Issued Patents 2020
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10731333 | Structure-lining apparatus with adjustable width and tool for same | Semion Krivulin, Zi Li Fang, Yue Heng Leung | 2020-08-04 |
| 10662661 | Methods and apparatus for restoring, repairing, reinforcing and/or protecting structures using concrete | Semion Krivulin, Jorge Ricardo Rosas-Gracida, Zi Li Fang | 2020-05-26 |