A45D 4/16
Independent devices characterised by heating the hair-curling or hair-waving means before use
Official title: Independent devices characterised by heating the hair-curling or hair-waving means before use (A45D1/20 takes precedence)
A45D4/16 (Independent devices characterised by heating the hair-curling or hair-waving means before use) appears on 124 US grants and 57 published applications in this corpus.
Search patents in A45D- Granted patents
- 124
- Published applications
- 57
- Assignees
- 47
- Inventors
- 171
- Latest grant
- 24 Jun 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 4 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 4 | 0 |
| 1985 | 5 | 0 |
| 1986 | 8 | 0 |
| 1987 | 9 | 0 |
| 1988 | 3 | 0 |
| 1989 | 4 | 0 |
| 1990 | 2 | 0 |
| 1991 | 5 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 4 | 0 |
| 1995 | 1 | 0 |
| 1996 | 4 | 0 |
| 1997 | 5 | 0 |
| 1998 | 10 | 0 |
| 1999 | 4 | 0 |
| 2000 | 7 | 0 |
| 2001 | 3 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 4 |
| 2005 | 1 | 5 |
| 2006 | 2 | 2 |
| 2007 | 1 | 1 |
| 2008 | 0 | 2 |
| 2009 | 1 | 2 |
| 2010 | 1 | 3 |
| 2011 | 1 | 1 |
| 2012 | 2 | 5 |
| 2013 | 3 | 3 |
| 2014 | 2 | 4 |
| 2015 | 1 | 2 |
| 2016 | 1 | 2 |
| 2017 | 0 | 1 |
| 2018 | 0 | 2 |
| 2019 | 0 | 2 |
| 2020 | 2 | 3 |
| 2021 | 0 | 2 |
| 2022 | 3 | 3 |
| 2023 | 0 | 1 |
| 2024 | 3 | 4 |
| 2025 | 2 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Apparatus for curling hair24 Jun 2025US 12,336,611 B2
- Color conversion system and method11 Mar 2025US 12,245,680 B2B&R Holdings, LLC
- Heat enhanced hair-setting tool17 Sep 2024US 12,089,712 B2Hair4Good, LLC
- Heat-retaining clips for creating textured waves in hair23 Jul 2024US 12,042,034 B2
- Color conversion system and method9 Apr 2024US 11,950,683 B2B&R Holdings, LLC
- Heater for heating a metal eyelash curler and method therefor1 Oct 2026US 2026/0294066 A1
- Hair rollers assembly5 Jun 2025US 2025/0176692 A1Conair Corporation
- Heat Enhanced Hair-Setting Tool12 Dec 2024US 2024/0407517 A1Hair4Good, LLC
- Color conversion system and method3 Oct 2024US 2024/0324754 A1B&R Holdings, LLC
- Hair Curler System16 May 2024US 2024/0156230 A1
Most cited
By later US patents
- Curling iron organizer with temperature display61US 5,794,799 A1998
- Microwave activated heating element45US 4,743,726 A1988
- Hair curling iron and oven43US 4,103,145 A1978
- Heatable flexible hair curlers39US 4,834,118 AClairol Incorporated · 1989
- Apparatus and method for heating and moistening hair rollers using steam and hair rollers for use therewith29US 5,286,949 A1994