P

Inventor

ZHANG KEWEI

CA27 patents
⚠️ This page may combine multiple inventors who share the name “ZHANG KEWEI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

TRICAN WELL SERVICE LTD

11 patents

ZHANG KEWEI

7 patents

BJ SERVICES COMPANY CANADA

2 patents

(unassigned)

1 patent

BJ SERVICES CO

1 patent

LIU CHANG-JUN

1 patent

CHENG ZHONGYANG

1 patent

UNIV CORNELL

1 patent

UNIV SHANGHAI

1 patent

QINGDAO UNIV CHINA

1 patent