C11D 1/12
Sulfonic acids or sulfuric acid esters
Official title: Sulfonic acids or sulfuric acid esters; Salts thereof
C11D1/12 (Sulfonic acids or sulfuric acid esters) appears on 3,524 US grants and 2,971 published applications in this corpus.
Search patents in C11D- Granted patents
- 3,524
- Published applications
- 2,971
- Assignees
- 775
- Inventors
- 6,393
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 64 | 0 |
| 1977 | 35 | 0 |
| 1978 | 36 | 0 |
| 1979 | 23 | 0 |
| 1980 | 23 | 0 |
| 1981 | 37 | 0 |
| 1982 | 30 | 0 |
| 1983 | 45 | 0 |
| 1984 | 41 | 0 |
| 1985 | 32 | 0 |
| 1986 | 24 | 0 |
| 1987 | 31 | 0 |
| 1988 | 33 | 0 |
| 1989 | 45 | 0 |
| 1990 | 33 | 0 |
| 1991 | 45 | 0 |
| 1992 | 41 | 0 |
| 1993 | 42 | 0 |
| 1994 | 57 | 0 |
| 1995 | 98 | 0 |
| 1996 | 89 | 0 |
| 1997 | 86 | 0 |
| 1998 | 149 | 0 |
| 1999 | 212 | 0 |
| 2000 | 143 | 0 |
| 2001 | 141 | 23 |
| 2002 | 126 | 74 |
| 2003 | 131 | 118 |
| 2004 | 87 | 105 |
| 2005 | 51 | 99 |
| 2006 | 57 | 87 |
| 2007 | 37 | 58 |
| 2008 | 29 | 71 |
| 2009 | 40 | 59 |
| 2010 | 47 | 75 |
| 2011 | 57 | 82 |
| 2012 | 54 | 59 |
| 2013 | 43 | 59 |
| 2014 | 50 | 75 |
| 2015 | 47 | 110 |
| 2016 | 55 | 142 |
| 2017 | 81 | 172 |
| 2018 | 85 | 177 |
| 2019 | 89 | 167 |
| 2020 | 100 | 165 |
| 2021 | 109 | 157 |
| 2022 | 101 | 186 |
| 2023 | 121 | 167 |
| 2024 | 99 | 181 |
| 2025 | 109 | 187 |
| 2026 | 84 | 116 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C11D 1/14Derived from aliphatic hydrocarbons or mono-alcohols1,744
- C11D 1/22Derived from aromatic compounds1,494
- C11D 1/29Sulfates of polyoxyalkylene ethers1,436
- C11D 1/28Sulfonation products derived from fatty acids or their derivatives424
- C11D 1/123Derived from carboxylic acids412
- C11D 1/126Acylisethionates223
- C11D 1/16Derived from divalent or polyvalent alcohols99
- C11D 1/18Derived from amino alcohols31
All 10 subgroupsShow fewer
Recent patents
- Dry-wash aerospace cleaning composition6 Oct 2026US 12,753,367 B2Henkel AG & Co. KGaA
- Cleansing composition6 Oct 2026US 12,753,376 B2Conopco, Inc.
- Sulfonate composition22 Sep 2026US 12,742,121 B2Kao Corporation
- Surfactant and detergent composition22 Sep 2026US 12,742,132 B2Conopco, Inc.
- Biosurfactant based micellar cleansing composition15 Sep 2026US 12,735,656 B2L'oreal
- Process for preparing chemical formulations comprising a neutralized component8 Oct 2026US 2026/0308478 A1Base SE
- Self-adhesive sanitary product comprising alkyl polyglycoside8 Oct 2026US 2026/0308489 A1Henkel AG & Co. KGaA
- Wash-active compounds based on a combination of anions and cationic detergent1 Oct 2026US 2026/0297456 A1Henkel AG & Co. KGaA
- Cleaning composition and cleaning method1 Oct 2026US 2026/0297457 A1Novozymes A/S
- Surfactant Potentiators for Ethoxylated Surfactants1 Oct 2026US 2026/0297459 A1Arxada AG
Most cited
By later US patents
- Foaming surfactant compositions383US 4,565,647 AThe Procter & Gamble Company · 1986
- Viscoelastic surfactant fluids and related methods of use217US 6,258,859 B1Rhodia Inc. · 2001
- 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
- Viscoelastic surfactant fluids and related methods of use173US 6,703,352 B2Schlumberger Technology Corporation · 2004