ALEXANDRIA, Va., Nov. 3 -- United States Patent no. 12,780,474, issued on Nov. 3, was assigned to Elopak AS and Shikoku Kakoki Co. Ltd. (Spikkestad, Norway) and Shikoku Kakoki Co. Ltd. (Tokushima, Japan).
"Hot-air extraction duct" was invented by Lars Aksel Thingelstad (Drammen, Norway).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a filling machine and a method handling hot air supplied at a station within the filling machine. The filling machine provides a working chamber with a clean zone for filling containers while the containers are conveyed through the working chamber. The clean zone is provided by introducing HEPA-filtered air into the working chamber through fluid in...