ALEXANDRIA, Va., March 5 -- United States Patent no. 12,241,594, issued on March 4, was assigned to Applied Materials Inc. (Santa Clara, Calif.).
"Constant headspace ampoule" was invented by David Marquardt (Scottsdale, Ariz.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Ampoules including a housing, a lid and a floating structure are described. The floating structure includes a float with a volume determined to displace a predetermined volume of liquid within the ampoule. An outlet channel extends from the top surface of the float. A baffle is positioned along the length of the outlet channel and creates a saturation zone between the baffle and the float."
The patent was filed on Aug. 30, 2022, under Appl...