ALEXANDRIA, Va., June 4 -- United States Patent no. RE50,447, issued on June 3, was assigned to THE CURATORS OF THE UNIVERSITY OF MISSOURI (Columbia, Mo.).

"System and method for in-situ measurement of viscoelastic material properties using continuous-wave ultrasound" was invented by Jinglu Tan (Columbia, Mo.) and Nilesh Salvi (Columbia, Mo.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A system and method for measuring one or more viscoelastic properties of a material under measurement is disclosed. The system includes an emitter-observer transducer pair separated by the material. A signal processing assembly is operable to (i) apply a plurality of excitation signals to the emitter transducer, wherein each...