ALEXANDRIA, Va., April 2 -- United States Patent no. 12,263,163, issued on April 1, was assigned to Kronos Bio Inc. (San Mateo, Calif.).

"Crystalline succinate salt of 6-(6-aminopyrazin-2-yl)-n-(4-(4-(oxetan-3-yl)piperazin-1-yl)phenyl)imidazo[1,2-apyrazin-8-amine as a Syk inhibitor" was invented by Peter A. Blomgren (Issaquah, Wash.), Kevin S. Currie (North Bend, Wash.), Jeffrey E. Kropf (Issaquah, Wash.), Seung H. Lee (Sammamish, Wash.), Jennifer R. Lo (Seattle), Scott A. Mitchell (Kenmore, Wash.), Aaron C. Schmitt (Hamden, Conn.), Jin-Ming Xiong (Bel Air, Md.), Jianjun Xu (Bellevue, Wash.), Sundaramoorthi Swaminathan (Burlingame, Calif.) and Zhongdong Zhao (Bellevue, Wash.).

According to the abstract* released by the U.S. Patent & Trade...