F04D 29/4206
Especially adapted for elastic fluid pumps
Official title: {especially adapted for elastic fluid pumps}
F04D29/4206 (Especially adapted for elastic fluid pumps) appears on 2,801 US grants and 3,363 published applications in this corpus.
Search patents in F04D- Granted patents
- 2,801
- Published applications
- 3,363
- Assignees
- 1,026
- Inventors
- 5,921
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 3 | 0 |
| 1978 | 6 | 0 |
| 1979 | 5 | 0 |
| 1980 | 6 | 0 |
| 1981 | 9 | 0 |
| 1982 | 1 | 0 |
| 1983 | 4 | 0 |
| 1984 | 9 | 0 |
| 1985 | 5 | 0 |
| 1986 | 6 | 0 |
| 1987 | 10 | 0 |
| 1988 | 9 | 0 |
| 1989 | 6 | 0 |
| 1990 | 13 | 0 |
| 1991 | 12 | 0 |
| 1992 | 10 | 0 |
| 1993 | 7 | 0 |
| 1994 | 17 | 0 |
| 1995 | 15 | 0 |
| 1996 | 17 | 0 |
| 1997 | 13 | 0 |
| 1998 | 17 | 0 |
| 1999 | 14 | 0 |
| 2000 | 25 | 0 |
| 2001 | 26 | 9 |
| 2002 | 27 | 35 |
| 2003 | 40 | 24 |
| 2004 | 23 | 35 |
| 2005 | 25 | 50 |
| 2006 | 23 | 58 |
| 2007 | 38 | 61 |
| 2008 | 25 | 72 |
| 2009 | 27 | 58 |
| 2010 | 26 | 73 |
| 2011 | 51 | 82 |
| 2012 | 61 | 100 |
| 2013 | 52 | 110 |
| 2014 | 59 | 118 |
| 2015 | 87 | 178 |
| 2016 | 105 | 237 |
| 2017 | 155 | 217 |
| 2018 | 165 | 215 |
| 2019 | 237 | 264 |
| 2020 | 211 | 234 |
| 2021 | 203 | 236 |
| 2022 | 214 | 200 |
| 2023 | 204 | 207 |
| 2024 | 200 | 198 |
| 2025 | 183 | 148 |
| 2026 | 92 | 144 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Motorized compressor device with air bearing having reduced axial and radial stack-up6 Oct 2026US 12,753,707 B2Garrett Transportation I Inc.
- Integrated inflator/deflator air pump, mounting structure and inflatable product6 Oct 2026US 12,753,776 B2Jiangsu Guorun Electric Co., Ltd.
- 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
- Electric turbo compressor15 Sep 2026US 12,736,056 B2Kabushiki Kaisha Toyota Jidoshokki
- Adjustable impeller casing structure for centrifugal compressor8 Oct 2026US 2026/0309163 A1Harbin Engineering University
- Holder for a fan, fan unit comprising a holder and a fan, and use8 Oct 2026US 2026/0309166 A1ebm-papst Mulfingen GmbH & Co. KGaA & Co. KG
- Noise reduction air inlet bypass recirculation structure of compressor8 Oct 2026US 2026/0309167 A1Harbin Engineering University
- Multi-blade centrifugal air-sending device1 Oct 2026US 2026/0298258 A1Mitsubishi Electric Corporation
- Two-stage radial compressor with compensating bodies for compensating a change in length occurring upon a change in temperature1 Oct 2026US 2026/0298261 A1ebm-papst Mulfingen GmbH & Co. KGaA & Co. KG
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