ALEXANDRIA, Va., March 31 -- United States Patent no. 12,593,393, issued on March 31.

"Self-contained ballast driver for retrofitting a lighting system with LED lights" was invented by Luke C. McKee (Oskaloosa, Iowa), Chris P. Lickiss (Newton, Iowa), Philip D. Hol (New Sharon, Iowa), Aric D. Klyn (Pella, Iowa), David J. Van Ee (Oskaloosa, Iowa) and Kenneth G. Lewis Jr. (New Sharon, Iowa).

According to the abstract* released by the U.S. Patent & Trademark Office: "An apparatus for retrofitting a HID lighting system includes using existing components of previously installed HID lighting systems such as its ballasts while replacing some capacitors to adjust the power supplied to a retrofit LED luminaire. Unused ballast drivers are removed, a...