Patents by Inventor John Van Nierop

John Van Nierop 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).

  • High resolution non-contact interior profilometer
    Patent number: 6469794
    Abstract: Apparatus and method for inspecting the interior surfaces of devices such as vessels having a single entry port. Laser energy is introduced into a device under test and to a time delay. Light reflected from the interior surfaces of the device under test is introduced into one end of a dye-cell and the time-delayed light is introduced into the other end. The amount of time delay is adjusted to produce two-photon fluorescence in the dye-cell so that the amount of time delay is representative of the interior surfaces of the device under test.
    Type: Grant
    Filed: June 28, 2001
    Date of Patent: October 22, 2002
    Inventors: Martin S. Piltch, R. Alan Patterson, Gerald W. Leeches, John Van Nierop, John J. Teti, Jr.
  • High resolution non-contact interior profilometer
    Patent number: 6229617
    Abstract: Apparatus and method for inspecting the interior surfaces of devices such as vessels having a single entry port. Laser energy is launched into the vessel, and the light reflected from the interior surfaces is interfered with reference laser energy to produce an interference pattern. This interference pattern is analyzed to reveal information about the condition of the interior surfaces of the device inspected.
    Type: Grant
    Filed: February 4, 1999
    Date of Patent: May 8, 2001
    Assignee: The Regents of the University of California
    Inventors: Martin S. Piltch, R. Alan Patterson, Gerald W. Leeches, John Van Nierop, John J. Teti