P

Inventor

QIN XIAOFEI

US20 patents
⚠️ This page may combine multiple inventors who share the name “QIN XIAOFEI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

LIFENET HEALTH

9 patents

QIN XIAOFEI

3 patents

CHINA OILFIELD SERVICES LTD

3 patents

CHEN SILVIA S

2 patents

CHEN SILVIA SIHUI

1 patent

WOLFINBARGER LLOYD

1 patent

CHINA NAT OFFSHORE OIL CORP

1 patent