C23F 11/18
Using inorganic inhibitors
Official title: using inorganic inhibitors
C23F11/18 (Using inorganic inhibitors) appears on 428 US grants and 411 published applications in this corpus.
Search patents in C23F- Granted patents
- 428
- Published applications
- 411
- Assignees
- 279
- Inventors
- 955
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 2 | 0 |
| 1978 | 6 | 0 |
| 1979 | 3 | 0 |
| 1980 | 3 | 0 |
| 1981 | 3 | 0 |
| 1982 | 4 | 0 |
| 1983 | 4 | 0 |
| 1984 | 6 | 0 |
| 1985 | 6 | 0 |
| 1986 | 6 | 0 |
| 1987 | 4 | 0 |
| 1988 | 6 | 0 |
| 1989 | 8 | 0 |
| 1990 | 8 | 0 |
| 1991 | 9 | 0 |
| 1992 | 7 | 0 |
| 1993 | 4 | 0 |
| 1994 | 6 | 0 |
| 1995 | 7 | 0 |
| 1996 | 2 | 0 |
| 1997 | 8 | 0 |
| 1998 | 12 | 0 |
| 1999 | 6 | 0 |
| 2000 | 9 | 0 |
| 2001 | 3 | 4 |
| 2002 | 4 | 12 |
| 2003 | 10 | 14 |
| 2004 | 13 | 10 |
| 2005 | 7 | 12 |
| 2006 | 9 | 16 |
| 2007 | 4 | 11 |
| 2008 | 7 | 25 |
| 2009 | 4 | 11 |
| 2010 | 11 | 10 |
| 2011 | 9 | 4 |
| 2012 | 8 | 16 |
| 2013 | 13 | 16 |
| 2014 | 5 | 16 |
| 2015 | 14 | 25 |
| 2016 | 18 | 21 |
| 2017 | 13 | 12 |
| 2018 | 14 | 15 |
| 2019 | 14 | 20 |
| 2020 | 11 | 19 |
| 2021 | 10 | 22 |
| 2022 | 22 | 21 |
| 2023 | 17 | 19 |
| 2024 | 13 | 24 |
| 2025 | 15 | 15 |
| 2026 | 10 | 21 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Hydrophobic concrete and asphalt18 Aug 2026US 12,709,572 B2Nant Holdings IP, LLC
- Method of inhibiting corrosion of a metal in an industrial water system21 Jul 2026US 12,686,929 B2Ecolab USA Inc.
- Hydrophobic concrete and asphalt2 Jun 2026US 12,643,820 B2Nant Holdings IP, LLC
- Chemical treatment liquid and method for chemical treatment of target metal material26 May 2026US 12,637,773 B2Dipsol Chemicals Co., Ltd.
- Corrosion control for water systems using passivators and a hydroxycarboxylic acid14 Apr 2026US 12,601,064 B2Chemtreat, Inc.
- Method for preventing corrosion of metal component1 Oct 2026US 2026/0297757 A1Kurita Water Industries Ltd.
- Method of Inhibiting Corrosion of a Metal in an Industrial Water System1 Oct 2026US 2026/0297758 A1Ecolab USA Inc.
- Surface-treated steel sheet17 Sep 2026US 2026/0275532 A1Nippon Steel Corporation
- Flux Compatible Heat Transfer Media3 Sep 2026US 2026/0258292 A1CCI North America Corporation
- Fire retardant compositions containing one or more surfactants13 Aug 2026US 2026/0233045 A1Perimeter Solutions LP
Most cited
By later US patents
- Fire retardant compositions containing ammonium polyphosphate and iron additives for corrosion inhibition63US 6,802,994 B1Astaris LLC · 2004
- Methods and systems utilizing a boron-containing corrosion inhibitor for protection of titanium surfaces55US 10,138,560 B2Halliburton Energy Services.Inc. · 2018
- Corrosion inhibitor mixture for ammonium sulfate fire-retardant compositions and method for inhibiting corrosivity of such compositions53US 4,176,071 AEarly California Industries, Inc. · 1979
- Ozonation of cooling tower waters49US 4,172,786 A1979
- Boiler water treatment43US 4,067,690 AChemed Corporation · 1978