Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4750187 | Graphitic electrode with protective coating | Maksim O. Tzonevski | 1988-06-07 |
| 4462878 | Method of treating and refining liquid metal alloys by direct current electric arc heating | Peter H. Savov, Nikolay G. Bakalov, Alexander Y. Valchev, Boris Y. Drakaliiski, Stefan T. Bagarov +5 more | 1984-07-31 |
| 4246023 | Method and apparatus for the refining of iron-based melts | Peter H. Savov, Alexander Y. Valchev, Nikola A. Lingorski | 1981-01-20 |
| 4226207 | Apparatus for applying protective coatings to graphite bodies | Ivan V. Genev, Mihail S. Konstantinov, Alexander Y. Valchev | 1980-10-07 |
| 4200452 | Method for the refining of iron-based melts | Peter H. Savov, Alexander Y. Valchev, Nikola A. Lingorski | 1980-04-29 |