Patents by Inventor Frederick Van der Bas

Frederick Van der Bas 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).

  • Method and apparatus for reducing a skin effect in a downhole environment
    Publication number: 20070256828
    Abstract: A method for reducing a skin effect in a downhole environment is provided, including the step of radiating vibrational waves at a wellbore wall such that the vibrational waves have at least one direction of greatest vibrational energy transfer directed toward the wall, thereby reducing the skin effect. An apparatus for reducing a skin effect in a downhole environment is also provided. The apparatus includes at least one vibrational wave source having at least one direction of greatest vibrational energy transfer, and a means for positioning the vibrational wave source proximate a wellbore wall.
    Type: Application
    Filed: September 29, 2004
    Publication date: November 8, 2007
    Inventors: James Birchak, Sau-Wai Wong, James Estep, William Trainor, Wei Han, Wes Ritter, Kwang Yoo, Lyle Lehman, James Venditto, Harry Smith, Diederik van Batenburg, Ali Mese, Jeroen Groenenboom, Frederick Van der Bas, Pedro Zuiderwijk, Peter van der Sman