ALEXANDRIA, Va., Sept. 17 -- United States Patent no. 12,414,708, issued on Sept. 16, was assigned to California Institute of Technology (Pasadena, Calif.).

"Eddy current damping respiratory waveform and volume sensor" was invented by Shane S. Shahrestani (Yorba Linda, Calif.), Tzu-Chieh Chou (Pasadena, Calif.) and Yu-Chong Tai (Pasadena, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Medical diagnostic devices and related methods of use are described in which a sensor coil may be connected with a resistive, inductive, and capacitive (RCL) circuit including a power meter and a frequency counter, and the sensor may be positioned on a chest of a subject. The sensor apparatus may apply an alternating cur...