A01N 41/04
Sulfonic acids
Official title: Sulfonic acids; Derivatives thereof
A01N41/04 (Sulfonic acids) appears on 684 US grants and 570 published applications in this corpus.
Search patents in A01N- Granted patents
- 684
- Published applications
- 570
- Assignees
- 323
- Inventors
- 1,643
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 2 | 0 |
| 1978 | 16 | 0 |
| 1979 | 17 | 0 |
| 1980 | 18 | 0 |
| 1981 | 11 | 0 |
| 1982 | 13 | 0 |
| 1983 | 12 | 0 |
| 1984 | 18 | 0 |
| 1985 | 17 | 0 |
| 1986 | 12 | 0 |
| 1987 | 12 | 0 |
| 1988 | 17 | 0 |
| 1989 | 16 | 0 |
| 1990 | 23 | 0 |
| 1991 | 15 | 0 |
| 1992 | 10 | 0 |
| 1993 | 9 | 0 |
| 1994 | 7 | 0 |
| 1995 | 9 | 0 |
| 1996 | 13 | 0 |
| 1997 | 12 | 0 |
| 1998 | 16 | 0 |
| 1999 | 7 | 0 |
| 2000 | 12 | 0 |
| 2001 | 10 | 1 |
| 2002 | 15 | 9 |
| 2003 | 6 | 12 |
| 2004 | 3 | 17 |
| 2005 | 4 | 12 |
| 2006 | 1 | 9 |
| 2007 | 6 | 14 |
| 2008 | 6 | 8 |
| 2009 | 10 | 14 |
| 2010 | 6 | 25 |
| 2011 | 5 | 15 |
| 2012 | 5 | 20 |
| 2013 | 12 | 49 |
| 2014 | 22 | 40 |
| 2015 | 35 | 42 |
| 2016 | 34 | 32 |
| 2017 | 30 | 30 |
| 2018 | 25 | 21 |
| 2019 | 27 | 31 |
| 2020 | 24 | 31 |
| 2021 | 17 | 21 |
| 2022 | 10 | 26 |
| 2023 | 9 | 32 |
| 2024 | 15 | 25 |
| 2025 | 16 | 25 |
| 2026 | 11 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Ionic liquids for transdermal drug delivery6 Oct 2026US 12,752,009 B2Arizona Board of Regents
- Compositions for disrupting biofilm formation and for treating biofilm-related disorders18 Aug 2026US 12,708,612 B2AHV International B.V.
- Sulfonamide apyrase inhibitors21 Jul 2026US 12,685,312 B2Texas Crop Science, Inc.
- Acid/anionic antimicrobial and virucidal compositions and uses thereof23 Jun 2026US 12,660,817 B2Ecolab USA Inc.
- Surfactant combination for aqueous agrochemical (crop protection) suspension formulations with high salt content and low-concentration of sulfonylurea herbicide9 Jun 2026US 12,648,563 B2Bayer Aktiengesellschaft
- Novel carboxamide and sulfonamide pesticidal compounds30 Jul 2026US 2026/0215423 A1Syngenta Crop Protection AG
- Novel bicyclic-carboxamide compounds useful as pesticides23 Jul 2026US 2026/0206751 A1Syngenta Crop Protection AG
- Methods of controlling undesirable plants with ppo herbicides and combinations in herbicide tolerant crop plants23 Jul 2026US 2026/0206757 A1BASF Agro B.V.
- Methods to reduce contamination, biofilm and fouling from water systems, surfaces, and products21 May 2026US 2026/0137086 A1Aequor, Inc.
- Reduced misting peracid based cleaning, sanitizing, and disinfecting compositions via the use of high molecular weight polymers30 Apr 2026US 2026/0114448 A1Ecolab USA Inc.
Most cited
By later US patents
- Cycloalkanecarboxanilide derivative herbicides94US 4,166,735 AShell Oil Company · 1979
- Antimicrobial and antiviral compositions and treatments for food surfaces84US 6,534,075 B1Ecolab Inc. · 2003
- Phenoxyphenylthioalkanecarboxylic acid amides and their use as herbicides and plant growth regulants83US 4,349,377 ACiba-Geigy Corporation · 1982
- Herbicidal diphenyl ether and nitrogen solution compositions and method78US 5,563,112 AZeneca Limited · 1996
- Antimicrobial compositions and methods of using same76US 4,766,113 AChapman Chemical Company · 1988