Inventor

SU CHANGMING

CN4 patents

⚠️ This page may combine multiple inventors who share the name “SU CHANGMING”. 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

CHINA PETROLEUM & CHEM CORP

1 patent

US10266617B2Apr 23, 2019

Cationic copolymer and use thereof in lost circulation additive

CHINA PETROLEUM & CHEM CORP1 citations48

LIAONING HUAYE ENERGY TECH SERVICE CO LTD

1 patent

US11898099B1Feb 13, 2024

Fracturing propping agent and preparation method of fracturing propping agent by using oil sludge produced in exploited of oil and gas field

LIAONING HUAYE ENERGY TECH SERVICE CO LTD0 citations44