ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,467,890, issued on Nov. 11, was assigned to AIM Systems GmbH (St. Ingbert, Germany).

"Apparatus and method for determining a material property of a test specimen in a test specimen region near the surface" was invented by Stefan Bottger (St. Ingbert, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to an apparatus (1; 1a; 1b; 1c) and a method for determining a material property of a test specimen (5; 5a; 5b; 5c) in a test specimen region (6; 6a; 6b; 6c) near the surface, said apparatus comprising at least one electromagnetic radiation source (2; 2a; 2b; 2c) for irradiating at least one surface region (4; 4a; 4b; 4c) of the te...