C11D 3/33
Amino carboxylic acids
C11D3/33 (Amino carboxylic acids) appears on 1,064 US grants and 1,223 published applications in this corpus.
Search patents in C11D- Granted patents
- 1,064
- Published applications
- 1,223
- Assignees
- 360
- Inventors
- 2,504
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 13 | 0 |
| 1977 | 3 | 0 |
| 1978 | 7 | 0 |
| 1979 | 0 | 0 |
| 1980 | 5 | 0 |
| 1981 | 9 | 0 |
| 1982 | 3 | 0 |
| 1983 | 5 | 0 |
| 1984 | 5 | 0 |
| 1985 | 6 | 0 |
| 1986 | 4 | 0 |
| 1987 | 8 | 0 |
| 1988 | 8 | 0 |
| 1989 | 6 | 0 |
| 1990 | 3 | 0 |
| 1991 | 10 | 0 |
| 1992 | 5 | 0 |
| 1993 | 10 | 0 |
| 1994 | 10 | 0 |
| 1995 | 17 | 0 |
| 1996 | 13 | 0 |
| 1997 | 13 | 0 |
| 1998 | 38 | 0 |
| 1999 | 59 | 0 |
| 2000 | 31 | 0 |
| 2001 | 43 | 6 |
| 2002 | 39 | 23 |
| 2003 | 30 | 25 |
| 2004 | 13 | 28 |
| 2005 | 6 | 28 |
| 2006 | 14 | 44 |
| 2007 | 12 | 22 |
| 2008 | 16 | 30 |
| 2009 | 12 | 32 |
| 2010 | 15 | 46 |
| 2011 | 20 | 52 |
| 2012 | 32 | 47 |
| 2013 | 35 | 47 |
| 2014 | 43 | 27 |
| 2015 | 19 | 53 |
| 2016 | 38 | 65 |
| 2017 | 40 | 70 |
| 2018 | 33 | 87 |
| 2019 | 43 | 62 |
| 2020 | 50 | 54 |
| 2021 | 44 | 64 |
| 2022 | 33 | 64 |
| 2023 | 35 | 40 |
| 2024 | 32 | 72 |
| 2025 | 47 | 59 |
| 2026 | 29 | 76 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Cleaning booster6 Oct 2026US 12,753,369 B2Dow Global Technologies LLC
- Ambient moisture-activated hard surface treatment powder comprising a carbonate/persalt/sulfonium or phosphonium salt combination29 Sep 2026US 12,747,417 B2Sterilex, LLC
- Blends of N-acyl alaninates and other N-acyl amino acid surfactants and derivatives thereof22 Sep 2026US 12,742,134 B2The Procter & Gamble Company
- Hardness additive comprising a four chelant mixture and block detergents containing said mixture to improve edge hardening18 Aug 2026US 12,709,719 B2Ecolab USA Inc.
- Treatment compositions with modified amino acid multimers11 Aug 2026US 12,703,837 B2The Procter & Gamble Company
- Cleaning product8 Oct 2026US 2026/0308480 A1The Procter & Gamble Company
- Cleaning product8 Oct 2026US 2026/0308481 A1The Procter & Gamble Company
- Carbonate inhibiting composition8 Oct 2026US 2026/0308482 A1Nouryon Chemicals International B. V.
- Engine combustion chamber cleaning solution composition and cleaning method using the same1 Oct 2026US 2026/0297461 A1Kd Finechem Co., Ltd.
- Cleaning composition1 Oct 2026US 2026/0297463 A13M Innovative Properties Company
Most cited
By later US patents
- Bleach catalyst compositions and use thereof in laundry bleaching and detergent compositions201US 4,430,243 AThe Procter & Gamble Company · 1984
- Solid cleaning compositions based on hydrated salts141US 5,670,473 ASunburst Chemicals, Inc. · 1997
- Binding agent for solid block functional material128US 6,258,765 B1Ecolab Inc. · 2001
- Germicidal, acidic hard surface cleaning compositions125US 6,221,823 B1Reckitt Benckiser N.V. · 2001
- Detergent compositions containing ethylenediamine-N,N'-disuccinic acid121US 4,704,233 AThe Procter & Gamble Company · 1987