A45D 20/525
By an independent heating source
Official title: {by an independent heating source}
A45D20/525 (By an independent heating source) appears on 31 US grants and 40 published applications in this corpus.
Search patents in A45D- Granted patents
- 31
- Published applications
- 40
- Assignees
- 15
- Inventors
- 73
- Latest grant
- 28 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 2 |
| 2004 | 1 | 2 |
| 2005 | 1 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 4 |
| 2008 | 0 | 2 |
| 2009 | 0 | 1 |
| 2010 | 2 | 3 |
| 2011 | 0 | 5 |
| 2012 | 1 | 2 |
| 2013 | 3 | 1 |
| 2014 | 2 | 2 |
| 2015 | 1 | 1 |
| 2016 | 1 | 1 |
| 2017 | 0 | 3 |
| 2018 | 1 | 0 |
| 2019 | 0 | 2 |
| 2020 | 1 | 1 |
| 2021 | 1 | 2 |
| 2022 | 1 | 2 |
| 2023 | 2 | 1 |
| 2024 | 0 | 1 |
| 2025 | 2 | 0 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Methods and devices for hair treatment30 Apr 2026US 2026/0114569 A1Sparkcare Ltd
- Brush attachment for hair care appliance19 Sep 2024US 2024/0306788 A1
- Hairbrush Heating Device14 Dec 2023US 2023/0397715 A1
- Hair comb set structure1 Dec 2022US 2022/0378187 A1
- Device for displaying and packaging hairdressing instruments17 Feb 2022US 2022/0047053 A1Scpi
Most cited
By later US patents
- Detachable hairbrush77US 5,992,423 A1999
- System for professional round brush blow-drying60US 6,070,597 AM Head, LLC · 2000
- Hairbrush with removable handle and hairbrush system utilizing the same49US 6,230,716 B12001
- Hair curling brush and method of using same42US 5,887,600 A1999
- Hairstyling device having coupling and interchangeable heads40US 6,502,585 B12003