Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8895642 | Buoyancy control material for subsea main pipelines and high-density buoyancy control material for subsea main pipelines | Igor I. Shaporin | 2014-11-25 |
| 5039253 | Method for trenchless laying of pipes and an arrangement for carrying out the method | Leonid I. Kantovich, Sergei M. Grigoriev, Sergei A. Vasin | 1991-08-13 |