A45D 20/24
Shape or structure of the helmet body
Official title: Shape or structure of the helmet body (A45D20/26 takes precedence)
A45D20/24 (Shape or structure of the helmet body) appears on 32 US grants and 26 published applications in this corpus.
Search patents in A45D- Granted patents
- 32
- Published applications
- 26
- Assignees
- 19
- Inventors
- 58
- Latest grant
- 24 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 4 |
| 2003 | 2 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 1 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 1 | 1 |
| 2013 | 1 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 2 |
| 2021 | 1 | 2 |
| 2022 | 4 | 2 |
| 2023 | 0 | 3 |
| 2024 | 1 | 3 |
| 2025 | 1 | 1 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- 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
- Dual-power portable-use hair dryer18 Nov 2025US 12,471,688 B2
- Hair freedom customizable tunnel system, method, device and kit2 Jan 2024US 11,857,053 B2
- Lava rock containing hair styling devices20 Dec 2022US 11,528,980 B2Farouk Systems, Inc.
- Hair freedom customizable tunnel system, method, device and kit23 Oct 2025US 2025/0325085 A1
- Airflow hood for hair dryer12 Dec 2024US 2024/0407524 A1Shenzhen Jin Wei Xin Industrial Co., Ltd.
- Hair freedom customizable tunnel system, method, device and kit30 May 2024US 2024/0172856 A1
- Hair drying unit7 Mar 2024US 2024/0074559 A1
- Apparatus for hair cooling and dehumidification23 Mar 2023US 2023/0090816 A1Tight & Right Hair Revolution, Inc.
Most cited
By later US patents
- Hair processing apparatus utilizing a plurality of infrared units positionable about the head36US 4,914,273 ATakara Belmont Corporation · 1990
- Infra-red hair dryer34US 4,910,382 ATakara Belmont Corporation · 1990
- Electric hair treatment apparatus having heated air delivery arm rotatable in conical path about the hair being treated26US 5,268,988 ATakara Belmont Corporation · 1993
- Heat treatment apparatus for heating human hair on the head25US 4,541,442 AWella Aktiengessellschaft · 1985
- Hair dryer23US 4,691,451 A1987