Rudolph J. Liedtke’s career began at the forefront of medical innovation, working alongside cardiovascular research pioneer Dr. Jan Nyboer at Wayne State University. Their groundbreaking work in bioelectrical impedance plethysmography became the foundation for Liedtke’s lifelong mission to transform health technology.

In the 1960s, he led cutting-edge automation and nuclear projects at Century Detroit, a division of Babcock & Wilcox—an engineering powerhouse rooted in Edison’s legacy of innovation. By 1971, he co-founded Controls Associates, where he developed advanced electronic systems for the automotive industry and engineered anti-fraud technologies for national coupon systems.

In 1979, Liedtke launched RJL Systems, introducing a patented formula for bioelectrical impedance analysis that set a new global standard for precision in body composition measurement. More than four decades later, RJL’s instruments are trusted by top institutions worldwide, with Liedtke continuing to drive breakthroughs in medicine, analytics, and water innovation.