ALEXANDRIA, Va., March 19 -- United States Patent no. 12,252,460, issued on March 18, was assigned to Alzchem Trostberg GmbH (Trostberg, Germany).

"Process for the preparation of a metastable crystal modification of n-(aminoiminomethyl)-2-aminoacetic acid (III)" was invented by Thomas Guthner (Trostberg, Germany), Franz Thalhammer (Trostberg, Germany) and Jurgen Sans (Trostberg, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a novel crystal modification of N-(aminoiminomethyl)-2-aminoacetic acid, crystal mixtures, and a process for preparing said crystal modification and said crystal mixtures."

The patent was filed on June 25, 2020, under Application No. 17/621,023....