Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4965116 | Method for separation of cobalt from nickel | Michael J. Miller | 1990-10-23 |
| 4804407 | Method for recovering cobalt from hexammine cobaltic (111) solutions | Clarence D. Vanderpool, Michael J. Miller | 1989-02-14 |
| 4741886 | Process for recovering tungsten from tungsten bearing material containing arsenic | Clarence D. Vanderpool, Martin B. MacInnis | 1988-05-03 |
| 4690710 | Process for producing cobalt metal powder | Clarence D. Vanderpool, Michael J. Miller, Richard G. W. Gingerich | 1987-09-01 |
| 4626425 | Recovery of tungsten from ammoniacal solutions | Clarence D. Vanderpool, Martin B. MacInnis, Michael J. Miller | 1986-12-02 |
| 4624844 | Process for producing ammonium paratungstate | Clarence D. Vanderpool, Martin B. MacInnis, Michael J. Miller | 1986-11-25 |
| 4623534 | Method for producing ammonium paratungstate | Clarence D. Vanderpool, Michael J. Miller | 1986-11-18 |
| 4612039 | Production of pure cobalt metal powder | Clarence D. Vanderpool, Michael J. Miller | 1986-09-16 |
| 4608084 | Recovery of cobalt and chromium | Michael J. Miller, Clarence D. Vanderpool, Martin B. MacInnis | 1986-08-26 |
| 4608235 | Recovery of cobalt | Clarence D. Vanderpool, Richard G. W. Gingerich | 1986-08-26 |
| 4594230 | Recovery of cobalt | Michael J. Miller, Clarence D. Vanderpool | 1986-06-10 |
| 4552729 | Method for removing tin from sodium tungstate solution | Michael J. Miller, Martin Vogt | 1985-11-12 |
| 4454098 | Process for reclaiming tungsten from a hazardous waste | Clarence D. Vanderpool, Michael J. Miller, Martin B. MacInnis | 1984-06-12 |
| 4452633 | Method for producing cobalt metal powder | Michael J. Miller, Clarence D. Vanderpool, Eric F. Husted | 1984-06-05 |
| 4448755 | Method for removal of tin from ammonium tungstates | Michael J. Miller, Martin B. MacInnis, James N. Christini, Martin Vogt | 1984-05-15 |
| 4432950 | Recovery of refractory metal values from scrap cemented carbide | Clarence D. Vanderpool, Richard G. Warmington | 1984-02-21 |
| 4395278 | Method for producing cobalt metal powder | Clarence D. Vanderpool, Richard G. W. Gingerich | 1983-07-26 |
| 4381937 | Method for producing cobalt metal powder | Richard G. W. Gingerich, Clarence D. Vanderpool, Martin B. MacInnis | 1983-05-03 |
| 4348224 | Method for producing cobalt metal powder | Richard G. W. Gingerich, Clarence D. Vanderpool, Joseph E. Ritsko | 1982-09-07 |
| 4329169 | Method for producing cobalt metal powder | Richard G. W. Gingerich | 1982-05-11 |