Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4351766 | Production of penicillins | Derek Walker, Chester Sapino, David A. Johnson | 1982-09-28 |
| 4316016 | Cephalosporin intermediates | Derek Walker, Chester Sapino, David A. Johnson | 1982-02-16 |
| 4316017 | Cephalosporin intermediates | Derek Walker, Chester Sapino, David A. Johnson | 1982-02-16 |
| 4310458 | Production of penicillins | Derek Walker, Chester Sapino, David A. Johnson | 1982-01-12 |
| 4278600 | Production of penicillins | Derek Walker, Chester Sapino, David A. Johnson | 1981-07-14 |
| 4240960 | Trimethylsilyl substituted penicillins | Derek Walker, Chester Sapino, David A. Johnson | 1980-12-23 |
| 4223135 | Production of cephalosporins | Derek Walker, Chester Sapino, David A. Johnson | 1980-09-16 |