In the early 1950s, Frohring received patents for Frohring Cement Mixers, a line of compact, portable mixers than can be moved out to a field and operated by hand, electric motor, gasoline motor or tractor motor.  In 1953, Frohring patented a neurological research device known as a biothesiometer, used to determine a patient's sensitivity to vibration. Other patents include a formula for hypo-alergic milk, a process of making liquid malted milk, and a method for determining vitamin A deficiency, and a method for extracting carotene.
He was made an honorary doctor of science by McKinley-Roosevelt College in Chicago, Illinois.