ALEXANDRIA, Va., July 28 -- United States Patent no. 12,691,642, issued on July 28, was assigned to Fresenius Kabi Deutschland GmbH (Bad Homburg, Germany).
"Pulse welding method and welding tool for pulse welding for a medical pack formed as a bag" was invented by Gerald Wegner (Friedberg, Germany) and Jom Wittorf (Friedberg, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a welding tool and a method for pulse welding films of plastic for medical packs formed as bags. The invention generally provides for the film material that has been plastified during welding, and is consequently free-flowing, to be specifically displaced by increasing the sealing surface area. The displaced...