P

Inventor

ZHANG QINGHAI

US8 patents
⚠️ This page may combine multiple inventors who share the name “ZHANG QINGHAI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

TIANJIN QINGQUAN PET PRODUCTS CO LTD

5 patents

UNIV QINGDAO TECHNOLOGY

1 patent

SHANDONG BRIGHTMAN ENERGYTECHNOLOGY CO LTD

1 patent

ZHANG QINGHAI

1 patent