国家/地区 中国（3）
IPC部 C（3）
IPC大类 C07（3） C08（2）
IPC小类 C07D（3）
IPC
发明人 WANG Y（3）
公开年 2022（3）
申请年 2021（2） 
专利权人

Lubricating oil additive useful in field of automobile, railway, aviation, ship, military equipment, electric power, metallurgy, cement, oil field, paper making and coal comprises carbon point and rare earth metal complex.

WANG Q, WANG 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

Semicrystalline poly(aryl ether ketone) copolymer compositions are used in high pressure and high temperature environment, comprises copolymer having two separate recurring units, first recurring unit and second recurring unit.

WANG Y