US Patent Issued to PAVESTONE on May 27 for "Apparatus for making a masonry block with a roughened surface" (Texas Inventor)

ALEXANDRIA, Va., June 17 -- United States Patent no. 12,311,575, issued on May 27, was assigned to PAVESTONE LLC (Atlanta).

"Apparatus for making a masonry block with a roughened surface" was invented by William H. Karau (Southlake, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "An apparatus comprising a substantially smooth internal mold surface forming a cavity and one or more roughened sections of the substantially smooth internal mold surface having a plurality of irregular grooves, wherein each roughened section is inclined with a wider base and a narrower top."

The patent was filed on Aug. 12, 2019, under Application No. 16/538,466.

*For further information, including images, charts and tables,...