Patents by Inventor John C. Kliethermes, Jr.

John C. Kliethermes, Jr. 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).

  • Retaining wall block and system
    Patent number: 5537796
    Abstract: A construction block is disclosed having integral pins upstanding from its top surface and C-shaped slots adjacent to the pins extending through the block between its top and bottom surfaces. The block interlocks with other like blocks with the pins of the block being adjustably received in corresponding slots of the other like blocks. The slots are configured so that the blocks may be adjusted relative to each other to form both a straight wall and a set back wall.
    Type: Grant
    Filed: February 22, 1993
    Date of Patent: July 23, 1996
    Inventor: John C. Kliethermes, Jr.
  • 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