Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5624653 | Method for producing sulphur trioxide | Georgy Grozev, Christo Sapundjiev, Dimitry Elenkov, Dimitry Dimitrov, Nikola Dobrev | 1997-04-29 |
| 4966624 | Method and apparatus for electric refining of lead | Lyuben R. Starev, Elieser P. Illel, Georgi N. Korudanov | 1990-10-30 |
| 4264405 | Apparatus for the mechanical separation of cathode metal from a matrix | Peter I. Petrov, Kiril G. Harisanov, Georgi N. Korudanov, Georgi I. Abrashev, Lyuben R. Starev | 1981-04-28 |