C02F 2209/40
Liquid flow rate
C02F2209/40 (Liquid flow rate) appears on 2,107 US grants and 3,140 published applications in this corpus.
Search patents in C02F- Granted patents
- 2,107
- Published applications
- 3,140
- Assignees
- 1,476
- Inventors
- 5,855
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 4 | 0 |
| 1991 | 1 | 0 |
| 1992 | 5 | 0 |
| 1993 | 3 | 0 |
| 1994 | 4 | 0 |
| 1995 | 5 | 0 |
| 1996 | 10 | 0 |
| 1997 | 8 | 0 |
| 1998 | 8 | 0 |
| 1999 | 11 | 0 |
| 2000 | 15 | 0 |
| 2001 | 22 | 9 |
| 2002 | 37 | 29 |
| 2003 | 23 | 47 |
| 2004 | 29 | 62 |
| 2005 | 26 | 87 |
| 2006 | 28 | 55 |
| 2007 | 35 | 59 |
| 2008 | 45 | 78 |
| 2009 | 30 | 67 |
| 2010 | 66 | 94 |
| 2011 | 51 | 111 |
| 2012 | 65 | 93 |
| 2013 | 56 | 127 |
| 2014 | 73 | 119 |
| 2015 | 59 | 114 |
| 2016 | 62 | 165 |
| 2017 | 99 | 153 |
| 2018 | 108 | 159 |
| 2019 | 146 | 155 |
| 2020 | 134 | 195 |
| 2021 | 148 | 218 |
| 2022 | 155 | 224 |
| 2023 | 140 | 206 |
| 2024 | 141 | 165 |
| 2025 | 150 | 179 |
| 2026 | 94 | 170 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Water purification system29 Sep 2026US 12,747,167 B2Fermi Forward Discovery Group, LLC
- Resonant thermal oscillator to improve output of a thermo-fluidic system22 Sep 2026US 12,741,232 B2William Marsh Rice University
- Catalytic oxidation reactor and complete set of equipment22 Sep 2026US 12,741,893 B2Shanghai Municipal Engineering Design Institute (Group) Co., Ltd.
- Water sanitization device, system and method1 Sep 2026US 12,722,991 B2Waterco Limited
- Systems, Methods, and Apparatuses for Producing and Packaging Medical Fluids8 Oct 2026US 2026/0307835 A1
- Apparatus and method for waste-water reduction in laboratory water purification system8 Oct 2026US 2026/0308022 A1Thermo Orion Inc.
- Water treatment method and water treatment device8 Oct 2026US 2026/0308029 A1Organo Corporation
- Two-sludge water reuse process8 Oct 2026US 2026/0308030 A1
- System for determining filter status8 Oct 2026US 2026/0309611 A1
Most cited
By later US patents
- Inductively coupled ballast circuit436US 6,825,620 B2Access Business Group International LLC · 2004
- Water treatment system with an inductively coupled ballast432US 6,436,299 B1Amway Corporation · 2002
- Radio frequency identification system for a fluid treatment system361US 6,673,250 B2Access Business Group International LLC · 2004
- Inductively coupled ballast circuit355US 7,385,357 B2Access Business Group International LLC · 2008
- Inductively powered apparatus349US 7,126,450 B2Access Business Group International LLC · 2006