Patents by Inventor Tommy J. O'Shea

Tommy J. O'Shea 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).

  • Ion-permeable polymer joint for use in capillary electrophoresis
    Patent number: 5169510
    Abstract: Improved capillary electrophoresis (CE) apparatus (10) is provided which includes an intermediate grounding joint (34) serving to isolate delicate electrochemical detectors (32, 54, 58) from the high voltage CE power supply (20). The joint (34) includes a fracture (36) close to the detection end (22) of the apparatus (10) which is covered by a Nafion sleeve (38). The joint (34) is immersed in an ionic buffer reservoir (46) which includes a grounded cathode (48). In fabrication procedures, a capillary tube (12) is scored in proximity to one end (22) thereof, and the Nafion sleeve (38) is slid over the score line. The sleeve (38) is then sealed with epoxy (40, 42) at the ends thereof.
    Type: Grant
    Filed: March 2, 1992
    Date of Patent: December 8, 1992
    Assignee: Oread Laboratories
    Inventors: Susan M. Lunte, Craig E. Lunte, Tommy J. O'Shea