A45D 20/22
Helmets with hot air supply or ventilating means
Official title: Helmets with hot air supply or ventilating means, e.g. electrically heated air current
A45D20/22 (Helmets with hot air supply or ventilating means) appears on 194 US grants and 169 published applications in this corpus.
Search patents in A45D- Granted patents
- 194
- Published applications
- 169
- Assignees
- 89
- Inventors
- 370
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 4 | 0 |
| 1978 | 4 | 0 |
| 1979 | 2 | 0 |
| 1980 | 5 | 0 |
| 1981 | 8 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 5 | 0 |
| 1988 | 4 | 0 |
| 1989 | 2 | 0 |
| 1990 | 6 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 4 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 7 | 0 |
| 2001 | 4 | 0 |
| 2002 | 6 | 8 |
| 2003 | 3 | 6 |
| 2004 | 8 | 8 |
| 2005 | 6 | 7 |
| 2006 | 6 | 13 |
| 2007 | 0 | 10 |
| 2008 | 1 | 8 |
| 2009 | 4 | 3 |
| 2010 | 0 | 5 |
| 2011 | 2 | 2 |
| 2012 | 2 | 4 |
| 2013 | 1 | 0 |
| 2014 | 4 | 2 |
| 2015 | 2 | 6 |
| 2016 | 2 | 3 |
| 2017 | 3 | 5 |
| 2018 | 3 | 9 |
| 2019 | 4 | 4 |
| 2020 | 3 | 10 |
| 2021 | 7 | 13 |
| 2022 | 10 | 6 |
| 2023 | 8 | 9 |
| 2024 | 6 | 10 |
| 2025 | 10 | 14 |
| 2026 | 4 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- A45D 20/30Electric circuitry specially adapted for hair drying devices82
- A45D 20/38Arrangement of the electric heating means35
- A45D 20/24Shape or structure of the helmet body32
- A45D 20/42Additional devices or measures24
- A45D 20/26Guiding the air16
- A45D 20/34Arrangements of the ventilating means9
- A45D 20/32Supporting or fastening of the helmets8
- A45D 20/28Drying the air by incorporated heating elements4
All 9 subgroupsShow fewer
Recent patents
- Hairdryer1 Sep 2026US 12,721,415 B2LG Electronics Inc.
- Lava rock containing hair styling devices24 Mar 2026US 12,582,208 B2Farouk Systems, Inc.
- Apparatus for hair cooling and dehumidification3 Mar 2026US 12,564,254 B2
- System and method for an enhanced hair dryer6 Jan 2026US 12,514,353 B2Spur Concepts Inc.
- System and method for an enhanced hair dryer23 Dec 2025US 12,501,981 B1Spur Concepts Inc.
- Hair styler20 Aug 2026US 2026/0240298 A1LG Electronics Inc.
- System and method for an enhanced hair dryer26 Mar 2026US 2026/0083227 A1Spur Concepts Inc.
- Power distribution for temperature regulation of home appliances26 Mar 2026US 2026/0086585 A1
- Portable apparatus and associated methods12 Mar 2026US 2026/0069013 A1
- System and method for an enhanced hair dryer25 Dec 2025US 2025/0386914 A1Spur Concepts 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
- Device for drying hair113US 6,269,549 B1Conair Corporation · 2001
- 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