HC

Hsing H. Chen

IBM: 3 patents #26,272 of 70,183Top 40%
Overall (All Time): #1,622,134 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
6221269 Method of etching molybdenum metal from substrates Krishna G. Sachdev, Umar M. Ahmad, Lawrence D. David, Charles H. Perry, Donald R. Wall 2001-04-24
5744214 Corrosion resistant molybdenum mask Peter Berasi 1998-04-28
5518131 Etching molydbenum with ferric sulfate and ferric ammonium sulfate Lawrence D. David, Derek B. Harris 1996-05-21