A45D 20/40
For use of infrared rays
Official title: for use of infrared rays
A45D20/40 (For use of infrared rays) appears on 24 US grants and 32 published applications in this corpus.
Search patents in A45D- Granted patents
- 24
- Published applications
- 32
- Assignees
- 9
- Inventors
- 28
- Latest grant
- 6 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 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 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 2 |
| 2004 | 2 | 2 |
| 2005 | 1 | 0 |
| 2006 | 0 | 2 |
| 2007 | 0 | 1 |
| 2008 | 0 | 2 |
| 2009 | 1 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 1 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 1 | 5 |
| 2019 | 1 | 0 |
| 2020 | 3 | 3 |
| 2021 | 2 | 3 |
| 2022 | 0 | 0 |
| 2023 | 2 | 1 |
| 2024 | 2 | 0 |
| 2025 | 4 | 8 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- 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.
- System and method for an enhanced hair dryer30 Sep 2025US 12,426,696 B1Spur Concepts Inc.
- System and method for an enhanced hair dryer19 Aug 2025US 12,389,996 B1Spur Concepts Inc.
- System and method for an enhanced hair dryer5 Aug 2025US 12,376,661 B2Spur Concepts Inc.
- System and method for an enhanced hair dryer26 Mar 2026US 2026/0083227 A1Spur Concepts Inc.
- System and method for an enhanced hair dryer25 Dec 2025US 2025/0386914 A1Spur Concepts Inc.
- System and method for an enhanced hair dryer27 Nov 2025US 2025/0359644 A1Spur Concepts Inc.
- System and method for an enhanced hair dryer2 Oct 2025US 2025/0302174 A1Spur Concepts Inc.
- System and method for an enhanced hair dryer21 Aug 2025US 2025/0261734 A1Spur Concepts Inc.
Most cited
By later US patents
- System and method for an enhanced hair dryer30US 10,021,952 B2Spur Concepts Inc. · 2018
- Hair drier having a pad for generating far-infrared rays and anions and method for making the pad29US 6,798,982 B2Unix Electronics Co., Ltd. · 2004
- Heat treatment apparatus for heating human hair on the head25US 4,541,442 AWella Aktiengessellschaft · 1985
- Method and apparatus for drying hair22US 3,972,126 A1976
- Electric hair treatment appliance10US 6,606,800 B2Wella Aktiengesellschaft · 2003