HC

Hwa Cheng

3M: 2 patents #84 of 952Top 9%
📍 Woodbury, MN: #21 of 109 inventorsTop 20%
🗺 Minnesota: #240 of 2,841 inventorsTop 9%
Overall (1994): #31,325 of 165,921Top 20%
2
Patents 1994

Issued Patents 1994

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5319219 Single quantum well II-VI laser diode without cladding James M. DePuydt, Michael A. Haase, Jun Qiu 1994-06-07
5291507 Blue-green laser diode Michael A. Haase, James M. DePuydt, Jun Qiu 1994-03-01