C02F 2209/04
Oxidation reduction potential [orp]
Official title: Oxidation reduction potential [ORP]
C02F2209/04 (Oxidation reduction potential [orp]) appears on 682 US grants and 866 published applications in this corpus.
Search patents in C02F- Granted patents
- 682
- Published applications
- 866
- Assignees
- 496
- Inventors
- 1,641
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 4 | 0 |
| 1995 | 3 | 0 |
| 1996 | 8 | 0 |
| 1997 | 11 | 0 |
| 1998 | 11 | 0 |
| 1999 | 17 | 0 |
| 2000 | 13 | 0 |
| 2001 | 15 | 5 |
| 2002 | 19 | 27 |
| 2003 | 26 | 25 |
| 2004 | 19 | 22 |
| 2005 | 8 | 27 |
| 2006 | 10 | 30 |
| 2007 | 18 | 21 |
| 2008 | 12 | 31 |
| 2009 | 17 | 44 |
| 2010 | 22 | 32 |
| 2011 | 21 | 23 |
| 2012 | 23 | 33 |
| 2013 | 21 | 37 |
| 2014 | 22 | 32 |
| 2015 | 18 | 36 |
| 2016 | 22 | 32 |
| 2017 | 23 | 45 |
| 2018 | 21 | 31 |
| 2019 | 22 | 41 |
| 2020 | 38 | 38 |
| 2021 | 34 | 47 |
| 2022 | 46 | 49 |
| 2023 | 41 | 47 |
| 2024 | 31 | 40 |
| 2025 | 31 | 34 |
| 2026 | 22 | 37 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Device for influent distribution and thickened sludge fermentation to enhance MSBR system6 Oct 2026US 12,753,100 B2Corstar Environmental Equipment Shanghai Ltd
- Production device for pH/redox potential-adjusted water8 Sep 2026US 12,729,145 B2Kurita Water Industries Ltd.
- Water quality monitor system and method1 Sep 2026US 12,724,020 B2Pentair Water Pool and Spa, Inc.
- Anoxic bioreactor treatment followed by pH adjusted peroxide/iron treatment for enhanced, efficient selenium removal in wastewaters25 Aug 2026US 12,715,802 B2Evoqua Water Technologies LLC
- System and a method for changing color of pool lights11 Aug 2026US 12,705,960 B2Pentair Water Pool and Spa, Inc.
- Measurement device, measurement method, measurement program, and water treatment system17 Sep 2026US 2026/0274714 A1Yokogawa Electric Corporation
- Process and system for simultaneous nitrification and denitrification17 Sep 2026US 2026/0274723 A1Fluence Water Products and Innovation Ltd
- Control device, control method, and control program20 Aug 2026US 2026/0242254 A1Yokogawa Electric Corporation
- Analysis device, analysis method, analysis program, and water treatment system20 Aug 2026US 2026/0242255 A1Yokogawa Electric Corporation
- Aquatic total alkalinity measurement system and method13 Aug 2026US 2026/0235573 A1Pcfr SAS
Most cited
By later US patents
- Sorbent reactor for extracorporeal blood treatment systems, peritoneal dialysis systems, and other body fluid treatment systems152US 7,169,303 B2HemoCleanse Technologies LLC · 2007
- Integrated water treatment control system with probe failure detection131US 5,895,565 ASanta Barbara Control Systems · 1999
- Implantable bone lengthening apparatus using a drive gear mechanism129US 5,704,938 AVolunteers for Medical Engineering · 1998
- Chlorination and pH control system112US 4,767,511 A1988
- Use of physiologically balanced, ionized, acidic solution in wound healing105US 6,426,066 B1California Pacific Labs, Inc. · 2002