A45D 20/30
Electric circuitry specially adapted for hair drying devices
A45D20/30 (Electric circuitry specially adapted for hair drying devices) appears on 82 US grants and 67 published applications in this corpus.
Search patents in A45D- Granted patents
- 82
- Published applications
- 67
- Assignees
- 53
- Inventors
- 182
- Latest grant
- 18 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 4 | 0 |
| 1988 | 4 | 0 |
| 1989 | 2 | 0 |
| 1990 | 4 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 1 |
| 2003 | 0 | 1 |
| 2004 | 5 | 3 |
| 2005 | 4 | 5 |
| 2006 | 4 | 8 |
| 2007 | 0 | 5 |
| 2008 | 0 | 4 |
| 2009 | 1 | 2 |
| 2010 | 0 | 2 |
| 2011 | 2 | 1 |
| 2012 | 1 | 1 |
| 2013 | 0 | 0 |
| 2014 | 1 | 1 |
| 2015 | 0 | 2 |
| 2016 | 0 | 0 |
| 2017 | 1 | 2 |
| 2018 | 0 | 2 |
| 2019 | 2 | 3 |
| 2020 | 0 | 3 |
| 2021 | 3 | 6 |
| 2022 | 4 | 4 |
| 2023 | 3 | 2 |
| 2024 | 2 | 1 |
| 2025 | 6 | 5 |
| 2026 | 0 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Dual-power portable-use hair dryer18 Nov 2025US 12,471,688 B2
- Hairdryer control method, device and storage medium21 Oct 2025US 12,452,959 B2Dreame Technology (Shanghai) Co., Ltd.
- Power distribution for temperature regulation of home appliances23 Sep 2025US 12,422,869 B2SharkNinja Operating LLC
- Household appliance having an improved fan and motor assembly and fan and motor assembly for same9 Sep 2025US 12,410,813 B2Omachron Intellectual Property Inc.
- Hair dryer having reverse blowing dust-removal function12 Aug 2025US 12,383,040 B2Shenzhen Wizevo Technology Co., Ltd.
- Hair styler20 Aug 2026US 2026/0240298 A1LG Electronics Inc.
- Power distribution for temperature regulation of home appliances26 Mar 2026US 2026/0086585 A1
- Portable apparatus and associated methods12 Mar 2026US 2026/0069013 A1
- Hairstyling apparatus with reconfigurable current flows13 Nov 2025US 2025/0344827 A1Dyson Technology Limited
- Household appliance having an improved fan and motor assembly and fan and motor assembly for same14 Aug 2025US 2025/0257738 A1Omachron Intellectual Property Inc.
Most cited
By later US patents
- Proximity safety switch suitable for use in a hair dryer for disabling operation646US 6,784,775 B2LJM Associates, Inc. · 2004
- Hair dryer apparatus adapted for multi-functional usage120US 5,568,691 ASecajo, Ltd. · 1996
- Personal-care apparatus comprising a capacitive on/off switch71US 5,453,644 AU. S. Philips Corporation · 1995
- Hair dryer apparatus adapted for multi-functional usage70US 5,351,417 ASecajo, Ltd. · 1994
- Vacuum cleaner comprising a suction tube and suction tube provided with a remote-control circuit comprising a capacitive sensor59US 5,353,468 AU. S. Philips Corporation · 1994