Patents by Inventor Donald A. Neeper

Donald A. Neeper 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).

  • Ventilation of porous media
    Patent number: 5288169
    Abstract: Methods for distributing gases throughout the interstices of porous materials and removing volatile substances from the interstices of porous materials. Continuous oscillation of pressures and flows results in increased penetration of the interstices by flowing gases and increased transport of gaseous components out of the interstices. The invention is particularly useful in soil vapor extraction.
    Type: Grant
    Filed: January 31, 1992
    Date of Patent: February 22, 1994
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventor: Donald A. Neeper