C02F 2209/07
Alkalinity
C02F2209/07 (Alkalinity) appears on 130 US grants and 196 published applications in this corpus.
Search patents in C02F- Granted patents
- 130
- Published applications
- 196
- Assignees
- 123
- Inventors
- 436
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 4 |
| 2003 | 3 | 6 |
| 2004 | 2 | 1 |
| 2005 | 2 | 4 |
| 2006 | 1 | 3 |
| 2007 | 1 | 2 |
| 2008 | 3 | 3 |
| 2009 | 4 | 4 |
| 2010 | 2 | 4 |
| 2011 | 1 | 3 |
| 2012 | 4 | 5 |
| 2013 | 3 | 5 |
| 2014 | 1 | 7 |
| 2015 | 2 | 8 |
| 2016 | 4 | 8 |
| 2017 | 6 | 13 |
| 2018 | 13 | 9 |
| 2019 | 5 | 9 |
| 2020 | 7 | 5 |
| 2021 | 5 | 12 |
| 2022 | 6 | 18 |
| 2023 | 11 | 16 |
| 2024 | 20 | 14 |
| 2025 | 12 | 18 |
| 2026 | 4 | 15 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System and a method for changing color of pool lights11 Aug 2026US 12,705,960 B2Pentair Water Pool and Spa, Inc.
- Acid rain diffusion based on vulnerable zone classifications7 Jul 2026US 12,673,884 B2International Business Machines Corporation
- Method for removing ammoniacal nitrogen from hypersaline effluents through a consortium containing high-salinity-resistant heterotrophic nitrifying and aerobic denitrifying microorganisms12 May 2026US 12,623,941 B2Petroleo Brasileiro S.A. - Petrobras
- Pretreatment to remove ammonia from high strength wastewater with membrane aerated biofilm sidestream6 Jan 2026US 12,515,968 B2Bl Technologies, Inc.
- Systems and methods for water production, treatment, adjustment and storage2 Dec 2025US 12,486,184 B2Source Global, PBC
- Integrated Ocean Alkalinity Enhancement And Seawater Desalination8 Oct 2026US 2026/0308037 A1Ebb Carbon, Inc.
- Membrane bioreactor wastewater treatment using calcium carbonate27 Aug 2026US 2026/0250169 A1Omya International AG
- Improved alkalinity measurement13 Aug 2026US 2026/0235571 A1I-Water
- Aquatic total alkalinity measurement system and method13 Aug 2026US 2026/0235573 A1Pcfr SAS
- Alkalinity generation systems and methods6 Aug 2026US 2026/0225928 A1Pentair Water Pool and Spa, Inc.
Most cited
By later US patents
- Golf course irrigation water monitoring and treatment system204US 6,620,329 B2Turf Sentry, Inc. · 2003
- Integrated water treatment control system with probe failure detection131US 5,895,565 ASanta Barbara Control Systems · 1999
- Sewage treatment process with phosphorus removal88US 6,712,970 B1Enviroquip, Inc. · 2004
- Cooling tower system71US 4,931,187 AKlenzoid, Inc. · 1990
- System for treating wastewater54US 7,563,363 B2Siemens Water Technologies Corp. · 2009