C23F 11/04
In markedly acid liquids
Official title: in markedly acid liquids
C23F11/04 (In markedly acid liquids) appears on 355 US grants and 282 published applications in this corpus.
Search patents in C23F- Granted patents
- 355
- Published applications
- 282
- Assignees
- 152
- Inventors
- 629
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 8 | 0 |
| 1978 | 7 | 0 |
| 1979 | 5 | 0 |
| 1980 | 6 | 0 |
| 1981 | 7 | 0 |
| 1982 | 19 | 0 |
| 1983 | 10 | 0 |
| 1984 | 4 | 0 |
| 1985 | 9 | 0 |
| 1986 | 2 | 0 |
| 1987 | 7 | 0 |
| 1988 | 3 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 6 | 0 |
| 1992 | 10 | 0 |
| 1993 | 3 | 0 |
| 1994 | 7 | 0 |
| 1995 | 5 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 5 | 0 |
| 1999 | 3 | 0 |
| 2000 | 6 | 0 |
| 2001 | 5 | 1 |
| 2002 | 2 | 3 |
| 2003 | 7 | 5 |
| 2004 | 2 | 1 |
| 2005 | 0 | 5 |
| 2006 | 2 | 7 |
| 2007 | 2 | 8 |
| 2008 | 0 | 6 |
| 2009 | 1 | 3 |
| 2010 | 5 | 6 |
| 2011 | 9 | 13 |
| 2012 | 3 | 6 |
| 2013 | 6 | 3 |
| 2014 | 8 | 6 |
| 2015 | 4 | 13 |
| 2016 | 6 | 17 |
| 2017 | 9 | 31 |
| 2018 | 10 | 15 |
| 2019 | 17 | 15 |
| 2020 | 15 | 26 |
| 2021 | 14 | 15 |
| 2022 | 18 | 19 |
| 2023 | 20 | 17 |
| 2024 | 25 | 18 |
| 2025 | 9 | 15 |
| 2026 | 9 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Downhole methods and compositions used in such2 Jun 2026US 12,644,040 B2Dorf Ketal Chemicals Fze
- Downhole methods and compositions used in such2 Jun 2026US 12,644,041 B2Dorf Ketal Chemicals Fze
- Downhole methods and compositions used in such19 May 2026US 12,630,758 B2Dorf Ketal Chemicals Fze
- Downhole methods and compositions used in such12 May 2026US 12,624,278 B2Dorf Ketal Chemicals Fze
- Methods for stimulating a hydrocarbon-bearing formation by perforating a wellbore and introducing an acidic composition in the wellbore21 Apr 2026US 12,606,734 B2Dorf Ketal Chemicals Fze
- Traced corrosion inhibitor for closed loop systems9 Jul 2026US 2026/0193510 A1Chemtreat, Inc.
- Corrosion-inhibitor compounds, materials including such, and uses thereof9 Jul 2026US 2026/0193535 A1Saudi Arabian Oil Company
- Use of a corrosion inhibition composition and method for inhibition of corrosion of metals or metal alloys11 Jun 2026US 2026/0159963 A1Aloxx GmbH
- Thiosemicarbazone corrosion inhibitors5 Mar 2026US 2026/0062813 A1Iowa State University Research Foundation, Inc.
- Composition For The Anticorrosive Pretreatment And Cleaning Of Metal Surfaces In One Process Step26 Feb 2026US 2026/0055514 A1Henkel AG & Co. KGaA
Most cited
By later US patents
- Method of mixing a corrosion inhibitor in an acid-in-oil emulsion74US 8,039,422 B1Saudi Arabian Oil Company · 2011
- Noncorrosive urea-sulfuric acid compositions57US 4,402,852 AUnion Oil Company of California · 1983
- Noncorrosive urea-sulfuric acid reaction products57US 4,404,116 AUnion Oil Company of California · 1983
- Endoscope reprocessing and sterilization system57US 6,068,815 AMinntech Corporation · 2000
- Methods and systems utilizing a boron-containing corrosion inhibitor for protection of titanium surfaces55US 10,138,560 B2Halliburton Energy Services.Inc. · 2018