US Patent Issued to Vacuum Barrier on July 21 for "Controlled dosing of liquid cryogen" (Massachusetts Inventors)

ALEXANDRIA, Va., July 21 -- United States Patent no. 12,687,260, issued on July 21, was assigned to Vacuum Barrier Corp. (Woburn, Mass.).

"Controlled dosing of liquid cryogen" was invented by Erik Robert Showers (Boxford, Mass.), John Walker Ross (Ipswich, Mass.) and David Tucker (Groveland, Mass.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An aseptic liquid cryogen dosing head has a liquid cryogen reservoir in communication with a dosing outlet. An electromagnetic actuator is attached to an upper end of a dosing valve stem and is operable to move the dosing valve stem to open and close the dosing outlet. An air-tight seal extends about the dosing valve stem and separates the liquid cryogen reservoir from...