C23F 11/1673
Esters of phosphoric or thiophosphoric acids
Official title: {Esters of phosphoric or thiophosphoric acids}
C23F11/1673 (Esters of phosphoric or thiophosphoric acids) appears on 77 US grants and 55 published applications in this corpus.
Search patents in C23F- Granted patents
- 77
- Published applications
- 55
- Assignees
- 68
- Inventors
- 189
- Latest grant
- 12 Nov 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 4 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 4 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 0 |
| 2003 | 2 | 0 |
| 2004 | 1 | 1 |
| 2005 | 1 | 3 |
| 2006 | 1 | 4 |
| 2007 | 1 | 1 |
| 2008 | 2 | 1 |
| 2009 | 0 | 0 |
| 2010 | 2 | 0 |
| 2011 | 1 | 1 |
| 2012 | 1 | 1 |
| 2013 | 1 | 4 |
| 2014 | 0 | 3 |
| 2015 | 3 | 2 |
| 2016 | 2 | 4 |
| 2017 | 2 | 4 |
| 2018 | 1 | 3 |
| 2019 | 4 | 6 |
| 2020 | 5 | 2 |
| 2021 | 3 | 4 |
| 2022 | 3 | 1 |
| 2023 | 3 | 2 |
| 2024 | 1 | 3 |
| 2025 | 0 | 3 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Synergistic corrosion inhibitor blends12 Nov 2024US 12,139,662 B2Baker Hughes Oilfield Operations LLC
- Oil soluble molybdenum complexes for inhibiting high temperature corrosion and related applications in petroleum refineries26 Sep 2023US 11,767,596 B2Ecolab USA Inc.
- Compositions and methods for corrosion inhibitor monitoring11 Jul 2023US 11,697,761 B2ChampionX USA Inc.
- Secondary alcohol phosphate ester10 Jan 2023US 11,548,904 B2Arkema France
- Amine-functionalized organosilane/organophosphate combination systems as EP agents / corrosion inhibitors in compositions for treating metal surfaces26 Jul 2022US 11,396,637 B2Chemetall U.S., Inc.
- Microcapsules for controlled release of actives agents, and use of said microcapsules in the oil and gas industry16 Jul 2026US 2026/0201243 A1Repsol, S. A.
- Corrosion inhibitor composition and method for inhibiting corrosion in geothermal well system30 Apr 2026US 2026/0117115 A1Chemtreat, Inc.
- Non-triazole imidazoline and amide compounds and methods for inhibiting corrosion in industrial water treatment28 Aug 2025US 2025/0270707 A1Chemtreat, Inc.
- Non-triazole imidazoline and amide compounds and methods for inhibiting corrosion in industrial water treatment19 Jun 2025US 2025/0198010 A1Chemtreat, Inc.
- Synergistic corrosion inhibitor blends30 Jan 2025US 2025/0034447 A1Baker Hughes Oilfield Operations LLC
Most cited
By later US patents
- Treatment of metal surfaces39US 4,132,657 AGAF Corporation · 1979
- Phosphorus compounds and their use as corrosion inhibitors for perfluoropolyethers39US 6,184,187 B2E. I. DuPont de Nemours and Company · 2001
- Corrosion inhibitors and methods of use39US 6,866,797 B1BJ Services Company · 2005
- Control of naphthenic acid corrosion with thiophosporus compounds34US 5,863,415 ABaker Hughes Incorporated · 1999
- Corrosion inhibition in deep gas wells by phosphate esters of poly-oxyalkylated thiols32US 4,511,480 APetrolite Corporation · 1985