inventors

John B. Goodenough’s battery is still going strong—in more ways than one. The co-developer of the lithium-ion battery will turn 99 on July 25.

The patent, issued on May 11 to co-inventors Jason Diedering and Saravana Kumar at 4C Medical Technologies in Maple Grove, Minnesota, is for a medical device that positions (or repositions) an expandable prosthetic valve in a patient’s heart and can prolong lives.