C23F 11/141
Amines
Official title: {Amines; Quaternary ammonium compounds}
C23F11/141 (Amines) appears on 301 US grants and 272 published applications in this corpus.
Search patents in C23F- Granted patents
- 301
- Published applications
- 272
- Assignees
- 181
- Inventors
- 712
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 3 | 0 |
| 1978 | 4 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 6 | 0 |
| 1982 | 6 | 0 |
| 1983 | 1 | 0 |
| 1984 | 5 | 0 |
| 1985 | 5 | 0 |
| 1986 | 3 | 0 |
| 1987 | 6 | 0 |
| 1988 | 8 | 0 |
| 1989 | 9 | 0 |
| 1990 | 6 | 0 |
| 1991 | 4 | 0 |
| 1992 | 5 | 0 |
| 1993 | 2 | 0 |
| 1994 | 7 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 11 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 1 | 1 |
| 2002 | 3 | 5 |
| 2003 | 2 | 6 |
| 2004 | 5 | 7 |
| 2005 | 2 | 10 |
| 2006 | 4 | 13 |
| 2007 | 5 | 5 |
| 2008 | 2 | 2 |
| 2009 | 4 | 10 |
| 2010 | 6 | 8 |
| 2011 | 6 | 9 |
| 2012 | 5 | 8 |
| 2013 | 7 | 16 |
| 2014 | 9 | 9 |
| 2015 | 16 | 15 |
| 2016 | 9 | 17 |
| 2017 | 11 | 10 |
| 2018 | 9 | 12 |
| 2019 | 12 | 12 |
| 2020 | 10 | 15 |
| 2021 | 12 | 19 |
| 2022 | 11 | 10 |
| 2023 | 11 | 12 |
| 2024 | 12 | 14 |
| 2025 | 5 | 17 |
| 2026 | 8 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Production method for etching liquid composition6 Oct 2026US 12,753,516 B2Kao Corporation
- 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.
- Coolant with low electrical conductivity4 Aug 2026US 12,698,430 B2BASF SE
- Corrosion-inhibitor compounds, materials including such, and uses thereof9 Jul 2026US 2026/0193535 A1Saudi Arabian Oil Company
- Corrosion inhibitor having silica nanoparticles25 Jun 2026US 2026/0176531 A1ChampionX LLC
- Treatments for controlling liquid and vapor phase corrosion with film-forming compounds25 Jun 2026US 2026/0176770 A1Chemtreat, Inc.
- Polyamine-polyesters as corrosion inhibition11 Jun 2026US 2026/0159756 A1Ecolab USA Inc.
- Stray current corrosion inhibitor28 May 2026US 2026/0146335 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
- Inhibition of scale deposition from steam generation fluids76US 4,476,930 AUnion Oil Company of California · 1984
- Corrosion-inhibiting compositions and functional fluids containing same55US 5,178,786 AThe Lubrizol Corporation · 1993