Inventor

LI JIAFEN

CN2 patents

⚠️ This page may combine multiple inventors who share the name “LI JIAFEN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

YANG XIAOHUA

1 patent

US8623791B2Jan 7, 2014

Copolymer and preparation method and application thereof

YANG XIAOHUA4 citations62

CHINA PETROLEUM & CHEMICAL

1 patent

US7323434B2Jan 29, 2008

Electropositive production well treating fluid and method of preparing the same

CHINA PETROLEUM & CHEMICAL4 citations51