ALEXANDRIA, Va., June 18 -- United States Patent no. 12,326,421, issued on June 10, was assigned to DEKA Products LP (Manchester, N.H.).

"System, method, and apparatus for detecting air in a fluid line using active rectification" was invented by Michael J. Wilt (Windham, N.H.) and Jason M. Sachs (Chandler, Ariz.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A circuit for detecting air, a related system, and a related method are provided. The circuit for detecting air includes a receiver connection and an air-detection circuit. The receiver connection is configured to provide a receiver signal. The air-detection circuit is in operative communication with the receiver connection to process the receiver signal...