Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4917122 | Compositions for use in the production of integrated circuits and method for its preparation and use | David J. Lapham | 1990-04-17 |
| 4885106 | Storable semiconductor cleaning solution containing permonosulphuric acid | David J. Lapham | 1989-12-05 |