A45D 20/122
Diffusers
Official title: {Diffusers, e.g. for variable air flow}
A45D20/122 (Diffusers) appears on 194 US grants and 280 published applications in this corpus.
Search patents in A45D- Granted patents
- 194
- Published applications
- 280
- Assignees
- 91
- Inventors
- 436
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 5 | 0 |
| 1995 | 5 | 0 |
| 1996 | 2 | 0 |
| 1997 | 5 | 0 |
| 1998 | 6 | 0 |
| 1999 | 4 | 0 |
| 2000 | 4 | 0 |
| 2001 | 1 | 1 |
| 2002 | 1 | 0 |
| 2003 | 0 | 4 |
| 2004 | 2 | 2 |
| 2005 | 1 | 3 |
| 2006 | 2 | 0 |
| 2007 | 1 | 4 |
| 2008 | 0 | 1 |
| 2009 | 2 | 4 |
| 2010 | 0 | 2 |
| 2011 | 0 | 2 |
| 2012 | 3 | 1 |
| 2013 | 0 | 9 |
| 2014 | 3 | 7 |
| 2015 | 5 | 6 |
| 2016 | 4 | 17 |
| 2017 | 6 | 13 |
| 2018 | 8 | 14 |
| 2019 | 10 | 11 |
| 2020 | 15 | 10 |
| 2021 | 5 | 32 |
| 2022 | 12 | 12 |
| 2023 | 15 | 19 |
| 2024 | 13 | 46 |
| 2025 | 16 | 35 |
| 2026 | 13 | 25 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Haircare appliance29 Sep 2026US 12,745,828 B2Dyson Technology Limited
- Identification of hair care appliance attachments4 Aug 2026US 12,696,964 B2SharkNinja Operating LLC
- Haircare appliance21 Jul 2026US 12,685,377 B2Dyson Technology Limited
- Attachment for hair care appliance14 Jul 2026US 12,677,922 B2SharkNinja Operating LLC
- Hair dryer16 Jun 2026US 12,653,291 B2LG Electronics Inc.
- A haircare appliance8 Oct 2026US 2026/0305786 A1Dyson Technology Limited
- Hair styling appliance with baffle(s)8 Oct 2026US 2026/0305790 A1Dyson Operations PTE. LTD.
- Attachment for hair care appliance1 Oct 2026US 2026/0294070 A1
- Hair dryer1 Oct 2026US 2026/0294071 A1Dyson Technology Limited
- Hair styling device, attachment for a handle of a hair styling device, and method for straightening or curling hair using the hair styling device17 Sep 2026US 2026/0272136 A1Dyson Technology Limited
Most cited
By later US patents
- Hair dryer with safety guard air outlet nozzle145US 3,943,329 AClairol Incorporated · 1976
- Grille assembly for hair driers105US 5,317,815 A1994
- Rotary vane nozzle103US 4,878,620 A1989
- Variable airflow hair treatment device82US 4,232,454 AClairol Incorporated · 1980
- Air heater gun for joint compound with fan-shaped attachment76US 5,671,321 A1997