Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4500398 | Production of lead from sulfides | Ernest R. Cole, Jr., Agnes Yena Lee | 1985-02-19 |
| 4272340 | Electrowinning of lead from H.sub.2 SiF.sub.6 solution | Ernest R. Cole, Jr., Agnes Yena Lee | 1981-06-09 |