A61K 2800/4324
In preparations for permanently dyeing the hair
Official title: in preparations for permanently dyeing the hair
A61K2800/4324 (In preparations for permanently dyeing the hair) appears on 288 US grants and 417 published applications in this corpus.
Search patents in A61K- Granted patents
- 288
- Published applications
- 417
- Assignees
- 71
- Inventors
- 548
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 2 |
| 2004 | 0 | 2 |
| 2005 | 1 | 4 |
| 2006 | 0 | 2 |
| 2007 | 3 | 0 |
| 2008 | 1 | 2 |
| 2009 | 0 | 5 |
| 2010 | 4 | 7 |
| 2011 | 7 | 2 |
| 2012 | 8 | 7 |
| 2013 | 5 | 7 |
| 2014 | 3 | 8 |
| 2015 | 2 | 34 |
| 2016 | 16 | 54 |
| 2017 | 34 | 51 |
| 2018 | 40 | 28 |
| 2019 | 32 | 24 |
| 2020 | 23 | 34 |
| 2021 | 28 | 34 |
| 2022 | 33 | 43 |
| 2023 | 13 | 20 |
| 2024 | 11 | 12 |
| 2025 | 15 | 24 |
| 2026 | 6 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for dyeing keratinous material, in particular human hair6 Oct 2026US 12,751,907 B2Henkel AG & Co. KGaA
- Aqueous oxidative composition comprising xanthine derivatives8 Sep 2026US 12,728,082 B2Kao Corporation
- Hair colorant compositions21 Jul 2026US 12,685,705 B2
- Agent for oxidative dyeing of keratin fibers, containing isatin and at least one defined polymer12 May 2026US 12,622,856 B2Henkel AG & Co. KGaA
- Compositions for dyeing keratin fibers21 Apr 2026US 12,605,313 B2Revlon Consumer Products Corporation
- Dyeing product for keratin fibers comprising ammonium salts1 Oct 2026US 2026/0294754 A1Kao Corporation
- Process for removing the colour from previously dyed keratinous hair fibres27 Aug 2026US 2026/0248268 A1L'oreal
- Hair dyeing method30 Jul 2026US 2026/0216017 A1L'oreal
- Compositions for dyeing keratin fibers30 Jul 2026US 2026/0216018 A1Revlon Consumer Products Corporation
- Composition comprising at least n,n-dicarboxymethylglutamic acid, at least one colouring agent and at least one fatty amine30 Jul 2026US 2026/0216027 A1L'oreal
Most cited
By later US patents
- Two-stage process for dyeing keratin fibres68US 4,425,132 AL'oreal · 1984
- Compositions and processes for dyeing keratin fibers with an oxidation base, a coupler, a cationic direct dye, and an oxidizing agent36US 5,879,412 AL'oreal · 1999
- Keratin dyeing compounds, keratin dyeing compositions containing them, and use thereof24US 7,297,168 B2The Procter & Gamble Company · 2007
- Process for simultaneously waving and coloring hair22US 5,161,553 AClairol Incorporated · 1992
- Methods for manufacturing an aerosol product22US 9,828,170 B2Daizo Corporation · 2017