Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4264570 | Method of producing magnesium sulphate | Oleg D. Kashkarov, Jury S. Safrygin, Alexandr V. Muraviev, Nina K. Andreeva | 1981-04-28 |
| 4246019 | Method of producing a complex mineral fertilizer | Jury S. Safrygin, Alexandr V. Muraviev, Nina K. Andreeva, Valery A. Zykov | 1981-01-20 |
| 4240818 | Procedure for preparing nitrogen-potassium fertilizer | Jury S. Safrygin, Alexandr V. Muraviev, Nina K. Andreeva | 1980-12-23 |
| 4215100 | Method of producing potassium sulfate | Vera A. Ostanina, Jury S. Safrygin, Tatyana I. Rutkovskaya, Nina V. Antonova, Rakhil E. Naginskaya | 1980-07-29 |