Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7494525 | Calcium polysulfide, potassium polysulfide, calcium thiosulfate, and magnesium thiosulfate as urease inhibitors | Michael Massoud Hojjatie, Thomas David Fairweather, Constance Lynn Frank Lockhart | 2009-02-24 |
| 5019149 | Fertilizer and method for foliar treatment of iron-deficient plants | Edwin F. Hawkins, James E. Sansing | 1991-05-28 |
| 4776879 | Water insoluble triazone fertilizer and methods of making and use | Edwin F. Hawkins | 1988-10-11 |
| 4583319 | Method of and apparatus for spraying foliar composition | Robert L. Wolff, Dennis G. Watson | 1986-04-22 |