C23F 11/142
Hydroxy amines
Official title: {Hydroxy amines}
C23F11/142 (Hydroxy amines) appears on 65 US grants and 46 published applications in this corpus.
Search patents in C23F- Granted patents
- 65
- Published applications
- 46
- Assignees
- 49
- Inventors
- 134
- Latest grant
- 10 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 3 | 0 |
| 1989 | 4 | 0 |
| 1990 | 4 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 2 |
| 2004 | 1 | 0 |
| 2005 | 1 | 3 |
| 2006 | 1 | 3 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 1 | 1 |
| 2010 | 2 | 1 |
| 2011 | 1 | 0 |
| 2012 | 2 | 1 |
| 2013 | 0 | 4 |
| 2014 | 2 | 1 |
| 2015 | 3 | 1 |
| 2016 | 1 | 3 |
| 2017 | 2 | 3 |
| 2018 | 1 | 1 |
| 2019 | 1 | 2 |
| 2020 | 2 | 1 |
| 2021 | 0 | 4 |
| 2022 | 1 | 0 |
| 2023 | 0 | 2 |
| 2024 | 4 | 4 |
| 2025 | 2 | 5 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Refinery crude distillation unit corrosion inhibitor10 Mar 2026US 12,570,907 B2Saudi Arabian Oil Company
- Ethoxylated fatty diamine as a corrosion inhibitor for pipelines and storage tanks6 May 2025US 12,291,785 B2Saudi Arabian Oil Company
- Corrosion inhibitor solutions and corrosion-resistant substrates that include pyridinium hydroxyl alkyl ether compounds and methods of making the same18 Feb 2025US 12,227,670 B2Saudi Arabian Oil Company
- Aromatic amine epoxide adducts for corrosion inhibition19 Mar 2024US 11,932,795 B2Ecolab USA Inc.
- Modified acid compositions as alternatives to conventional acids in the oil and gas industry5 Mar 2024US 11,920,081 B2Dorf Ketal Chemicals Fze
- Treatments for controlling liquid and vapor phase corrosion with film-forming compounds25 Jun 2026US 2026/0176770 A1Chemtreat, Inc.
- Refinery crude distillation unit corrosion inhibitor7 May 2026US 2026/0125604 A1Saudi Arabian Oil Company
- Corrosion inhibitor composition and method for inhibiting corrosion in geothermal well system30 Apr 2026US 2026/0117115 A1Chemtreat, Inc.
- Choline hydroxide for salt displacement in renewable feedstock process9 Oct 2025US 2025/0313960 A1Ecolab USA Inc.
- Ethoxylated fatty diamine as a corrosion inhibitor for pipelines and storage tanks14 Aug 2025US 2025/0257471 A1Aramco Services Company
Most cited
By later US patents
- Composition and method for inhibiting corrosion47US 4,350,606 ADearborn Chemical Company · 1982
- Aqueous cleaning composition containing copper-specific corrosion inhibitor for cleaning inorganic residues on semiconductor substrate44US 6,896,826 B2Advanced Technology Materials, Inc. · 2005
- Using molybdates to inhibit corrosion in water-based metalworking fluids28US 4,313,837 AAmax Inc. · 1982
- Monoalkanolamide borates, compositions containing the same, and the use thereof as rust-inhibitors and as synergistic lubricative-enhancive addenda22US 4,176,076 A1979
- Mannich condensates of a substituted phenol and an alkylamine containing internal alkoxy groups19US 4,952,732 ATexaco Inc. · 1990