alcohol medium between a lower liquid phase (e.g. carbon tetrachloride) and an upper liquid phase (e.g. isooctane) and passing the liquids under high pressure through an unpacked column lower layer first. The packing is retained in the column.
    Type: Grant
    Filed: November 1, 1982
    Date of Patent: November 20, 1984
    Assignee: Ethyl Corporation
    Inventor: Chester C. Siemion