GENEVA, June 1 -- HEBEI NORMAL UNIVERSITY (20 South Second Ring Road EastShijiazhuang, Hebei 050000), 河北师范大学 (中国河北省石家庄市南二环东路20号), SHIJIAZHUANG CHIRALS CHEMICAL CO., LTD. (502, Building 2, Hongchang Science and Technology Park, No. 238 Changjiang Avenue, High Tech ZoneShijiazhuang, Hebei 050000), 石家庄手性化学有限公司 (中国河北省石家庄市高新区长江大道238号宏昌科技园2号楼502) filed a patent ...