Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4669087 | Control system for electroslag remelting | Ivanka A. Rasheva, Lyudmil K. Valkov, Stoyan M. Stoyanov | 1987-05-26 |
| 4616808 | Apparatus for the treatment and casting of metals and alloys in a closed space | Ivan Dimov Nikolov, by Vassilka P. Dimova, heir, Dobromir I. Dimov, heir, Petar I. Dimov, heir, Marin I. Marinov +2 more | 1986-10-14 |
| 4476565 | Method and system for control of the electroslag remelting | Lyudmil K. Valkov, Ivanka A. Rasheva, Stoyan M. Stoyanov, Danail K. Kossev, Yordan G. Lambev | 1984-10-09 |
| 4307263 | Device for balancing the forces acting on the electrode in electro-slag furnaces | Ivanka A. Rasheva, Konstantin S. Milchev, Yordan G. Lambev | 1981-12-22 |
| 4253868 | Apparatus for nitriding metal materials and ferroalloys under pressure | Ivan Dimov Nikolov, Iliya G. Chorbov, Ivan M. Peychev, Hristo G. Penchev, Marin I. Marinov +1 more | 1981-03-03 |