C23F 11/14
Nitrogen-containing compounds
C23F11/14 (Nitrogen-containing compounds) appears on 820 US grants and 644 published applications in this corpus.
Search patents in C23F- Granted patents
- 820
- Published applications
- 644
- Assignees
- 380
- Inventors
- 1,680
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 13 | 0 |
| 1977 | 8 | 0 |
| 1978 | 8 | 0 |
| 1979 | 7 | 0 |
| 1980 | 11 | 0 |
| 1981 | 15 | 0 |
| 1982 | 13 | 0 |
| 1983 | 11 | 0 |
| 1984 | 14 | 0 |
| 1985 | 8 | 0 |
| 1986 | 14 | 0 |
| 1987 | 15 | 0 |
| 1988 | 27 | 0 |
| 1989 | 15 | 0 |
| 1990 | 14 | 0 |
| 1991 | 14 | 0 |
| 1992 | 18 | 0 |
| 1993 | 19 | 0 |
| 1994 | 21 | 0 |
| 1995 | 23 | 0 |
| 1996 | 16 | 0 |
| 1997 | 8 | 0 |
| 1998 | 29 | 0 |
| 1999 | 15 | 0 |
| 2000 | 19 | 0 |
| 2001 | 9 | 2 |
| 2002 | 15 | 8 |
| 2003 | 11 | 16 |
| 2004 | 9 | 15 |
| 2005 | 6 | 17 |
| 2006 | 9 | 27 |
| 2007 | 8 | 16 |
| 2008 | 9 | 9 |
| 2009 | 6 | 23 |
| 2010 | 14 | 18 |
| 2011 | 11 | 18 |
| 2012 | 13 | 20 |
| 2013 | 17 | 23 |
| 2014 | 16 | 27 |
| 2015 | 24 | 27 |
| 2016 | 18 | 34 |
| 2017 | 24 | 33 |
| 2018 | 18 | 36 |
| 2019 | 30 | 28 |
| 2020 | 30 | 42 |
| 2021 | 35 | 33 |
| 2022 | 24 | 29 |
| 2023 | 28 | 34 |
| 2024 | 25 | 37 |
| 2025 | 17 | 38 |
| 2026 | 19 | 34 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C23F 11/149Heterocyclic compounds containing nitrogen as hetero atom389
- C23F 11/141Amines301
- C23F 11/145Amides117
- C23F 11/144Aminocarboxylic acids53
- C23F 11/146Containing a multiple nitrogen-to-carbon bond35
- C23F 11/147Containing a nitrogen-to-oxygen bond35
- C23F 11/148Containing a nitrogen-to-nitrogen bond12
Recent patents
- Production method for etching liquid composition6 Oct 2026US 12,753,516 B2Kao Corporation
- Aqueous formulation of oil-soluble corrosion inhibitor, and preparation method and regeneration method thereof22 Sep 2026US 12,742,119 B2PetroChina Company Limited
- Succinic anhydride-derived polyesters as corrosion inhibitors25 Aug 2026US 12,716,028 B2Ecolab USA Inc.
- Corrosion-resistant articles and methods for making such18 Aug 2026US 12,709,687 B2Saudi Arabian Oil Company
- Hydrocarbon functionalized polyamines for corrosion inhibition4 Aug 2026US 12,698,256 B2Ecolab USA Inc.
- Method of Inhibiting Corrosion of a Metal in an Industrial Water System1 Oct 2026US 2026/0297758 A1Ecolab USA Inc.
- Methods and systems for determining non-triazole corrosion inhibitor concentration in industrial water systems1 Oct 2026US 2026/0298825 A1Chemtreat, Inc.
- Bis-pyridinium compounds, materials including such, and uses thereof such as in corrosion resistance17 Sep 2026US 2026/0274796 A1Saudi Arabian Oil Company
- Method of inhibiting corrosion of metal piping in an oil/gas well3 Sep 2026US 2026/0258301 A1Imam Abdulrahman Bin Faisal University
- Corrosion inhibitor compositions and methods of use thereof27 Aug 2026US 2026/0250570 A1ChampionX LLC
Most cited
By later US patents
- Control of fine particulate flowback in subterranean wells335US 5,853,048 AHalliburton Energy Services, Inc. · 1998
- Control of fine particulate flowback in subterranean wells260US 5,775,425 AHalliburton Energy Services, Inc. · 1998
- Control of fine particulate flowback in subterranean wells215US 5,871,049 AHalliburton Energy Services.Inc. · 1999
- Mixtures of hexahydrotriazines useful as H.sub.2 S scavengers115US 5,347,004 ABaker Hughes Incorporated · 1994
- Corrosion and anti-foulant composition and method of use95US 5,173,213 ABaker Hughes Incorporated · 1992