Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4957713 | Apparatus for growing shaped single crystals | Dmitry Y. Kravetsky, Lev M. Zatulovsky, Leonid P. Egorov, Leonid S. Okun, Efim A. Freiman +2 more | 1990-09-18 |
| 4915773 | Process for growing shaped single crystals | Dmitry Y. Kravetsky, Lev M. Zatulovsky, Leonid P. Egorov, Leonid S. Okun, Viktor V. Averyanov +2 more | 1990-04-10 |
| 4416723 | Method for producing sapphire tubes | Beniamin A. Tumasian, Leonid P. Egorov, Lev M. Zatulovsky, Peter M. Chaikin, Efim A. Freiman +4 more | 1983-11-22 |
| 4325917 | Method and apparatus for producing sapphire tubes | Beniamin A. Tumasian, Leonid P. Egorov, Lev M. Zatulovsky, Petr M. Chaikin, Efim A. Freiman +4 more | 1982-04-20 |