Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4872922 | Method and apparatus for the ion implantation of spherical surfaces | Stephen N. Bunker | 1989-10-10 |
| 4855026 | Sputter enhanced ion implantation process | — | 1989-08-08 |
| 4835390 | Apparatus and method for measuring bulk density using positron scattering and annihilation | Charles C. Blatchley, Robert H. Leyse, John R. Scheibel | 1989-05-30 |