Patents by Inventor Christopher R. MacAskill

Christopher R. MacAskill 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).

  • Metering pump
    Patent number: 4509904
    Abstract: A high precision, high pressure, volumetric metering pump in which the driving motor is reciprocated by rotation of a ball screw, the drive motor assembly being integral with the driving and pumping shaft, is disclosed.
    Type: Grant
    Filed: October 4, 1983
    Date of Patent: April 9, 1985
    Assignee: Petrophysical Services, Inc.
    Inventors: Christopher R. MacAskill, Jared M. Potter