Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12240058 | Apparatus and method for making internally finned pressure vessel | Yi Chao, Robin Willis | 2025-03-04 |
| 11549644 | Apparatus and method for making internally finned pressure vessel | David M. Fratantoni, Yi Chao, Robin Willis | 2023-01-10 |
| 10989178 | Environmental thermal energy conversion | Jack A. Jones, Yi Chao, David M. Fratantoni, Robin Willis, Robert Scott Leland | 2021-04-27 |
| 10443581 | Environmental thermal energy conversion | Jack A. Jones, Yi Chao, David M. Fratantoni, Robin Willis, Robert Scott Leland | 2019-10-15 |