A45D 7/04
Chemical
Official title: chemical
A45D7/04 (Chemical) appears on 207 US grants and 257 published applications in this corpus.
Search patents in A45D- Granted patents
- 207
- Published applications
- 257
- Assignees
- 81
- Inventors
- 479
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 6 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 4 | 0 |
| 1986 | 6 | 0 |
| 1987 | 5 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 5 | 0 |
| 1991 | 7 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 4 | 0 |
| 2001 | 1 | 0 |
| 2002 | 4 | 1 |
| 2003 | 3 | 5 |
| 2004 | 1 | 2 |
| 2005 | 0 | 0 |
| 2006 | 0 | 4 |
| 2007 | 1 | 3 |
| 2008 | 0 | 5 |
| 2009 | 0 | 2 |
| 2010 | 1 | 3 |
| 2011 | 3 | 5 |
| 2012 | 1 | 6 |
| 2013 | 4 | 15 |
| 2014 | 6 | 20 |
| 2015 | 11 | 34 |
| 2016 | 17 | 33 |
| 2017 | 20 | 31 |
| 2018 | 12 | 21 |
| 2019 | 14 | 8 |
| 2020 | 8 | 10 |
| 2021 | 8 | 8 |
| 2022 | 7 | 9 |
| 2023 | 4 | 7 |
| 2024 | 5 | 12 |
| 2025 | 5 | 5 |
| 2026 | 2 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Keratin-based hair straightening formulations, methods and systems19 May 2026US 12,629,327 B2Beauty Biolabs LLC
- Selection of a chemical compound applicable on a class of human hairs20 Jan 2026US 12,527,389 B2Wella Germany GmbH
- Process for permanent waving keratin fibers2 Sep 2025US 12,403,074 B2Kao Germany GmbH
- Hair curling system15 Jul 2025US 12,357,069 B2Cali-Curl, LLC
- Methods for treating relaxed hair18 Mar 2025US 12,251,456 B2Olaplex, Inc.
- Cosmetic systems for structural modification of hair fibers using lignin starch nanoparticles1 Oct 2026US 2026/0294776 A1
- Process for Curling Eyelashes Using a Composition Comprising Cysteine and an Organic Base6 Aug 2026US 2026/0224461 A1L'oreal
- Systems and Methods of Altering Hair Texture23 Jul 2026US 2026/0206934 A1
- Keratin fibre treatment process using a particular divalent or trivalent fatty acid salt and composition comprising said salt16 Jul 2026US 2026/0199205 A1L'oreal
- Improved straightening process for keratin fibers16 Jul 2026US 2026/0199206 A1L'oreal
Most cited
By later US patents
- Self-molding permanent agent and method for proceeding free-rod and free-band type permanent52US 8,613,913 B2Korea Research Institute of Chemical Technology · 2013
- Keratin treatment formulations and methods50US 9,326,926 B2Liqwd, Inc. · 2016
- Devices for use in selectively altering hair color43US 4,211,247 A1980
- Method of treating hair in which a part of a length of a tress of hair protected while another part of the length of the tress of hair is treated31US 5,584,309 A1996
- Waving and straightening hair by producing metal chelates in the keratin of the hair30US 3,973,574 A1976