Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888137 | Novel 1,4-bis(substituted-amino(-5,8-dihydroxyanthraquinones and leuco bases thereof | Keith C. Murdock | 1989-12-19 |
| 4820738 | 1,4-bis(substituted-amino)-5,8-dihydroxy-anthraquinones and leuco bases thereof | Keith C. Murdock | 1989-04-11 |