Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4257841 | Stabilizing and supporting apparatus for float zone refined semiconductor crystal rod | John M. Ross, Kedar P. Gupta, Horst Krämer | 1981-03-24 |
| 4201746 | Apparatus for zone refining | Bobbie D. Stone, William F. Tucker, Kedar P. Gupta | 1980-05-06 |