A61K 8/416
Quaternary ammonium compounds
Official title: {Quaternary ammonium compounds (A61K8/35 takes precedence)}
A61K8/416 (Quaternary ammonium compounds) appears on 1,753 US grants and 2,204 published applications in this corpus.
Search patents in A61K- Granted patents
- 1,753
- Published applications
- 2,204
- Assignees
- 639
- Inventors
- 4,279
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 17 | 0 |
| 1977 | 18 | 0 |
| 1978 | 30 | 0 |
| 1979 | 15 | 0 |
| 1980 | 20 | 0 |
| 1981 | 11 | 0 |
| 1982 | 13 | 0 |
| 1983 | 10 | 0 |
| 1984 | 7 | 0 |
| 1985 | 14 | 0 |
| 1986 | 10 | 0 |
| 1987 | 13 | 0 |
| 1988 | 18 | 0 |
| 1989 | 19 | 0 |
| 1990 | 27 | 0 |
| 1991 | 25 | 0 |
| 1992 | 18 | 0 |
| 1993 | 17 | 0 |
| 1994 | 24 | 0 |
| 1995 | 16 | 0 |
| 1996 | 16 | 0 |
| 1997 | 60 | 0 |
| 1998 | 33 | 0 |
| 1999 | 46 | 0 |
| 2000 | 39 | 0 |
| 2001 | 37 | 19 |
| 2002 | 37 | 45 |
| 2003 | 45 | 74 |
| 2004 | 27 | 50 |
| 2005 | 21 | 54 |
| 2006 | 20 | 67 |
| 2007 | 20 | 52 |
| 2008 | 13 | 64 |
| 2009 | 18 | 45 |
| 2010 | 23 | 59 |
| 2011 | 32 | 57 |
| 2012 | 43 | 69 |
| 2013 | 45 | 67 |
| 2014 | 47 | 120 |
| 2015 | 62 | 108 |
| 2016 | 53 | 129 |
| 2017 | 56 | 137 |
| 2018 | 66 | 113 |
| 2019 | 73 | 126 |
| 2020 | 66 | 133 |
| 2021 | 89 | 160 |
| 2022 | 81 | 136 |
| 2023 | 76 | 110 |
| 2024 | 64 | 81 |
| 2025 | 65 | 71 |
| 2026 | 38 | 58 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Hair conditioning composition29 Sep 2026US 12,746,192 B2Conopco, Inc.
- Cationic material for tooth desensitization, preparation method therefor, and application thereof15 Sep 2026US 12,734,116 B2Beijing Piezo-Dent Medical Technology Co., Ltd
- Hair conditioning composition for improved deposition18 Aug 2026US 12,708,597 B2Conopco, Inc.
- Composition for caring for a keratin material18 Aug 2026US 12,708,598 B2L'oreal
- Cosmetic composition comprising a polyhydroxyalkanoate copolymer bearing a(n) (un)saturated hydrocarbon-based chain and a surfactant11 Aug 2026US 12,702,635 B2L'oreal
- Hair treatment agent8 Oct 2026US 2026/0306375 A1Nikko Chemicals Co., Ltd.
- Hair fiber strengthening compositions8 Oct 2026US 2026/0306376 A1
- Hair treatment composition8 Oct 2026US 2026/0306384 A1
- Antiperspirant composition1 Oct 2026US 2026/0294757 A1Conopco, Inc., d/b/a UNILEVER
- Alkenone-based formulations for topical applications1 Oct 2026US 2026/0294759 A1Western Washington University
Most cited
By later US patents
- Amphoteric compositions and polymeric forms of alpha hydroxyacids, and their therapeutic use354US 5,091,171 A1992
- Quaternized polymer for use as a cosmetic agent in cosmetic compositions for the hair and skin301US 4,217,914 AL'oreal · 1980
- Foaming cleansing products236US 5,635,469 AThe Procter & Gamble Company · 1997
- Hair dyeing compositions containing quaternized polymer234US 4,422,853 AL'oreal · 1983
- Fast dissolving orally comsumable films222US 6,596,298 B2Warner-Lambert Company · 2003