Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8771403 | Method and system for capturing carbon dioxide and/or sulfur dioxide from gas stream | Yang Li, Xinglei Zhao | 2014-07-08 |
| 8007749 | Method for scavenging mercury | Shou-heng Liu, Zhao Liu, Naiqiang Yan | 2011-08-30 |
| 7754170 | Method for scavenging mercury | Shou-heng Liu, Zhao Liu, Naiqiang Yan | 2010-07-13 |
| 7479263 | Method for scavenging mercury | Shou-heng Liu, Zhao Liu, Naiqiang Yan | 2009-01-20 |
| 6297189 | Sulfide catalysts for reducing SO2 to elemental sulfur | Yun Jin, Qiquan Yu | 2001-10-02 |
| 5658545 | Metal regeneration of iron chelates in nitric oxide scrubbing | David Littlejohn, Yao Shi | 1997-08-19 |
| 5494879 | Catalyst for the reduction of sulfur dioxide to elemental sulfur | Yun Jin, Qiquan Yu | 1996-02-27 |
| 5370849 | Metal chelate process to remove pollutants from fluids | — | 1994-12-06 |
| 5348715 | Processes to remove acid forming gases from exhaust gases | — | 1994-09-20 |
| 5332563 | Yellow phosphorus process to convert toxic chemicals to non-toxic products | — | 1994-07-26 |
| 5164167 | Process for the removal of acid forming gases from exhaust gases | David Liu | 1992-11-17 |
| 5106601 | Process for the removal of acid forming gases from exhaust gases and production of phosphoric acid | David Liu | 1992-04-21 |
| 4837361 | A process for the preparation of cysteine from cystine | David Liu, Elizabeth A. Griffiths, David Littlejohn | 1989-06-06 |
| 4810474 | Method of removing nitrogen monoxide from a nitrogen monoxide-containing gas using a water-soluble iron ion-dithiocarbamate, xanthate or thioxanthate | David Liu | 1989-03-07 |
| 4732744 | Process for the combined removal of SO.sub.2 and NO.sub.x from flue gas | David Liu, Elizabeth A. Griffiths, David Littlejohn | 1988-03-22 |