F04D 29/4233
With volutes extending mainly in axial or radially inward direction
Official title: {with volutes extending mainly in axial or radially inward direction}
F04D29/4233 (With volutes extending mainly in axial or radially inward direction) appears on 130 US grants and 154 published applications in this corpus.
Search patents in F04D- Granted patents
- 130
- Published applications
- 154
- Assignees
- 115
- Inventors
- 303
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 3 | 0 |
| 2002 | 0 | 2 |
| 2003 | 2 | 1 |
| 2004 | 2 | 5 |
| 2005 | 3 | 3 |
| 2006 | 0 | 4 |
| 2007 | 4 | 5 |
| 2008 | 3 | 9 |
| 2009 | 2 | 1 |
| 2010 | 2 | 4 |
| 2011 | 1 | 2 |
| 2012 | 1 | 7 |
| 2013 | 3 | 3 |
| 2014 | 3 | 2 |
| 2015 | 4 | 9 |
| 2016 | 4 | 22 |
| 2017 | 9 | 12 |
| 2018 | 7 | 7 |
| 2019 | 18 | 15 |
| 2020 | 10 | 7 |
| 2021 | 11 | 9 |
| 2022 | 5 | 4 |
| 2023 | 6 | 11 |
| 2024 | 4 | 4 |
| 2025 | 8 | 2 |
| 2026 | 3 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Blower device and respirator including blower device18 Aug 2026US 12,710,060 B2Bmc Medical Co., Ltd.
- Housing for centrifugal compressor, centrifugal compressor, and method for producing a housing for a centrifugal compressor30 Jun 2026US 12,669,133 B2vdLee B.V.
- Ventilation fan19 May 2026US 12,631,195 B1Broan-NuTone LLC
- Air cleaning blower systems, methods, and adaptations30 Sep 2025US 12,427,462 B2Andover Protection Systems, LLC
- Air-cooled refrigerator supplying air through centrifugal fan26 Aug 2025US 12,398,940 B2Haier Smart Home Co., Ltd.
- Volute, fan and air conditioner30 Jul 2026US 2026/0218722 A1Gd Midea Air-Conditioning Equipment Co., Ltd.
- Radial Fan18 Jun 2026US 2026/0168503 A1Mahle International GmbH
- Bladeless fan lamp28 May 2026US 2026/0146628 A1Ningbo Goneo Electric Appliance Co., Ltd.
- Housing for Centrifugal Compressor, Centrifugal Compressor, and Method for Producing a Housing for a Centrifugal Compressor26 Feb 2026US 2026/0055777 A1vdLee B.V.
- Fan impeller with turbulance-reducing blades9 Oct 2025US 2025/0314256 A1Intel Corporation
Most cited
By later US patents
- Autonomous surface cleaning robot for wet and dry cleaning295US 7,761,954 B2iRobot Corporation · 2010
- Autonomous surface cleaning robot for wet and dry cleaning106US 8,387,193 B2iRobot Corporation · 2013
- Autonomous surface cleaning robot for wet and dry cleaning84US 8,670,866 B2iRobot Corporation · 2014
- Dual fan blower with axial expansion58US 6,896,478 B2Visteon Global Technologies, Inc. · 2005
- Centrifugal multiblade blower49US 6,604,906 B2Calsonic Kansei Corporation · 2003