Issued Patents 1994
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5348712 | Use of carbonates in metal ion extraction | Edward T. Marquis | 1994-09-20 |
| 5324838 | Bicyclo[4.3.0]1,4,7-triazanon-4-ene-one useful in the extraction of precious metals | George P. Speranza | 1994-06-28 |
| 5298618 | Macrocyclic oxamides | George P. Speranza, Donald H. Champion | 1994-03-29 |