Issued Patents All Time
Showing 1–25 of 156 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9080112 | Filtration method for refining and chemical industries | Ping-Wen Yen, Yuh-Sheve Ho, Hung-Tzu Chiu, Chung-Jong Hwu, June-Cheng Chang +5 more | 2015-07-14 |
| 8506820 | Process and apparatus for online rejuvenation of contaminated sulfolane solvent | Ping-Wen Yen, Yuh-Sheve Ho, Hung-Tzu Chiu, Chung-Jong Hwu, June-Cheng Chang +3 more | 2013-08-13 |
| 7060236 | Process for removing volatile organic compounds | Jen-Ray Chang | 2006-06-13 |
| 6953870 | Self-propelled liquid fuel | Tsang-po Yan, Tsung-che Yen | 2005-10-11 |
| 6399812 | Production of aliphatic esters | Jen-Ray Chang | 2002-06-04 |
| 5846503 | Process for rejuvenating used alkanolamaine solutions | — | 1998-12-08 |
| 5650063 | Removal of acidic halides from hot gas streams and attrition regeneration of caustic | — | 1997-07-22 |
| 5645713 | Three phase removal of halides from liquid hydrocarbons | — | 1997-07-08 |
| 5635078 | Rejuvenated catalytic oxidation of waste water, particularly for removal of cyanide and sulfur compounds | — | 1997-06-03 |
| 5620589 | Chemically active vapor/liquid separator | — | 1997-04-15 |
| 5611913 | Dissolving salt for solid caustic with oil | — | 1997-03-18 |
| 5607576 | Two phase treatment of gas to remove halogens | — | 1997-03-04 |
| 5601702 | Removal of acidic halides from gas streams | — | 1997-02-11 |
| 5595648 | Two phase removal of halides from liquid hydrocarbons cross-reference to related applications | — | 1997-01-21 |
| 5573657 | Hydrogenation process | Thomas F. Degnan, Richard C. Dougherty, George H. Hatzikos, Stuart S. Shih | 1996-11-12 |
| 5552063 | Process for treating wastewater containing phenol, ammonia, and cod | — | 1996-09-03 |
| 5498743 | Process for producing dialkylcarbonates | Stuart S. Shih, Margaret M. Wu | 1996-03-12 |
| 5476983 | Reclamation of HF and recovery of gasoline from acid-soluble oil by cracking | — | 1995-12-19 |
| 5472638 | Corrosion inhibitor | Bruce D. McLaughlin | 1995-12-05 |
| 5419884 | Regenerative mercury removal process | Vernon W. Weekman | 1995-05-30 |
| 5413702 | High severity visbreaking of residual oil | — | 1995-05-09 |
| 5401393 | Reactive adsorbent and method for removing mercury from hydrocarbon fluids | Darrell D. Whitehurst | 1995-03-28 |
| 5380442 | Regeneration of used stretford solution for recycle | — | 1995-01-10 |
| 5360552 | Removal of cyanide, sulfides and thiosulfate from ammonia-containing wastewater by catalytic oxidation | — | 1994-11-01 |
| 5338463 | Wastewater treatment by catalytic oxidation | — | 1994-08-16 |