A45D 2/001
Hair straightening appliances
Official title: {Hair straightening appliances}
A45D2/001 (Hair straightening appliances) appears on 337 US grants and 635 published applications in this corpus.
Search patents in A45D- Granted patents
- 337
- Published applications
- 635
- Assignees
- 162
- Inventors
- 825
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 5 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 4 | 0 |
| 2002 | 2 | 3 |
| 2003 | 3 | 3 |
| 2004 | 3 | 11 |
| 2005 | 2 | 9 |
| 2006 | 2 | 8 |
| 2007 | 2 | 6 |
| 2008 | 1 | 6 |
| 2009 | 7 | 15 |
| 2010 | 1 | 23 |
| 2011 | 7 | 22 |
| 2012 | 12 | 22 |
| 2013 | 19 | 21 |
| 2014 | 10 | 19 |
| 2015 | 16 | 42 |
| 2016 | 13 | 54 |
| 2017 | 17 | 43 |
| 2018 | 16 | 48 |
| 2019 | 26 | 22 |
| 2020 | 26 | 43 |
| 2021 | 28 | 20 |
| 2022 | 14 | 31 |
| 2023 | 21 | 40 |
| 2024 | 22 | 50 |
| 2025 | 16 | 46 |
| 2026 | 24 | 28 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Volume hair dryer brush6 Oct 2026US 12,751,532 B2
- Straightening comb with elastic floating teeth6 Oct 2026US 12,751,533 B2Dongguan Jinfeng Science and Technology Co., Ltd.
- Hair straightening appliance with adjustable heat plate1 Sep 2026US 12,721,413 B2Conair Corporation
- Hair styling appliance25 Aug 2026US 12,714,215 B2Dyson Technology Limited
- Methods and systems for a hair lengthening device18 Aug 2026US 12,708,185 B2
- A haircare appliance8 Oct 2026US 2026/0305786 A1Dyson Technology Limited
- Hair styling appliance with baffle(s)8 Oct 2026US 2026/0305790 A1Dyson Operations PTE. LTD.
- Methods and systems for a hair lengthening device1 Oct 2026US 2026/0294065 A1
- Attachment for a haircare appliance1 Oct 2026US 2026/0294072 A1Dyson Technology Limited
- Adjustable tension hairstyling tool24 Sep 2026US 2026/0283320 A1L'ange Hair, Inc.
Most cited
By later US patents
- Electrically heating hair styling tongs selectively usable to crimp or straighten hair72US 4,739,151 AS. A. Faco · 1988
- Electrically heated hair straightener and PTC heater assembly therefor45US 4,242,567 AGeneral Electric Company · 1980
- PTC heating device having selectively variable temperature levels36US 4,151,401 AU. S. Philips Corporation · 1979
- Hair styling iron for straightening and curling36US 5,957,140 A1999
- Manual hairdressing and styling device35US 6,223,753 B12001