C11D 1/62
Quaternary ammonium compounds
C11D1/62 (Quaternary ammonium compounds) appears on 1,752 US grants and 1,430 published applications in this corpus.
Search patents in C11D- Granted patents
- 1,752
- Published applications
- 1,430
- Assignees
- 470
- Inventors
- 3,491
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 20 | 0 |
| 1977 | 16 | 0 |
| 1978 | 20 | 0 |
| 1979 | 18 | 0 |
| 1980 | 25 | 0 |
| 1981 | 26 | 0 |
| 1982 | 17 | 0 |
| 1983 | 12 | 0 |
| 1984 | 21 | 0 |
| 1985 | 18 | 0 |
| 1986 | 17 | 0 |
| 1987 | 14 | 0 |
| 1988 | 18 | 0 |
| 1989 | 26 | 0 |
| 1990 | 23 | 0 |
| 1991 | 14 | 0 |
| 1992 | 24 | 0 |
| 1993 | 20 | 0 |
| 1994 | 19 | 0 |
| 1995 | 46 | 0 |
| 1996 | 48 | 0 |
| 1997 | 33 | 0 |
| 1998 | 69 | 0 |
| 1999 | 78 | 0 |
| 2000 | 79 | 0 |
| 2001 | 61 | 19 |
| 2002 | 77 | 61 |
| 2003 | 66 | 86 |
| 2004 | 46 | 82 |
| 2005 | 53 | 71 |
| 2006 | 44 | 70 |
| 2007 | 35 | 56 |
| 2008 | 21 | 49 |
| 2009 | 17 | 35 |
| 2010 | 28 | 45 |
| 2011 | 26 | 57 |
| 2012 | 28 | 43 |
| 2013 | 31 | 59 |
| 2014 | 40 | 47 |
| 2015 | 37 | 39 |
| 2016 | 32 | 58 |
| 2017 | 36 | 55 |
| 2018 | 29 | 57 |
| 2019 | 44 | 72 |
| 2020 | 47 | 49 |
| 2021 | 50 | 63 |
| 2022 | 36 | 55 |
| 2023 | 39 | 69 |
| 2024 | 38 | 51 |
| 2025 | 38 | 50 |
| 2026 | 32 | 32 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Ambient moisture-activated hard surface treatment powder comprising a carbonate/persalt/sulfonium or phosphonium salt combination29 Sep 2026US 12,747,417 B2Sterilex, LLC
- Detergent composition and chemical-mechanical polishing composition comprising an alkanol hydroxylamine and polyglycerol derivative mixture22 Sep 2026US 12,742,133 B2Daicel Corporation
- Soil removal on cotton via treatment in the rinse step for enhanced cleaning in the subsequent wash1 Sep 2026US 12,723,221 B2Ecolab USA Inc.
- Alkyl etheramine polyglycerol surfactants25 Aug 2026US 12,714,100 B2Nouryon Chemicals International B. V.
- Particulate laundry softening wash additive11 Aug 2026US 12,703,841 B2The Procter & Gamble Company
- Treatment compositions containing rosins and certain non-ionic surfactants8 Oct 2026US 2026/0308487 A1The Procter & Gamble Company
- Laundry sanitizing compositions1 Oct 2026US 2026/0297458 A1Reckitt Benckiser N.V.
- Surfactant Potentiators for Ethoxylated Surfactants1 Oct 2026US 2026/0297459 A1Arxada AG
- Cleaning method for substrate accommodation container and cleaning apparatus for substrate accommodation container24 Sep 2026US 2026/0284723 A1Kioxia Corporation
- Optimizing the flow characteristics of liquid cleaning compositions17 Sep 2026US 2026/0275234 A1Reckitt & Colman (Overseas) Hygiene Home Limited
Most cited
By later US patents
- Autonomous surface cleaning robot for wet and dry cleaning295US 7,761,954 B2iRobot Corporation · 2010
- Fabric treatment materials277US 4,137,180 ALever Brothers Company · 1979
- Mid-chain branched surfactants193US 6,020,303 AThe Procter & Gamble Company · 2000
- Mid-chain branched alkyl sulfate surfactants175US 6,060,443 AThe Procter & Gamble Company · 2000
- Paper products containing a chemical softening composition170US 5,240,562 AThe Procter & Gamble Company · 1993