A45D 2/38
Surface-wave devices
A45D2/38 (Surface-wave devices) appears on 58 US grants and 73 published applications in this corpus.
Search patents in A45D- Granted patents
- 58
- Published applications
- 73
- Assignees
- 31
- Inventors
- 138
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 6 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 4 | 2 |
| 2003 | 2 | 0 |
| 2004 | 0 | 2 |
| 2005 | 0 | 2 |
| 2006 | 1 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 3 |
| 2009 | 0 | 1 |
| 2010 | 0 | 1 |
| 2011 | 2 | 2 |
| 2012 | 0 | 1 |
| 2013 | 1 | 2 |
| 2014 | 5 | 3 |
| 2015 | 1 | 4 |
| 2016 | 0 | 5 |
| 2017 | 1 | 14 |
| 2018 | 2 | 6 |
| 2019 | 1 | 3 |
| 2020 | 6 | 4 |
| 2021 | 4 | 2 |
| 2022 | 3 | 4 |
| 2023 | 1 | 0 |
| 2024 | 2 | 8 |
| 2025 | 2 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Hair styling apparatus21 Jul 2026US 12,685,375 B1Robots and Donuts
- Hair styling appliance30 Dec 2025US 12,507,779 B2Dyson Technology Limited
- Eyelash shaping implements21 Oct 2025US 12,446,673 B2
- Hair styling device, hair styling method and drive system10 Sep 2024US 12,082,672 B2Hd3 Limited
- Eyelash shaping implements5 Mar 2024US 11,918,095 B2
- Eyelash shaping implements12 Feb 2026US 2026/0041213 A1
- Marcel waver15 May 2025US 2025/0151869 A1Shenzhen Fenda Technology Co., Ltd.
- Hair styling device, hair styling method and drive system12 Dec 2024US 2024/0407518 A1Hd3 Limited
- Hair styling apparatus, temperature control systems, and methods for controlling hair styling apparatus14 Nov 2024US 2024/0374005 A1Spectrum Brands, Inc.
- Hair styling appliance11 Jul 2024US 2024/0225228 A1Dyson Technology Limited
Most cited
By later US patents
- Electrically heating hair styling tongs selectively usable to crimp or straighten hair72US 4,739,151 AS. A. Faco · 1988
- Manual hairdressing and styling device35US 6,223,753 B12001
- Hair iron for straight permanent31US 5,934,293 ACreate Co., Ltd. · 1999
- Process for crimping and tattooing hair29US 5,823,204 A1998
- Hair clip for heating and shaping root-area hair perpendicular to the scalp and an electric heating unit for heating the clips27US 5,294,777 AClairol Incorporated · 1994