Patents by Inventor Robert S. Wenstrup

Robert S. Wenstrup 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).

  • Ferrographic apparatus
    Patent number: 6303030
    Abstract: A ferrographic apparatus and method incorporate a priming operation that moves a priming fluid, in a direction opposite to the flow direction subsequently followed by the sample fluid, through a fluid pathway including the flow chamber. The fluid pathway is configured to facilitate dissipation of any gas bubble introduced into it during the priming operation and to reduce adventitious deposition of specimen material at locations other than the substrate. Sample fluid to be analyzed is added to the reservoir so as to form a bubble-free interface with the priming fluid, and the direction of movement through the flow chamber is reversed. The resulting continuous fluid column is advanced through the fluid pathway so that the sample fluid enters the flow chamber through the inlet port and passes through the magnetic field gradient, exiting through an orifice at the opposite end of the flow chamber serving as the outlet port.
    Type: Grant
    Filed: September 11, 2000
    Date of Patent: October 16, 2001
    Assignee: Guilfoyle, Inc.
    Inventors: John B. Desjardins, William W. Seifert, Robert S. Wenstrup, Vernon C. Westcott
  • Ferrographic method
    Patent number: 6156208
    Abstract: A ferrographic apparatus and method incorporate a priming operation that moves a priming fluid, in a direction opposite to the flow direction subsequently followed by the sample fluid, through a fluid pathway including the flow chamber. The fluid pathway is configured to facilitate dissipation of any gas bubble introduced into it during the priming operation and to reduce adventitious deposition of specimen material at locations other than the substrate. Sample fluid to be analyzed is added to the reservoir so as to form a bubble-free interface with the priming fluid, and the direction of movement through the flow chamber is reversed. The resulting continuous fluid column is advanced through the fluid pathway so that the sample fluid enters the flow chamber through the inlet port and passes through the magnetic field gradient, exiting through an orifice at the opposite end of the flow chamber serving as the outlet port.
    Type: Grant
    Filed: May 20, 1998
    Date of Patent: December 5, 2000
    Assignee: Institute Guilfoyle
    Inventors: John B. Desjardins, William W. Seifert, Robert S. Wenstrup, Vernon C. Westcott
  • Calibration template for computed radiography
    Patent number: 5544157
    Abstract: A calibration template for standardizing images taken with X-ray radiation includes an elongated parallelepiped box of dimensions of at least about 14" (35.56 cm) by 17" (43.
    Type: Grant
    Filed: February 14, 1995
    Date of Patent: August 6, 1996
    Assignee: Boston Test Tool Company
    Inventors: Robert S. Wenstrup, Joseph J. Fieno