C05F 7/00
Fertilisers from waste water, sewage sludge, sea slime, ooze or similar masses
C05F7/00 (Fertilisers from waste water, sewage sludge, sea slime, ooze or similar masses) appears on 340 US grants and 339 published applications in this corpus.
Search patents in C05F- Granted patents
- 340
- Published applications
- 339
- Assignees
- 263
- Inventors
- 760
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 3 | 0 |
| 1978 | 7 | 0 |
| 1979 | 10 | 0 |
| 1980 | 12 | 0 |
| 1981 | 7 | 0 |
| 1982 | 4 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 3 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 5 | 0 |
| 1992 | 2 | 0 |
| 1993 | 5 | 0 |
| 1994 | 8 | 0 |
| 1995 | 12 | 0 |
| 1996 | 8 | 0 |
| 1997 | 12 | 0 |
| 1998 | 6 | 0 |
| 1999 | 7 | 0 |
| 2000 | 7 | 0 |
| 2001 | 4 | 1 |
| 2002 | 8 | 6 |
| 2003 | 7 | 6 |
| 2004 | 5 | 9 |
| 2005 | 6 | 7 |
| 2006 | 5 | 9 |
| 2007 | 2 | 9 |
| 2008 | 2 | 8 |
| 2009 | 4 | 10 |
| 2010 | 9 | 14 |
| 2011 | 10 | 12 |
| 2012 | 8 | 15 |
| 2013 | 12 | 7 |
| 2014 | 8 | 25 |
| 2015 | 15 | 24 |
| 2016 | 10 | 18 |
| 2017 | 7 | 8 |
| 2018 | 9 | 15 |
| 2019 | 12 | 19 |
| 2020 | 8 | 16 |
| 2021 | 5 | 25 |
| 2022 | 9 | 13 |
| 2023 | 10 | 24 |
| 2024 | 15 | 19 |
| 2025 | 9 | 13 |
| 2026 | 5 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Systems, methods, and compounds for sustainable wastewater treatment and co-products thereof8 Sep 2026US 12,729,144 B2
- Apparatus and methods for nitrogen reduction in wastewater11 Aug 2026US 12,703,650 B2The Board of Trustees of the Leland Stanford Junior University
- Electrohydromodulating process for recovering nutrients, mineralizing organics, and inactivating pathogens in wastewater19 May 2026US 12,630,452 B2University of Miami
- Water and energy recovery system17 Feb 2026US 12,552,695 B2LIXIL Corporation
- Method for manufacturing useful products containing carbonized solids by treating organic wastes containing heavy metals27 Jan 2026US 12,533,719 B2Matsui Consulting Firm Co., Ltd.
- Vermifilter systems and methods for wastewater filtration20 Aug 2026US 2026/0242262 A1TBF-Solutions Inc.
- Method of processing drinking water treatment material20 Aug 2026US 2026/0242268 A1Reale Lime
- A fertiliser composition based on a biotised, sewage sludge pyrolysis product20 Aug 2026US 2026/0242304 A1Groown S.R.O.
- Water and Energy Recovery System28 May 2026US 2026/0145976 A1LIXIL Corporation
- Process for capturing carbon dioxide using bio-digester slurry leading to manure quality improvement7 May 2026US 2026/0124572 A1Indian Oil Corporation Limited
Most cited
By later US patents
- Biochar157US 8,361,186 B1Full Circle Biochar, Inc. · 2013
- Method of treating wastewater sludge98US 4,781,842 AN-Viro Energy Systems Ltd. · 1988
- Method for treating wastewater sludge94US 4,902,431 AN-Viro Energy Systems Ltd. · 1990
- Process to stabilize bioorganic, raw or treated wastewater sludge89US 5,417,861 AN-Viro International Corporation · 1995
- Wastewater energy recycling method81US 4,159,944 A1979