Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 4368073 | Use of the sodium salt of 2-mercaptopyridine-N-oxide to separate gold from acidic solutions | Sigmund Breister | 1983-01-11 | $1,972,000 |
| 4269621 | Use of heavy metal chelates of 2-mercaptopyridine-N-oxide to separate selected precious metals from acidic solutions | Sigmund Breister | 1981-05-26 | $4,193,000 |