Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4684399 | Tantalum powder process | Charles E. Mosheim | 1987-08-04 |
| 4663130 | Process for dissolving tantalum/columbium materials containing alkali metal impurities | Edwin J. Bielecki, Brian J. Higgins, Karl A. Romberger | 1987-05-05 |
| 4420469 | Pyrohydrolysis of columbium oxyfluoride to columbium oxide | Edwin J. Bielecki, Charles R. Nippert, Jr. | 1983-12-13 |