Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4592904 | Process for producing columbium oxyfluoride | Edwin J. Bielecki, Umedray L. Sheth | 1986-06-03 |
| 4518570 | Process for separating antimony from columbium solutions | Harvey Stewart | 1985-05-21 |