When 4-point resistance tests were performed on a sample pellet, multiple plots displayed a sharp resistive transition near 258 Kelvin (-15C, 5F), as shown at page top. This is the first observation of superconductivity over 0F. While four degrees Kelvin is not a huge increase in high Tc, this discovery again validates planar weight disparity as a prolific Tc enhancement tool. It also illustrates the challenges in trying to improve superconductor performance as we approach room temperature. A meissner transition was observed near 260K in this material.
Some of Joe's earlier work was confirmed and published in journals by researchers in the middle east.