F04D 17/08
Centrifugal pumps
F04D17/08 (Centrifugal pumps) appears on 3,129 US grants and 3,851 published applications in this corpus.
Search patents in F04D- Granted patents
- 3,129
- Published applications
- 3,851
- Assignees
- 1,061
- Inventors
- 6,256
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 2 | 0 |
| 1978 | 10 | 0 |
| 1979 | 3 | 0 |
| 1980 | 8 | 0 |
| 1981 | 7 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 5 | 0 |
| 1987 | 12 | 0 |
| 1988 | 8 | 0 |
| 1989 | 9 | 0 |
| 1990 | 15 | 0 |
| 1991 | 11 | 0 |
| 1992 | 10 | 0 |
| 1993 | 11 | 0 |
| 1994 | 20 | 0 |
| 1995 | 10 | 0 |
| 1996 | 15 | 0 |
| 1997 | 8 | 0 |
| 1998 | 20 | 0 |
| 1999 | 12 | 0 |
| 2000 | 23 | 0 |
| 2001 | 25 | 5 |
| 2002 | 30 | 27 |
| 2003 | 29 | 27 |
| 2004 | 24 | 25 |
| 2005 | 15 | 32 |
| 2006 | 24 | 30 |
| 2007 | 12 | 38 |
| 2008 | 15 | 23 |
| 2009 | 15 | 57 |
| 2010 | 14 | 54 |
| 2011 | 27 | 57 |
| 2012 | 47 | 83 |
| 2013 | 36 | 105 |
| 2014 | 59 | 154 |
| 2015 | 82 | 325 |
| 2016 | 112 | 282 |
| 2017 | 183 | 272 |
| 2018 | 207 | 261 |
| 2019 | 282 | 288 |
| 2020 | 280 | 264 |
| 2021 | 247 | 247 |
| 2022 | 271 | 271 |
| 2023 | 239 | 287 |
| 2024 | 254 | 230 |
| 2025 | 241 | 211 |
| 2026 | 120 | 196 |
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.
- Liquid hydrogen pump impellor assembly6 Oct 2026US 12,753,770 B2ROLLS-ROYCE plc
- Impeller and centrifugal compressor6 Oct 2026US 12,753,772 B2Mitsubishi Heavy Industries Compressor Corporation
- Integrated inflator/deflator air pump, mounting structure and inflatable product6 Oct 2026US 12,753,776 B2Jiangsu Guorun Electric Co., Ltd.
- Mounting device for a fan unit6 Oct 2026US 12,753,777 B2Spectronik Pte. Ltd.
- Centrifugal air blower8 Oct 2026US 2026/0309159 A1Shinano Kenshi Co., Ltd.
- Adjustable impeller casing structure for centrifugal compressor8 Oct 2026US 2026/0309163 A1Harbin Engineering University
- Fan motor8 Oct 2026US 2026/0309164 A1LG Electronics Inc.
- 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
- Radial compressor with radial bearing and radial seal1 Oct 2026US 2026/0298255 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
- Medical ventilator268US 6,543,449 B1Respironics, Inc. · 2003
- Thermoelectric heat exchanger227US 6,119,463 AAmerigon Incorporated · 2000
- Thermoelectric heat exchanger196US 6,223,539 B1Amerigon Incorporated · 2001
- Viscous drag impeller components incorporated into pumps, turbines and transmissions164US 6,375,412 B12002