C02F 2303/06
Sludge reduction
Official title: Sludge reduction, e.g. by lysis
C02F2303/06 (Sludge reduction) appears on 169 US grants and 245 published applications in this corpus.
Search patents in C02F- Granted patents
- 169
- Published applications
- 245
- Assignees
- 174
- Inventors
- 488
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 3 | 5 |
| 2003 | 3 | 5 |
| 2004 | 3 | 2 |
| 2005 | 2 | 1 |
| 2006 | 2 | 7 |
| 2007 | 2 | 5 |
| 2008 | 2 | 7 |
| 2009 | 7 | 9 |
| 2010 | 4 | 7 |
| 2011 | 4 | 2 |
| 2012 | 0 | 9 |
| 2013 | 3 | 8 |
| 2014 | 5 | 11 |
| 2015 | 5 | 14 |
| 2016 | 5 | 22 |
| 2017 | 13 | 14 |
| 2018 | 8 | 11 |
| 2019 | 17 | 10 |
| 2020 | 7 | 10 |
| 2021 | 12 | 25 |
| 2022 | 12 | 12 |
| 2023 | 11 | 20 |
| 2024 | 13 | 15 |
| 2025 | 13 | 6 |
| 2026 | 6 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Hydrodynamic cavitation system for the removal of unwanted, toxic, or contaminated organic and inorganic compounds25 Aug 2026US 12,715,788 B28215 Technology, Inc.
- Processes for treatment of residuals28 Jul 2026US 12,692,182 B2Université Concordia
- Methods for biological processing of hydrocarbon-containing substances and system for realization thereof28 Jul 2026US 12,692,444 B2CarbonadeUSA, Corp.
- Multi-stage circulating separation equipment28 Apr 2026US 12,612,318 B2
- Method for treating waters, sediments and/or sludges24 Feb 2026US 12,559,400 B2OASE GmbH
- Operation method of water treatment apparatus and water treatment apparatus8 Oct 2026US 2026/0308031 A1Kubota Corporation
- Aerobic biological wastewater treatment in a continuous flow reactor24 Sep 2026US 2026/0285722 A1HaskoningDHV Nederland B.V.
- Fermentation method for recovering carboxylic acids while reducing greenhouse gas emissions30 Jul 2026US 2026/0217580 A1Shanghai Municipal Engineering Design Institute (Group) Co., Ltd.
- Stormwater Waste Decanting Process Utilizing Clinoptilolite Zeolite Powder and Granules for Faster and more Efficient Liquid Separation and Toxin Encapsulation30 Jul 2026US 2026/0217585 A1Agrinutrient, LLC
- Cleaning robot docking station and cleaning system with the cleaning robot docking station23 Jul 2026US 2026/0207022 A1TP-Link Systems Inc.
Most cited
By later US patents
- Fluid jet cavitation method and system for efficient decontamination of liquids88US 6,200,486 B1Dynaflow, Inc. · 2001
- Wastewater energy recycling method81US 4,159,944 A1979
- Organic sludge-energy recycling method43US 4,342,650 A1982
- Apparatus for water treatment and method of treating water26US 7,967,984 B2Asahi Kasei Chemicals Corporation · 2011
- Biological sludge-energy recycling method23US 4,267,049 A1981