Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877768 | Processes for the preparation of copper oxide superconductors | — | 1989-10-31 |
| 4876240 | Processes for the preparation of copper oxide superconductors | — | 1989-10-24 |
| 4810611 | Developer compositions with coated carrier particles having incorporated therein colorless additives | Paul C. Julien | 1989-03-07 |