C23F 11/128
Esters of carboxylic acids
Official title: {Esters of carboxylic acids}
C23F11/128 (Esters of carboxylic acids) appears on 47 US grants and 37 published applications in this corpus.
Search patents in C23F- Granted patents
- 47
- Published applications
- 37
- Assignees
- 39
- Inventors
- 120
- Latest grant
- 10 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 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 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 2 | 2 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 4 | 0 |
| 2016 | 0 | 3 |
| 2017 | 1 | 1 |
| 2018 | 1 | 2 |
| 2019 | 1 | 4 |
| 2020 | 4 | 3 |
| 2021 | 2 | 4 |
| 2022 | 4 | 1 |
| 2023 | 2 | 4 |
| 2024 | 3 | 2 |
| 2025 | 1 | 3 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Blade preserving products and methods for manufacturing10 Mar 2026US 12,571,108 B2
- Alkyl lactone-derived corrosion inhibitors6 Jan 2026US 12,516,237 B2
- Macromolecular corrosion (MCIN) inhibitors: structures, methods of making and using the same9 Dec 2025US 12,492,352 B2Polnox Corporation
- Identification and characterization of novel corrosion inhibitor molecules26 Nov 2024US 12,152,164 B2Ecolab USA Inc.
- Synergistic corrosion inhibitor blends12 Nov 2024US 12,139,662 B2Baker Hughes Oilfield Operations LLC
- Treatments for controlling liquid and vapor phase corrosion with film-forming compounds25 Jun 2026US 2026/0176770 A1Chemtreat, Inc.
- Macromolecular corrosion (mcin) inhibitors: structures, methods of making and using the same16 Apr 2026US 2026/0103652 A1Polnox Corporation
- Amino acid derivatives and sulfur derivatives as biodegradable corrosion inhibitors12 Jun 2025US 2025/0188618 A1ChampionX LLC
- Corrosion inhibitor3 Apr 2025US 2025/0109343 A1Innospec Limited
- Synergistic corrosion inhibitor blends30 Jan 2025US 2025/0034447 A1Baker Hughes Oilfield Operations LLC
Most cited
By later US patents
- Corrosion inhibitors for aqueous systems93US 6,572,789 B1Ondeo Nalco Company · 2003
- Acid-anhydride esters as oil field corrosion inhibitors37US 5,292,480 AWestvaco Corporation · 1994
- Rust inhibitor and compositions thereof34US 4,148,605 AMobil Oil Corporation · 1979
- Method of scavenging oxygen in aqueous systems30US 5,244,600 AW. R. Grace & Co.-Conn. · 1993
- Corrosion inhibiting composition17US 5,091,113 ACiba-Geigy Corporation · 1992