Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11850370 | Urinary catheter | Zhihui Yin, Tom Roberts | 2023-12-26 |
| 10857324 | Urinary catheter | Zhihui Yin, Tom Roberts | 2020-12-08 |
| 5803179 | Screened well drainage pipe structure with sealed, variable length labyrinth inlet flow control apparatus | Ralph H. Echols, Syed Hamid, Rex D. Presley, Timothy Edward Harms | 1998-09-08 |
| 5422626 | Electrical monitoring system | — | 1995-06-06 |
| 5368242 | Bunk silo unloader | — | 1994-11-29 |
| 5166664 | Warning method and apparatus and parallel correlator particularly useful therein | — | 1992-11-24 |
| RE32469 | Side pocket mandrel | David T. Merritt, Olen R. Long | 1987-08-11 |
| 4416330 | Side pocket mandrel | David T. Merritt, Olen R. Long | 1983-11-22 |
| 4349071 | Cement retainer and setting tool assembly | — | 1982-09-14 |