US Patent Issued to Dosen-Zentrale Zweigniederlassung der Kolner Blechwarenfabrik Zuchner on Dec. 23 for "Vacuum stopper and assembly of stopper and container" (Dutch Inventors)

ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,503,281, issued on Dec. 23, was assigned to Dosen-Zentrale Zweigniederlassung der Kolner Blechwarenfabrik Zuchner GmbH (Hilden, Germany).

"Vacuum stopper and assembly of stopper and container" was invented by Dalibor Borjanin (Nieuwerkerk aan den IJssel, Netherlands), Robert Franciscus Van Der Hulst (Leiden, Netherlands) and Rui Medeiros Santos (Rotterdam, Netherlands).

According to the abstract* released by the U.S. Patent & Trademark Office: "Vacuum stopper and assembly of stopper and container. There is disclosed a vacuum stopper (1) configured to be positioned into a neck (9) the neck of the bottle, the stopper comprising: a resilient shoulder (4) provided at an upper end of the ...