F04D 17/00
Radial-flow pumps
Official title: Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps (F04D21/00 takes precedence)
F04D17/00 (Radial-flow pumps) appears on 3,579 US grants and 4,380 published applications in this corpus.
Search patents in F04D- Granted patents
- 3,579
- Published applications
- 4,380
- Assignees
- 1,209
- Inventors
- 7,138
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 12 | 0 |
| 1977 | 8 | 0 |
| 1978 | 13 | 0 |
| 1979 | 3 | 0 |
| 1980 | 8 | 0 |
| 1981 | 9 | 0 |
| 1982 | 3 | 0 |
| 1983 | 7 | 0 |
| 1984 | 5 | 0 |
| 1985 | 7 | 0 |
| 1986 | 5 | 0 |
| 1987 | 18 | 0 |
| 1988 | 8 | 0 |
| 1989 | 12 | 0 |
| 1990 | 17 | 0 |
| 1991 | 15 | 0 |
| 1992 | 12 | 0 |
| 1993 | 15 | 0 |
| 1994 | 22 | 0 |
| 1995 | 13 | 0 |
| 1996 | 16 | 0 |
| 1997 | 14 | 0 |
| 1998 | 22 | 0 |
| 1999 | 19 | 0 |
| 2000 | 30 | 0 |
| 2001 | 31 | 6 |
| 2002 | 35 | 31 |
| 2003 | 36 | 36 |
| 2004 | 30 | 31 |
| 2005 | 22 | 47 |
| 2006 | 29 | 43 |
| 2007 | 17 | 52 |
| 2008 | 23 | 37 |
| 2009 | 21 | 67 |
| 2010 | 21 | 70 |
| 2011 | 33 | 62 |
| 2012 | 60 | 103 |
| 2013 | 42 | 137 |
| 2014 | 74 | 183 |
| 2015 | 94 | 353 |
| 2016 | 131 | 302 |
| 2017 | 205 | 297 |
| 2018 | 231 | 282 |
| 2019 | 309 | 308 |
| 2020 | 295 | 284 |
| 2021 | 264 | 280 |
| 2022 | 300 | 317 |
| 2023 | 264 | 323 |
| 2024 | 293 | 280 |
| 2025 | 274 | 234 |
| 2026 | 132 | 215 |
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.
- Extraction impeller for axial compressor6 Oct 2026US 12,753,769 B2GE Vernova Infrastructure Technology LLC
- 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.
- 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