C02F 2301/04
Flow arrangements
C02F2301/04 (Flow arrangements) appears on 1,326 US grants and 2,109 published applications in this corpus.
Search patents in C02F- Granted patents
- 1,326
- Published applications
- 2,109
- Assignees
- 1,125
- Inventors
- 4,289
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 3 | 0 |
| 1979 | 3 | 0 |
| 1980 | 4 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 4 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 4 | 0 |
| 1993 | 4 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 9 | 0 |
| 2000 | 7 | 0 |
| 2001 | 7 | 4 |
| 2002 | 10 | 13 |
| 2003 | 7 | 19 |
| 2004 | 11 | 25 |
| 2005 | 11 | 37 |
| 2006 | 14 | 33 |
| 2007 | 24 | 34 |
| 2008 | 25 | 31 |
| 2009 | 18 | 44 |
| 2010 | 19 | 44 |
| 2011 | 27 | 48 |
| 2012 | 32 | 41 |
| 2013 | 18 | 62 |
| 2014 | 31 | 52 |
| 2015 | 36 | 94 |
| 2016 | 43 | 91 |
| 2017 | 45 | 83 |
| 2018 | 64 | 129 |
| 2019 | 72 | 108 |
| 2020 | 113 | 139 |
| 2021 | 98 | 182 |
| 2022 | 104 | 186 |
| 2023 | 122 | 165 |
| 2024 | 98 | 164 |
| 2025 | 126 | 159 |
| 2026 | 89 | 122 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Control center box and flexible bathtub6 Oct 2026US 12,751,582 B2Jiaxing Virpol Sanitary Ware co., LTD.
- Hot flushing of building water system6 Oct 2026US 12,753,585 B2Magarl, LLC
- 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.
- Intelligent reverse osmosis control22 Sep 2026US 12,741,887 B2Ozono Polaris, S.A. de C.V.
- Aerated biological filtration process for water treatment with a view to reducing the nitrogen content (NGL) of said water with reduction of carbon-source and aeration requirements22 Sep 2026US 12,741,895 B2Veolia Water Solutions & Technologies Support
- Systems, Methods, and Apparatuses for Producing and Packaging Medical Fluids8 Oct 2026US 2026/0307835 A1
- Water purifier that uses waste heat from thermoelectric element8 Oct 2026US 2026/0308018 A1Coway Co., Ltd.
- Apparatus and method for waste-water reduction in laboratory water purification system8 Oct 2026US 2026/0308022 A1Thermo Orion Inc.
- Two-sludge water reuse process8 Oct 2026US 2026/0308030 A1
- Method for degradation of pfas based on sonocatalysis1 Oct 2026US 2026/0296932 A1Schlumberger Technology Corporation
Most cited
By later US patents
- Methods and systems for improved dosing of a chemical treatment, such as chlorine dioxide, into a fluid stream, such as a wastewater stream595US 6,949,196 B2Fkos, LLC · 2005
- Method and apparatus for controlling microorganisms112US 5,424,032 ADiversey, Inc. · 1995
- Electrolytic method and cell for sterilizing water101US 4,761,208 ALos Alamos Technical Associates, Inc. · 1988
- Gas diffusion anode and CO2 cathode electrolyte system100US 7,993,500 B2Calera Corporation · 2011
- Oral cyclosporin formulations93US 5,766,629 ASangStat Medical Corporation · 1998