C02F 2209/06
Ph
Official title: pH
C02F2209/06 (Ph) appears on 1,957 US grants and 2,787 published applications in this corpus.
Search patents in C02F- Granted patents
- 1,957
- Published applications
- 2,787
- Assignees
- 1,581
- Inventors
- 5,919
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 11 | 0 |
| 1978 | 8 | 0 |
| 1979 | 6 | 0 |
| 1980 | 4 | 0 |
| 1981 | 1 | 0 |
| 1982 | 5 | 0 |
| 1983 | 3 | 0 |
| 1984 | 5 | 0 |
| 1985 | 2 | 0 |
| 1986 | 6 | 0 |
| 1987 | 5 | 0 |
| 1988 | 9 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 7 | 0 |
| 1992 | 6 | 0 |
| 1993 | 9 | 0 |
| 1994 | 16 | 0 |
| 1995 | 11 | 0 |
| 1996 | 16 | 0 |
| 1997 | 19 | 0 |
| 1998 | 16 | 0 |
| 1999 | 33 | 0 |
| 2000 | 24 | 0 |
| 2001 | 34 | 8 |
| 2002 | 35 | 67 |
| 2003 | 49 | 57 |
| 2004 | 34 | 53 |
| 2005 | 26 | 63 |
| 2006 | 18 | 50 |
| 2007 | 36 | 60 |
| 2008 | 36 | 76 |
| 2009 | 36 | 67 |
| 2010 | 55 | 100 |
| 2011 | 43 | 87 |
| 2012 | 58 | 125 |
| 2013 | 74 | 127 |
| 2014 | 59 | 106 |
| 2015 | 67 | 127 |
| 2016 | 60 | 104 |
| 2017 | 85 | 119 |
| 2018 | 95 | 116 |
| 2019 | 68 | 126 |
| 2020 | 100 | 140 |
| 2021 | 95 | 180 |
| 2022 | 116 | 160 |
| 2023 | 114 | 178 |
| 2024 | 120 | 178 |
| 2025 | 128 | 152 |
| 2026 | 86 | 161 |
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
- Pure water production system and pure water production method29 Sep 2026US 12,747,171 B2Organo Corporation
- Method for high-value application of PTA residue high-concentration bromine-containing wastewater to preparation of cuprous bromide22 Sep 2026US 12,741,881 B2Jiangsu University of Technology
- Filter for controlling pH of purified water and water purifier including the same22 Sep 2026US 12,741,892 B2Coway Co., Ltd.
- Method and kit for remediation of environments contaminated with halogenated organic compounds15 Sep 2026US 12,734,568 B2Photon Remediation Technology N.V.
- Integrated Ocean Alkalinity Enhancement And Seawater Desalination8 Oct 2026US 2026/0308037 A1Ebb Carbon, Inc.
- Dynamic control of lithium production facility using model predictive controller1 Oct 2026US 2026/0297703 A1ExxonMobil Technology and Engineering Company
- Water treatment apparatus for decomposing perfluorinated compound on basis of vacuum ultraviolet rays24 Sep 2026US 2026/0285710 A1Seoul National University R&Db Foundation
- Method for metal ion removal from metal-containing solution using fluidized bed homogeneous crystallization24 Sep 2026US 2026/0285717 A1National Chunghsing University
- Desalination and softening of produced water24 Sep 2026US 2026/0285723 A1Chevron U.S.A.Inc.
Most cited
By later US patents
- Golf course irrigation water monitoring and treatment system204US 6,620,329 B2Turf Sentry, Inc. · 2003
- Method and apparatus for capacitive deionization, electrochemical purification, and regeneration of electrodes157US 5,425,858 AThe Regents of the University of California · 1995
- Sorbent reactor for extracorporeal blood treatment systems, peritoneal dialysis systems, and other body fluid treatment systems152US 7,169,303 B2HemoCleanse Technologies LLC · 2007
- Swimming pool management system146US 6,125,481 A2000
- Method and apparatus for capacitive deionization and electrochemical purification and regeneration of electrodes139US 6,309,532 B1The Regents of the University of California · 2001