国家/地区 中国（2）
IPC部 C（2）
IPC大类 C07（2） C09（2）
IPC小类 C07D（2）
IPC
发明人 ZHANG Y（2）
公开年 2022（2）
申请年
专利权人

Electrochromic material useful in electrochromic device, comprises electrochromic molecules (comprising electroacid structural unit i.e. spiro(2,11-dihydropyrrolo(3,4-a)phenoxazine-3,10'-9H-anthracene)-1-one derivatives, and dye structural unit) and electrolytes.

ZHANG X, YAO Z, ZHANG Y

Pod-type degradable temporary plugging ball useful in temporary plugging treatment of oil and gas wells in fracturing system, comprises degradable outer shell (comprising e.g. polymerized product of glycolide, lactide, polybutylene succinate prepolymer) and inner core.

LI H, ZHANG Y, SHANG L, HUANG B, LIU J, WANG Y, YANG X, JIANG Q