RH

Robert L. Hsieh

UL Ultratech: 4 patents #19 of 110Top 20%
Overall (All Time): #1,220,868 of 4,157,543Top 30%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
8796053 Photolithographic LED fabrication using phase-shift mask Andrew M. Hawryluk, Warren W. Flack 2014-08-05
8781213 Optical alignment systems for forming LEDs having a rough surface Khiem Nguyen, Warren W. Flack, Andrew M. Hawryluk 2014-07-15
8323857 Phase-shift mask with assist phase regions Warren W. Flack 2012-12-04
8088633 Optical alignment methods for forming LEDs having a rough surface Khiem Nguyen, Warren W. Flack, Andrew M. Hawryluk 2012-01-03