Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7959133 | Grid falling film devolatilizer | Zhaoyan Liu | 2011-06-14 |
| 7753080 | Three-dimensionally intersecting diverter as an inner member for a pipe, barrel or tower | Zhaoyan Liu | 2010-07-13 |