ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,533,465, issued on Jan. 27, was assigned to SANOFI (Paris).

"Chemical wake-up mechanism for active electronics in pen injectors" was invented by Michael Schabbach (Frankfurt am Main, Germany), Johannes Alpers (Frankfurt am Main, Germany), Ganesh Appusamy Vedhachalam (Frankfurt am Main, Germany), Jorg Bigalke (Frankfurt am Main, Germany), Martin Rausch (Frankfurt am Main, Germany) and Anna Baccaro (Frankfurt am Main, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "Implementations of the present disclosure are directed to conserving energy of an injection device that includes an energy source configured to power an electronic component, a priming c...