C23F 11/181
Nitrogen containing compounds
Official title: {Nitrogen containing compounds}
C23F11/181 (Nitrogen containing compounds) appears on 41 US grants and 34 published applications in this corpus.
Search patents in C23F- Granted patents
- 41
- Published applications
- 34
- Assignees
- 35
- Inventors
- 94
- Latest grant
- 10 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 3 |
| 2004 | 3 | 2 |
| 2005 | 0 | 1 |
| 2006 | 3 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 1 | 2 |
| 2015 | 2 | 2 |
| 2016 | 1 | 1 |
| 2017 | 0 | 1 |
| 2018 | 1 | 0 |
| 2019 | 2 | 4 |
| 2020 | 1 | 5 |
| 2021 | 2 | 3 |
| 2022 | 3 | 3 |
| 2023 | 3 | 1 |
| 2024 | 2 | 1 |
| 2025 | 1 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Closed loop cooling water corrosion inhibition employing polymaleates and non-borate buffers10 Feb 2026US 12,546,014 B2Ecolab USA Inc.
- Corrosion inhibition of metal reinforcement present in a hardened concrete construction having one or more surfaces that are exposed to chloride intrusion22 Apr 2025US 12,281,051 B2Yara International Asa
- Tire enhancement product, package and method10 Sep 2024US 12,084,287 B2Griffin Bros., Inc.
- Tire enhancement product, package, and method30 Jan 2024US 11,884,494 B2Griffin Bros., Inc.
- Inhibitors of metal corrosion17 Oct 2023US 11,788,192 B2Arkema France
- Closed loop cooling water corrosion inhibition employing polymaleates and non-borate buffers21 May 2026US 2026/0139383 A1Ecolab USA Inc.
- Corrosion inhibition of metal reinforcement present in a hardened concrete construction having one or more surfaces that are exposed to chloride intrusion26 Jun 2025US 2025/0206676 A1Yara International Asa
- Compositions for preventing polythionic acid (pta) stress corrosion cracking on 300 series stainless steel and methods of using the same18 Jul 2024US 2024/0240325 A1Refined Technologies, Inc.
- Tire enhancement product, package, and method9 Feb 2023US 2023/0043859 A1Griffin Bros., Inc.
- Tire enhancement product, package and method1 Sep 2022US 2022/0274132 A1Griffin Bros., Inc.
Most cited
By later US patents
- Boiler water treatment43US 4,067,690 AChemed Corporation · 1978
- Corrosion-inhibited polyphosphate compositions25US 3,960,735 AEarly California Industries, Inc. · 1976
- Corrosion inhibiting materials for reducing corrosion in metallic concrete reinforcements24US 7,125,441 B1Cortec Corporation · 2006
- Hydraulic cement set-accelerating admixtures incorporating glycols22US 5,348,583 AW. R. Grace & Co.-Conn. · 1994
- Corrosion inhibiting composition for reinforced concrete and method of applying same20US 5,422,141 AW. R. Grace & Co.-Conn. · 1995