C02F 2209/005
Processes using a programmable logic controller [plc]
Official title: Processes using a programmable logic controller [PLC]
C02F2209/005 (Processes using a programmable logic controller [plc]) appears on 2,311 US grants and 3,526 published applications in this corpus.
Search patents in C02F- Granted patents
- 2,311
- Published applications
- 3,526
- Assignees
- 1,541
- Inventors
- 6,061
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 6 | 0 |
| 1993 | 3 | 0 |
| 1994 | 6 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 12 | 0 |
| 1999 | 14 | 0 |
| 2000 | 12 | 0 |
| 2001 | 19 | 4 |
| 2002 | 9 | 24 |
| 2003 | 19 | 40 |
| 2004 | 20 | 58 |
| 2005 | 31 | 98 |
| 2006 | 38 | 87 |
| 2007 | 39 | 75 |
| 2008 | 50 | 98 |
| 2009 | 49 | 103 |
| 2010 | 77 | 118 |
| 2011 | 57 | 135 |
| 2012 | 71 | 90 |
| 2013 | 70 | 144 |
| 2014 | 92 | 179 |
| 2015 | 85 | 142 |
| 2016 | 91 | 164 |
| 2017 | 109 | 164 |
| 2018 | 110 | 153 |
| 2019 | 150 | 165 |
| 2020 | 150 | 206 |
| 2021 | 151 | 247 |
| 2022 | 162 | 254 |
| 2023 | 146 | 255 |
| 2024 | 169 | 178 |
| 2025 | 181 | 192 |
| 2026 | 95 | 153 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Ion exchange membrane composition and methods for the concentration of perfluoroalkyl substances29 Sep 2026US 12,747,172 B2Evoqua Water Technologies LLC
- Energy services through integrated flexible operation of wastewater systems22 Sep 2026US 12,741,886 B1The Board of Trustees of the Leland Stanford Junior University
- Ultrasonic scaler having an ozonated water system8 Sep 2026US 12,729,141 B2DENTSPLY SIRONA Inc.
- Water sanitization device, system and method1 Sep 2026US 12,722,991 B2Waterco Limited
- Apparatus, system and method for automated food waste processing1 Sep 2026US 12,723,008 B2Ecotone Renewables PBC
- System for determining filter status8 Oct 2026US 2026/0309611 A1
- Anti-Fouling System1 Oct 2026US 2026/0296606 A1
- Process and system for degrading a chemical compound in a liquid stream1 Oct 2026US 2026/0296942 A1Aquasoil S.R.L.
- Dynamic control of lithium production facility using model predictive controller1 Oct 2026US 2026/0297703 A1ExxonMobil Technology and Engineering Company
- Monitoring and controlling connected pool devices24 Sep 2026US 2026/0286736 A1Pentair Water Pool and Spa, Inc.
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
- 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