ALEXANDRIA, Va., July 30 -- United States Patent no. 12,372,500, issued on July 29, was assigned to Dionex Softron GmbH (Germering, Germany).

"Sample injector for liquid chromatography, particularly for high performance liquid chromatography" was invented by Hermann Hochgraeber (Offenberg-Neuhausen, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A sample injection method for liquid chromatography is performed with an injection valve having a waste port, two sample loop ports, and two high-pressure ports. One high-pressure port can be connected to a pump and the other high-pressure port can be connected to a chromatography column. A sample loop is connected to one of the sample loop ports on one end a...