Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4868324 | Purification of diphenyl phthalates | Ellen A. Langford, Edward E. Quick | 1989-09-19 |
| 4803295 | Purification of diphenyl phthalates | Robert Kunkel | 1989-02-07 |
| 4767881 | Synthesis of diphenyl phthlates | — | 1988-08-30 |
| 4766236 | Purification of diphenyl phthalates | Ellen A. Langford | 1988-08-23 |