C02F 3/02
Aerobic processes
C02F3/02 (Aerobic processes) appears on 5,380 US grants and 3,984 published applications in this corpus.
Search patents in C02F- Granted patents
- 5,380
- Published applications
- 3,984
- Assignees
- 2,609
- Inventors
- 9,527
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 106 | 0 |
| 1977 | 95 | 0 |
| 1978 | 100 | 0 |
| 1979 | 78 | 0 |
| 1980 | 102 | 0 |
| 1981 | 113 | 0 |
| 1982 | 59 | 0 |
| 1983 | 62 | 0 |
| 1984 | 90 | 0 |
| 1985 | 65 | 0 |
| 1986 | 77 | 0 |
| 1987 | 74 | 0 |
| 1988 | 74 | 0 |
| 1989 | 97 | 0 |
| 1990 | 88 | 0 |
| 1991 | 91 | 0 |
| 1992 | 97 | 0 |
| 1993 | 120 | 0 |
| 1994 | 109 | 0 |
| 1995 | 113 | 0 |
| 1996 | 129 | 0 |
| 1997 | 113 | 0 |
| 1998 | 100 | 0 |
| 1999 | 118 | 0 |
| 2000 | 121 | 0 |
| 2001 | 123 | 28 |
| 2002 | 104 | 87 |
| 2003 | 81 | 115 |
| 2004 | 103 | 126 |
| 2005 | 80 | 133 |
| 2006 | 93 | 132 |
| 2007 | 109 | 154 |
| 2008 | 100 | 172 |
| 2009 | 110 | 153 |
| 2010 | 116 | 175 |
| 2011 | 108 | 181 |
| 2012 | 116 | 152 |
| 2013 | 110 | 184 |
| 2014 | 117 | 193 |
| 2015 | 107 | 179 |
| 2016 | 101 | 184 |
| 2017 | 139 | 168 |
| 2018 | 133 | 168 |
| 2019 | 173 | 161 |
| 2020 | 154 | 198 |
| 2021 | 127 | 213 |
| 2022 | 150 | 182 |
| 2023 | 142 | 157 |
| 2024 | 115 | 158 |
| 2025 | 103 | 140 |
| 2026 | 75 | 91 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Systems and methods for stormwater management6 Oct 2026US 12,753,093 B2Advanced Drainage Systems, Inc.
- System and method for leachate biodegradation through aquatic microorganism digestion6 Oct 2026US 12,753,098 B1
- System and method for wastewater treatment control through microorganism settling optimization6 Oct 2026US 12,753,099 B1
- Device for influent distribution and thickened sludge fermentation to enhance MSBR system6 Oct 2026US 12,753,100 B2Corstar Environmental Equipment Shanghai Ltd
- Method and system for continuous-flow aerobic granular sludge process with improved two-stage sedimentation29 Sep 2026US 12,747,174 B2Passavant Roediger Water Technologies (Hangzhou) Co., Ltd.
- Two-sludge water reuse process8 Oct 2026US 2026/0308030 A1
- Operation method of water treatment apparatus and water treatment apparatus8 Oct 2026US 2026/0308031 A1Kubota Corporation
- Media for use in wastewater treatment8 Oct 2026US 2026/0308032 A1Technologies Bionest Inc.
- Microbial Composite Bacteria for Sludge Reduction in Biochemical Systems, Preparation Method Thereof, and Application of Microbial Agent for Sludge Reduction in Biochemical Systems8 Oct 2026US 2026/0308033 A1
- System and method for methane elimination in septic systems and method to create carbon credits or their equivalent1 Oct 2026US 2026/0296935 A1
Most cited
By later US patents
- Liquid waste oxygenation441US 5,463,176 A1995
- Ferromagnetic separation process and material265US 3,985,649 A1976
- Frameless array of hollow fiber membranes and method of maintaining clean fiber surfaces while filtering a substrate to withdraw a permeate193US 5,248,424 AZenon Environmental Inc. · 1993
- System and method for detecting time-bomb malware168US 9,536,091 B2FireEye, Inc. · 2017
- Thermophilic aerobic waste treatment system162US 5,656,155 AIP Holding Company · 1997