QZ

Qian Qiu Zhao

EA E.I. Du Pont De Nemours And: 1 patents #4,343 of 8,010Top 55%
📍 Landenberg, PA: #114 of 238 inventorsTop 50%
🗺 Pennsylvania: #30,495 of 74,527 inventorsTop 45%
Overall (All Time): #2,175,520 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
7152819 High pressure media mill William Ford, Erik Henricus Gommeren 2006-12-26
6036999 Method of preparing grinding media consisting essentially of sintered TiO.sub.2 particles David A. Zimmerman 2000-03-14