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| 2025/0034,018 | STAGED METHODS AND SYSTEMS FOR THE VALORIZATION OF SLUDGE AND BIOSOLIDS | Oct 08, 24 | Jan 30, 25 | Texas Tech University System |
| 2025/0019,264 | Method for Nitrogen Removal and Nitrogen Salts Recovery Using Carboxylated Cellulose Extracted by Nitro-oxidation | Sep 20, 24 | Jan 16, 25 | The Research Foundation for the State University of New York |
| 2024/0425,400 | METHOD OF SLUDGE PRETREATMENT FOR IMPROVED DIGESTIBILITY AND REDUCED SCALING | Jul 22, 22 | Dec 26, 24 | The Governors of the University of Alberta |
| 2024/0425,428 | FERTILIZER COMPOSITIONS AND METHODS OF USING SAME | Jan 25, 22 | Dec 26, 24 | MIGAL GALILEE RESEARCH INSTITUTE LTD. |
| 2024/0368,537 | PSEUDOMONAS FLUORESCENS N1 AND USE THEREOF | Jun 24, 24 | Nov 07, 24 | SHANXI BOYU BIOTECHNOLOGY CO., LTD. |
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| 2023/0105,958 | Water and Energy Recovery System | Oct 03, 22 | Apr 06, 23 | Triangle Environmental Health Initiative LLC |
| 2023/0013,004 | SYSTEMS, METHODS, AND APPARATUS FOR INCREASED WASTEWATER EFFLUENT AND BIOSOLIDS QUALITY | Jul 19, 22 | Jan 19, 23 | Not available |
| 2022/0259,113 | BIOLOGICAL SOLIDS PROCESSING | May 09, 22 | Aug 18, 22 | Not available |
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| 2021/0323,888 | METHOD FOR SLUDGE DEWATERING USING KITCHEN WASTE TO SYNERGISTICALLY ENHANCE ANAEROBIC BIOLOGICAL ACIDIFICATION AND LOW-TEMPERATURE THERMAL HYDROLYSIS OF EXCESS SLUDGE | Jan 21, 21 | Oct 21, 21 | Tongji University |
| 2021/0139,387 | Production of Arginine-Rich Proteins from Wastewater and Use as a Fertilizer | Jan 14, 21 | May 13, 21 | Not available |