ALEXANDRIA, Va., June 16 -- United States Patent no. 12,304,913, issued on May 20, was assigned to UBE INDUSTRIES LTD. (Ube, Japan).

"Dihydropyrrolopyrazole derivative" was invented by Noriaki Iwase (Ube, Japan), Yasuhiro Aga (Ube, Japan), Shigeyuki Kono (Ube, Japan) and Tomio Kimura (Ube, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention provides a compound represented by general formula (I) or a pharmacologically acceptable salt thereof. [In the formula, the two Rs each independently represents a C1-3 alkyl group, or are bonded together to form a C2-5 alkylene group, A represents a C6-10 aryl group (which may be a substituted C6-10 aryl group), Z represents a hydrogen atom or a C1-...