C02F 2103/00
Nature of the water, waste water, sewage or sludge to be treated
C02F2103/00 (Nature of the water, waste water, sewage or sludge to be treated) appears on 12,582 US grants and 16,699 published applications in this corpus.
Search patents in C02F- Granted patents
- 12,582
- Published applications
- 16,699
- Assignees
- 6,861
- Inventors
- 29,454
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 32 | 0 |
| 1977 | 46 | 0 |
| 1978 | 49 | 0 |
| 1979 | 27 | 0 |
| 1980 | 38 | 0 |
| 1981 | 43 | 0 |
| 1982 | 36 | 0 |
| 1983 | 24 | 0 |
| 1984 | 29 | 0 |
| 1985 | 33 | 0 |
| 1986 | 22 | 0 |
| 1987 | 42 | 0 |
| 1988 | 52 | 0 |
| 1989 | 57 | 0 |
| 1990 | 48 | 0 |
| 1991 | 75 | 0 |
| 1992 | 99 | 0 |
| 1993 | 89 | 0 |
| 1994 | 74 | 0 |
| 1995 | 78 | 0 |
| 1996 | 80 | 0 |
| 1997 | 84 | 0 |
| 1998 | 93 | 0 |
| 1999 | 115 | 0 |
| 2000 | 146 | 0 |
| 2001 | 183 | 56 |
| 2002 | 230 | 233 |
| 2003 | 217 | 306 |
| 2004 | 214 | 379 |
| 2005 | 186 | 386 |
| 2006 | 216 | 376 |
| 2007 | 239 | 363 |
| 2008 | 207 | 389 |
| 2009 | 224 | 412 |
| 2010 | 255 | 554 |
| 2011 | 289 | 565 |
| 2012 | 285 | 608 |
| 2013 | 312 | 587 |
| 2014 | 412 | 735 |
| 2015 | 379 | 901 |
| 2016 | 466 | 916 |
| 2017 | 557 | 913 |
| 2018 | 701 | 876 |
| 2019 | 762 | 940 |
| 2020 | 789 | 984 |
| 2021 | 782 | 999 |
| 2022 | 716 | 943 |
| 2023 | 653 | 941 |
| 2024 | 690 | 880 |
| 2025 | 704 | 870 |
| 2026 | 403 | 587 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C02F 2103/08SeawaterIndexing code2,363
- C02F 2103/02Non-contaminated waterIndexing code1,838
- C02F 2103/34From industrial activities not provided for in groups c02f2103/12 - c02f2103/32Indexing code1,632
- C02F 2103/10From quarries or from mining activitiesIndexing code1,559
- C02F 2103/42From bathing facilitiesIndexing code1,382
- C02F 2103/06Contaminated groundwater or leachateIndexing code1,154
- C02F 2103/007Contaminated open waterways, rivers, lakes or pondsIndexing code917
- C02F 2103/001Runoff or storm waterIndexing code701
All 23 subgroupsShow fewer
- C02F 2103/20From animal husbandryIndexing code645
- C02F 2103/32From the food or foodstuff industryIndexing code600
- C02F 2103/26From the processing of plants or parts thereofIndexing code581
- C02F 2103/18From the purification of gaseous effluentsIndexing code465
- C02F 2103/002Grey waterIndexing code458
- C02F 2103/008Originating from marine vessels, ships and boatsIndexing code449
- C02F 2103/005Black water originating from toiletsIndexing code389
- C02F 2103/16From metallurgical processes, i.e. from the production, refining or treatment of metalsIndexing code386
- C02F 2103/22From the processing of animalsIndexing code291
- C02F 2103/30From the textile industryIndexing code149
- C02F 2103/44From vehicle washing facilitiesIndexing code118
- C02F 2103/003Wastewater from hospitals, laboratories and the like, heavily contaminated by pathogenic microorganismsIndexing code109
- C02F 2103/14Paint wastesIndexing code105
- C02F 2103/12From the silicate or ceramic industriesIndexing code78
- C02F 2103/006Dental effluentsIndexing code21
Recent patents
- Control center box and flexible bathtub6 Oct 2026US 12,751,582 B2Jiaxing Virpol Sanitary Ware co., LTD.
- Hybrid system and method of waste heat utilization-based photovoltaic power generation and seawater desalination6 Oct 2026US 12,752,240 B2Xi' An Jiaotong University
- Preparation method of high-efficiency gel for seawater desalination6 Oct 2026US 12,752,249 B2Shanghai Maritime University
- Systems and methods for stormwater management6 Oct 2026US 12,753,093 B2Advanced Drainage Systems, Inc.
- Structure and apparatus for purifying and containing high clarity water used for direct contact recreational purposes6 Oct 2026US 12,753,094 B2Crystal Lagoons Technologies, Inc.
- Evaporator for ambient water bodies, and related system and method8 Oct 2026US 2026/0306964 A1Resource West, Inc.
- Salt-rejecting continuous passive solar thermal desalination via thin-film condensation8 Oct 2026US 2026/0307012 A1The Regents of the University of California
- Equipment and method for removing a supernatant phase from a body of water in a polluted groundwater8 Oct 2026US 2026/0307123 A1ENI S. p. A.
- Apparatus and method for waste-water reduction in laboratory water purification system8 Oct 2026US 2026/0308022 A1Thermo Orion Inc.
- Electrochemical cell8 Oct 2026US 2026/0308024 A1Imperial College Innovations Limited
Most cited
By later US patents
- Apparatus and method of purifying water with ozone370US 6,673,248 B2S C Trade & Consult AB · 2004
- Simplified ozonator for a semiconductor wafer cleaner350US 6,399,022 B1Fairchild Semiconductor Corporation · 2002
- Medicament preparation and treatment devices, methods, and systems259US 10,478,544 B2NxStage Medical, Inc. · 2019
- Automatic chemical monitor and control system238US 5,422,014 A1995
- Method and system for producing sterile aqueous solutions193US 5,032,265 AMillipore Corporation · 1991