ALEXANDRIA, Va., May 19 -- United States Patent no. 12,629,306, issued on May 19, was assigned to MEIKO Maschinenbau GmbH & Co. KG (Offenburg, Germany).
"Composition for production of a test soil for assessment of the cleaning action of cleaning devices and use thereof" was invented by Martin Hofer (Durbach, Germany) and Marijan Simundic (Ohlsbach, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A composition may include, in dry form: (a) nigrosin; (b) wheat flour; and (c) whole egg. Such compositions may be used for production of test soil for assessment of the cleaning action of cleaning devices. Methods of producing a test soil for assessment of the cleaning action of cleaning devices for cleaning ...