Patents by Inventor Dan L. McEachern

Dan L. McEachern 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).

  • Chromatography column and end plug assembly
    Patent number: 4563275
    Abstract: A novel column cartridge for a chromatography apparatus, particularly HPLC, is comprised of a hollow metal tube, open at both ends and having internal shoulders facing each open end, and a pair of end plugs each having a frusto-conical shape at its outer end. The end plugs are sealed into place by rolling the tube end to compress it against the frustum surface, leaving a short length of plug extending beyond the tube end for compression sealing against a conventional holder or mounting device.
    Type: Grant
    Filed: August 1, 1984
    Date of Patent: January 7, 1986
    Assignee: Bio-Rad Laboratories, Inc.
    Inventor: Dan L. McEachern