F04D 29/4226
Fan casings
Official title: {Fan casings}
F04D29/4226 (Fan casings) appears on 1,415 US grants and 1,801 published applications in this corpus.
Search patents in F04D- Granted patents
- 1,415
- Published applications
- 1,801
- Assignees
- 641
- Inventors
- 3,212
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 6 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 4 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 4 | 0 |
| 1990 | 7 | 0 |
| 1991 | 9 | 0 |
| 1992 | 6 | 0 |
| 1993 | 3 | 0 |
| 1994 | 4 | 0 |
| 1995 | 5 | 0 |
| 1996 | 6 | 0 |
| 1997 | 4 | 0 |
| 1998 | 5 | 0 |
| 1999 | 5 | 0 |
| 2000 | 9 | 0 |
| 2001 | 9 | 1 |
| 2002 | 14 | 17 |
| 2003 | 17 | 15 |
| 2004 | 10 | 15 |
| 2005 | 15 | 23 |
| 2006 | 8 | 30 |
| 2007 | 21 | 31 |
| 2008 | 11 | 36 |
| 2009 | 11 | 24 |
| 2010 | 14 | 34 |
| 2011 | 21 | 37 |
| 2012 | 24 | 53 |
| 2013 | 24 | 59 |
| 2014 | 27 | 58 |
| 2015 | 45 | 71 |
| 2016 | 53 | 110 |
| 2017 | 64 | 88 |
| 2018 | 82 | 114 |
| 2019 | 102 | 159 |
| 2020 | 97 | 116 |
| 2021 | 108 | 132 |
| 2022 | 120 | 123 |
| 2023 | 117 | 135 |
| 2024 | 126 | 127 |
| 2025 | 124 | 94 |
| 2026 | 55 | 99 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Fan assembly, heat dissipation assembly and electronic device6 Oct 2026US 12,757,350 B2Giga-Byte Technology Co., Ltd.
- Tow and ride debris blowers29 Sep 2026US 12,747,737 B2
- Air blowing apparatus with auxiliary fan housing and auxiliary baffle15 Sep 2026US 12,736,062 B2MTD Products Inc
- Fan assembly for displaying an image8 Sep 2026US 12,731,515 B2Magic Leap, Inc.
- Method for machining ribs or grooves for air or gas bearings of a rotary-shaft-comprising workpiece of a compressor, and method for assembling the components of the workpiece1 Sep 2026US 12,723,595 B2The Swatch Group Research and Development Ltd
- Multi-blade centrifugal air-sending device1 Oct 2026US 2026/0298258 A1Mitsubishi Electric Corporation
- Ultra-micro fan1 Oct 2026US 2026/0298262 A1Delta Electronics, Inc.
- Air blowing apparatus with auxiliary fan housing and auxiliary baffle24 Sep 2026US 2026/0286974 A1MTD Products Inc
- Impeller17 Sep 2026US 2026/0276000 A1Honeywell International Inc.
- Heating system and annealing furnace using such system17 Sep 2026US 2026/0276307 A1Ningbo Sachsen Industrial Technology Co.,Ltd.
Most cited
By later US patents
- Compact low noise efficient blower for CPAP devices351US 7,866,944 B2ResMed Motor Technologies Inc. · 2011
- Autonomous surface cleaning robot for wet and dry cleaning295US 7,761,954 B2iRobot Corporation · 2010
- System for reducing noise in a hydraulic fracturing fleet263US 9,587,649 B2U.S. Well Services, LLC · 2017
- Thermoelectric heat exchanger227US 6,119,463 AAmerigon Incorporated · 2000
- Thermoelectric heat exchanger196US 6,223,539 B1Amerigon Incorporated · 2001