Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D714917 | Waxless urinal gasket | Jody D. Miller, Robert M. Grimmett | 2014-10-07 |
| 5635055 | Membrane process for increasing conversion of catalytic cracking or thermal cracking units (LAW011) | Tan-Jen Chen, Charles P. Darnell | 1997-06-03 |
| 5120900 | Integrated solvent extraction/membrane extraction with retentate recycle for improved raffinate yield | Tan-Jen Chen | 1992-06-09 |
| 5107059 | Iso/normal paraffin separation by membrane extraction | Tan-Jen Chen | 1992-04-21 |
| 5107056 | Selective separation of naphthenes from paraffins by membrane extraction | Tan-Jen Chen | 1992-04-21 |
| 5107058 | Olefin/paraffin separation via membrane extraction | Tan-Jen Chen | 1992-04-21 |
| 5095170 | Intergrated membrane pre-extraction/solvent extraction of distillates | Tan-Jen Chen | 1992-03-10 |
| 5045206 | Selective multi-ring aromatics extraction using a porous, non-selective partition membrane barrier | Tan-Jen Chen | 1991-09-03 |
| 4978454 | Membrane assisted settling process | — | 1990-12-18 |
| 4892660 | Pressure induced surfactant recovery during ultrafiltration of water-oil emulsions | — | 1990-01-09 |