Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5612164 | Positive photoresist composition comprising a mixed ester of trishydroxyphenyl ethane and a mixed ester of trihydroxybenzophenone | Stanley A. Ficner, Ping-Hung Lu, Walter Spiess | 1997-03-18 |
| 5371169 | Novolak resin mixtures | Ping-Hung Lu, Dinesh N. Khanna, M. Dalil Rahman | 1994-12-06 |