Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D1022376 | Hollow chain link pin | Li-Shiang Liang, Donald W. Hindman | 2024-04-09 |
| D1007641 | Regenerative media filter with view window | — | 2023-12-12 |
| D1002793 | Regenerative media filter | — | 2023-10-24 |
| 11684898 | Point of use or point of dispense filter with multiple pleat packs | Kalyan Madhavaram, Bryan C. Cochran, John P. Puglia, J. Karl Niermeyer, Christopher Paul Barck +1 more | 2023-06-27 |
| 11130077 | Composite loop chain | Donald W. Hindman | 2021-09-28 |
| D906621 | Hollow chain link pin | Li-Shiang Liang, Donald W. Hindman | 2020-12-29 |
| 4465135 | Fire flood method for recovering petroleum from oil reservoirs of low permeability and temperature | — | 1984-08-14 |
| 4224992 | Method for enhanced oil recovery | Joseph R. Comberiati, Charles D. Locke | 1980-09-30 |