Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4876305 | Oxidation resistant compositions for use with rare earth magnets | — | 1989-10-24 |
| 4869964 | Oxidation resistant compositions for use with rare earth magnets | — | 1989-09-26 |
| 4816303 | Process for inhibiting corrosion of metal and corrosion-inhibiting layer use therein | William J. Kroenke, John Standish | 1989-03-28 |