Patents by Inventor Michael E. Woolfford

Michael E. Woolfford 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).

  • Sound block
    Patent number: 4996813
    Abstract: A longitudinal sound block with eight sides or ten sides for use in concrete wall systems and reinforced wall systems. The sound block is used for sound barriers, privacy walls, and retaining walls. The front end of the sound block is a bullet-like nose. A rear end of the sound block receives the front end in a plane configuration or angled configuration.
    Type: Grant
    Filed: September 21, 1989
    Date of Patent: March 5, 1991
    Inventors: John C. Kliethermes, Jr., Michael E. Woolfford