ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,383,176, issued on Aug. 12, was assigned to Sarstedt AG & Co. KG (Numbrecht, Germany).
"Sealing cap for sealing a sample tube for receiving a liquid" was invented by Mark Weinstock (Helmenzen, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A sealing cap seals a sample tube for receiving a liquid, in particular blood. The sealing cap includes a cavity delimited by a membrane and a base having an opening that can be sealed by a non-return valve. In order to reduce the volume of liquid which, during centrifugation of the sample tube sealed by the sealing cap, flows out of the sealing cap through the then open opening into the sample tube, the cavit...