A45D 19/022
For applying simultaneously two or more substances
Official title: {for applying simultaneously two or more substances, e.g. colouring agents, to the hair without prior mixing}
A45D19/022 (For applying simultaneously two or more substances) appears on 34 US grants and 48 published applications in this corpus.
Search patents in A45D- Granted patents
- 34
- Published applications
- 48
- Assignees
- 16
- Inventors
- 87
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 2 | 1 |
| 2009 | 0 | 1 |
| 2010 | 0 | 1 |
| 2011 | 1 | 0 |
| 2012 | 1 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 6 |
| 2015 | 0 | 1 |
| 2016 | 2 | 4 |
| 2017 | 3 | 5 |
| 2018 | 2 | 4 |
| 2019 | 3 | 5 |
| 2020 | 0 | 1 |
| 2021 | 1 | 4 |
| 2022 | 4 | 3 |
| 2023 | 1 | 5 |
| 2024 | 2 | 1 |
| 2025 | 2 | 2 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Application of hair-coloring compositions11 Feb 2025US 12,220,033 B2Applimind Ltd.
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- Hair Treatment Formulations, Dispensing Devices, And Methods19 Mar 2026US 2026/0076880 A1True Colors Chemistry, Inc.
- Application Of Hair-Coloring Compositions30 Jan 2025US 2025/0031824 A1Applimind Ltd.
- Formula delivery appliance2 Jan 2025US 2025/0000226 A1L'oreal
- Modular Multi-Chamber Fluid Dispenser25 Jan 2024US 2024/0023687 A1Codeage LLC
Most cited
By later US patents
- Hair treatment devices and packaging therefor45US 4,209,027 A1980
- Modular brush for user-selected hair streaking22US 5,337,765 A1994
- Modular hair treatment brush having multi-sided rotatable modules18US 5,427,120 A1995
- Hand held device for delivering a plurality of hair color formulas to human hair16US 6,012,462 A2000
- Channel coloring system16US 7,322,365 B22008