| 2024/0417,256 | PRODUCTION OF SULFURIC ACID EMPLOYING AN O2 RICH STREAM | Oct 28, 22 | Dec 19, 24 | HALDOR TOPSOE A/S |
| 2024/0271,302 | SULFUR DIOXIDE DEPOLARIZED ELECTROLYSIS AND ELECTROLYZER THEREFORE | Apr 11, 24 | Aug 15, 24 | Peregrine Hydrogen Inc. |
| 2024/0158,248 | METHOD FOR RECOVERING AMMONIA | Oct 16, 23 | May 16, 24 | Not available |
| 2024/0110,305 | SULFUR DIOXIDE DEPOLARIZED ELECTROLYSIS AND ELECTROLYZER THEREFORE | Oct 03, 23 | Apr 04, 24 | Not available |
| 2023/0054,797 | Ammonium Sulphate Production on Industrial Scale | Feb 04, 21 | Feb 23, 23 | Not available |
| 2019/0276,325 | INTEGRATED PROCESS AND PLANT FOR PRODUCTION OF UREA AND UAS (UREA-AMMONIUM SULPHATE) MIXTURES | Nov 16, 17 | Sep 12, 19 | Not available |
| 2015/0329,399 | NUTRIENT RECOVERY PROCESS | Dec 18, 13 | Nov 19, 15 | ANAERGIA INC. |
| 2015/0166,418 | SYSTEM AND METHOD FOR PRODUCTION OF GRANULAR AMMONIUM SULFATE | Feb 02, 15 | Jun 18, 15 | PCI NITROGEN, LLC |
| 2014/0170,725 | PROCESS AND APPARATUS FOR CAPTURING GASEOUS AMMONIA | Nov 11, 13 | Jun 19, 14 | ANDREWS AG SOLUTIONS, INC. |
| 2014/0033,778 | CONVERSION OF ACID GAS TO SULPHATE OR PHOSPHATE-BASED FERTILIZERS | Apr 20, 12 | Feb 06, 14 | SULVARIS INC. |
| 2013/0164,211 | Process for Producing Ammonium Salts | Dec 21, 11 | Jun 27, 13 | CELANESE INTERNATIONAL CORPORATION |
| 2013/0064,755 | Method for the Manufacture of an Ammonium Sulfate Composition | Apr 13, 11 | Mar 14, 13 | CELANESE SALES GERMANY GMBH |
| 2012/0063,991 | METHOD OF TREATING AN ACID GAS STREAM AND AN APPARATUS THEREFOR | Apr 06, 10 | Mar 15, 12 | SHELL OIL COMPANY |
| 2011/0256,045 | PROCESS FOR PRODUCING AMMONIUM SALTS | Apr 18, 11 | Oct 20, 11 | CELANESE INTERNATIONAL CORPORATION |
| 2011/0256,046 | PROCESS FOR PRODUCING AMMONIUM SALTS | Apr 18, 11 | Oct 20, 11 | CELANESE INTERNATIONAL CORPORATION |
| 2011/0229,403 | Gaseous Ammonia Removal System | Mar 15, 11 | Sep 22, 11 | THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY OF AGRICULTURE |
| 2011/0044,879 | PROCESS FOR THE TREATMENT AND PURIFICATION OF DANGEROUS WASTES CONTAINING AMMONIUM SALTS, PARTICULARLY AMMONIUM CHLORIDE, DERIVED FROM PHARMACEUTICAL AND CHEMICAL TECHNOLOGIES | Mar 22, 07 | Feb 24, 11 | DEBRECENI EGYETEM |