Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4824947 | Substituted phthalocyanine | — | 1989-04-25 |
| 4824948 | Substituted phthalocyanine | Nigel Hughes, Donald M. Gunn | 1989-04-25 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4824947 | Substituted phthalocyanine | — | 1989-04-25 |
| 4824948 | Substituted phthalocyanine | Nigel Hughes, Donald M. Gunn | 1989-04-25 |