Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4833219 | Preparation of substituted polysulfones by metalation | John W. ApSimon, Oleh Kutowy | 1989-05-23 |
| 4797457 | Preparation of substituted polysulfones through ortho-metalated intermediates | John W. ApSimon, Oleh Kutowy | 1989-01-10 |