Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4808391 | Oxidation-reduction process for enhancing the color of and stabilizing wet process phosphoric acid | David D. Leavitt, Ken Kranz, Norman L. Stewart, Jr. | 1989-02-28 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4808391 | Oxidation-reduction process for enhancing the color of and stabilizing wet process phosphoric acid | David D. Leavitt, Ken Kranz, Norman L. Stewart, Jr. | 1989-02-28 |