Issued Patents 1997
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5693749 | Fractionation of phenol formaldehyde condensate and photoresist compositions produced therefrom | Daniel P. Aubin, Dinesh N. Khanna, Sunit S. Dixit | 1997-12-02 |
| 5688893 | Method of using a Lewis base to control molecular weight of novolak resins | Daniel P. Aubin, Dana L. Durham, Ralph R. Dammel | 1997-11-18 |
| 5686561 | Metal ion reduction in novolak resin solution using an anion exchange resin | — | 1997-11-11 |
| 5665517 | Acidic ion exchange resin as a catalyst to synthesize a novolak resin and photoresist composition therefrom | Daniel P. Aubin, Elaine G. Kokinda, Dana L. Durham | 1997-09-09 |
| 5656413 | Low metal ion containing 4,4'-[1-[4-[1-(4-Hydroxyphenyl)-1-methylethyl]phenyl]ethylidene]bisphe nol and photoresist compositions therefrom | Daniel P. Aubin | 1997-08-12 |
| 5624789 | Metal ion reduction in top anti-reflective coatings for photoresisis | Dana L. Durham | 1997-04-29 |
| 5614352 | Metal ion reduction in novolak resins solution in PGMEA by chelating ion exchange resin | — | 1997-03-25 |
| 5614349 | Using a Lewis base to control molecular weight of novolak resins | Daniel P. Aubin, Dana L. Durham, Ralph R. Dammel | 1997-03-25 |
| 5594098 | Metal ion reduction in novolak resins and photoresists | Dana L. Durham | 1997-01-14 |