Inventor

WEI WEIZHONG

CN2 patents

Patents

2 patents

US11558985B2Jan 17, 2023

Frequency converter

CHINA UNIV OF PETROLEUM BLUE SKY QINGDAO PETROLEUM TECHNOLOGY CO LTD0 citations38

US11629084B2Apr 18, 2023

Method for treating an oily solid waste sludge

CHINA UNIV OF PETROLEUM BLUE SKY QINGDAO PETROLEUM TECHNOLOGY CO LTD0 citations37