Patents by Inventor Walter R. Fillippone

Walter R. Fillippone 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).

  • Geophone apparatus and a seismic exploration method
    Patent number: 4813029
    Abstract: A geophone apparatus capable of detecting both horizontal shear and compressional seismic waves has a pair of geophones mounted such that, when in use, said geophones will be inclined at an angle of about 45.degree. in opposite directions from vertical. The output signals generated by the two geophones are summed to yield a compressional wave trace and/or are subtracted one from the other to yield a horizontal shear wave trace.
    Type: Grant
    Filed: August 5, 1981
    Date of Patent: March 14, 1989
    Assignee: Union Oil Company of California
    Inventors: Otis G. Erich, Jr., Walter R. Fillippone