Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| H676 | Production of urea fluorosilicate | — | 1989-09-05 |
| 4308048 | Production of ammonium potassium polyphosphates | John F. McCullough, Leland L. Frederick | 1981-12-29 |
| 4239739 | Manufacture of purified diammonium phosphate | John F. McCullough | 1980-12-16 |
| T996001 | Production of ammonium potassium polyphosphates | John F. McCullough, Leland L. Frederick | 1980-07-01 |