ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,458,758, issued on Nov. 4, was assigned to Sanofi (Paris).

"Drug delivery device and assembly method for a drug delivery device" was invented by James Alexander Senior (Warwick, Great Britain), Harry Robert Lester (Warwick, Great Britain), David Aubrey Plumptre (Warwick, Great Britain) and Robert Veasey (Warwick, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "A drug delivery device comprising a housing with an opening, a piston rod having a proximal end and a distal end, and a bearing. The piston rod is adapted to engage the opening for guiding the piston rod during a movement of the piston rod relative to the housing. The piston rod also i...