Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4963336 | Purification of APT | Leo W. Beckstead, Tom C. Kearns | 1990-10-16 |
| 4917726 | Chromium recovery process | Leo W. Beckstead, Charles J. Kucera, Jr., Pandelis N. Papafingos | 1990-04-17 |
| 4900522 | Separation of nickel and cobalt from sulfate solutions by solvent extraction | Leo W. Beckstead | 1990-02-13 |
| 4810303 | Production of hexagonal cadmium sulfide pigment | Guy W. Lussiez, Leo W. Beckstead | 1989-03-07 |
| 4761177 | Production of cobalt and nickel powder | Leo W. Beckstead, Luther R. Tinnin | 1988-08-02 |
| 4758266 | Production of high surface area nickel powder | — | 1988-07-19 |
| 4600435 | Solvent extraction of cobalt (II) from sulfate solutions with cobalt extractants | Ben W. Wiegers, John D. Bruno, Helen S. Leaver | 1986-07-15 |
| 4545814 | Production of cobalt and nickel powder | Mark W. Cooperrider | 1985-10-08 |
| 4544541 | Removal of hexavalent selenium from nickel, cobalt or copper sulfate solution | Ben W. Wiegers, Dale K. Huggins, Edward I. Wiewiorowski | 1985-10-01 |