ALEXANDRIA, Va., Jan. 20 -- United States Patent no. 12,528,000, issued on Jan. 20, was assigned to RAWLINGS SPORTING GOODS COMPANY INC. (St. Louis).

"Ball bats and systems and methods for making ball bats" was invented by Marc Schmidt (Weldon Spring, Mo.) and Nicole McLeod (Augusta, Mo.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Representative embodiments of the present technology include a ball bat in which part of an inner surface of the bat wall has a contoured region including a plurality of radially inwardly curving portions and a plurality of radially outwardly curving portions. In some embodiments, the contoured region is asymmetric relative to a longitudinal center location of the contoured regi...