Patents by Inventor Jeffrey K. Leppert

Jeffrey K. Leppert 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).

  • Self-aligning block
    Patent number: 5987840
    Abstract: A self-aligning block that includes a body that has at least one mortise therein, and at least one tenon that extends from the body. A respective tenon of one self-aligning block is received in a respective mortise in the bottom surface of the body of a next higher staggered the self-aligning block of one wall to a height that provides an automatic mortar space between the one self-aligning block and the next higher staggered self-aligning block from course to course of the one wall.
    Type: Grant
    Filed: May 28, 1998
    Date of Patent: November 23, 1999
    Inventor: Jeffrey K. Leppert